H3C S12500X-AF系列交换机 典型配置举例(R26xx系列)-6W100

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40-VRRP典型配置举例

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40-VRRP典型配置举例

H3C S12500X-AF产品VRRP配置举例

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

H3C_彩色.emf

 



1  简介

本文档介绍VRRP的配置举例。

2  配置前提

本文档不严格与具体软、硬件版本对应,如果使用过程中与产品实际情况有差异,请参考相关产品手册,或以设备实际情况为准。

本文档中的配置均是在实验室环境下进行的配置和验证,配置前设备的所有参数均采用出厂时的缺省配置。如果您已经对设备进行了配置,为了保证配置效果,请确认现有配置和以下举例中的配置不冲突。

本文档假设您已了解VRRP、STP和以太网链路聚合特性。

3  IPv4 VRRP单备份组配置举例

3.1  组网需求

图1所示,Host A所在网络的出口处部署了两台网关设备。现要求使用VRRP主备备份功能,将这两台设备组成一台虚拟路由器,作为Host A的缺省网关。具体应用需求如下:

·     在正常情况下,由Device A承担网关功能,转发Host A发送至外网的流量;

·     当Device A或者Device A的上行接口出现故障时,由Device B接替Device A承担网关功能;

·     当Device A或者Device A的上行接口故障恢复后,由Device A继续承担网关功能。

图1 IPv4 VRRP单备份组配置组网图

 

3.2  配置思路

·     为了让Device A成为Master,需要为Device A配置较高的优先级;

·     将VRRP组的抢占模式和监视上行接口状态功能结合使用,可以使Master设备根据上行接口的状态自动调整自身的VRRP优先级,从而使VRRP组内的角色发生转变,实现主备切换;

·     为了避免VRRP备份组中的角色频繁发生变化,可以配置一定的抢占延迟时间。

3.3  使用版本

本举例是在R2609版本上进行配置和验证的。

3.4  配置注意事项

·     备份组的虚拟IP地址不能为全零地址(0.0.0.0)、广播地址(255.255.255.255)、环回地址、非A/B/C类地址和其它非法IP地址(如0.0.0.1)。

·     IPv4 VRRP既可以使用VRRPv2版本,也可以使用VRRPv3版本(缺省情况使用VRRPv3)。请确保IPv4 VRRP备份组中的所有路由器上配置的IPv4 VRRP版本一致,否则备份组无法正常工作。

·     建议将备份组的虚拟IP地址和备份组中设备下行接口的IP地址配置为同一网段,否则可能导致局域网内的主机无法访问外部网络。

·     删除IP地址拥有者上的VRRP备份组,将导致地址冲突。建议先修改配置了备份组的接口的IP地址,再删除该接口上的VRRP备份组,以避免地址冲突。

·     对于同一个VRRP备份组的成员设备,必须保证虚拟路由器的IP地址配置完全一样。

·     用户在配置降低优先级幅度时,需要确保降低后的优先级比备份组内其他设备的优先级要低,确保备份组内有其他设备被选为Master。

3.5  配置步骤

(1)     Device A的配置

# 配置接口IP地址。

<DeviceA> system-view

[DeviceA] interface hundredgige 1/0/1

[DeviceA-HundredGigE1/0/1] undo shutdown

[DeviceA-HundredGigE1/0/1] quit

[DeviceA] vlan 2

[DeviceA-vlan2] port hundredgige 1/0/1

[DeviceA-vlan2] quit

[DeviceA] interface vlan-interface 2

[DeviceA-Vlan-interface2] undo shutdown

[DeviceA-Vlan-interface2] ip address 192.168.0.2 24

# 创建VRRP备份组1,并配置VRRP备份组1的虚拟IP地址为192.168.0.1。

[DeviceA-Vlan-interface2] vrrp vrid 1 virtual-ip 192.168.0.1

# 设置Device A在VRRP备份组1中的优先级为110,高于Device B的优先级100,以保证Device A成为Master负责转发流量。

[DeviceA-Vlan-interface2] vrrp vrid 1 priority 110

# 设置Device A工作在抢占方式,以保证Device A故障恢复后,能再次抢占成为Master,即只要Device A正常工作,就由Device A负责转发流量。为了避免频繁地进行状态切换,配置抢占延迟时间为500厘秒。

[DeviceA-Vlan-interface2] vrrp vrid 1 preempt-mode delay 500

[DeviceA-Vlan-interface2] quit

# 创建和上行端口HundredGigE1/0/2关联的Track项1。

[DeviceA] interface hundredgige 1/0/2

[DeviceA-HundredGigE1/0/2] undo shutdown

[DeviceA-HundredGigE1/0/2] quit

[DeviceA] track 1 interface hundredgige 1/0/2

# 配置监视Track项1,Track项的状态为Negative时,Device A在VRRP备份组中的优先级降低的数值为50。

[DeviceA] interface vlan-interface 2

[DeviceA-Vlan-interface2] vrrp vrid 1 track 1 priority reduced 50

[DeviceA-Vlan-interface2] quit

(2)     Device B的配置

# 配置接口IP地址。

<DeviceB> system-view

[DeviceB] interface hundredgige 1/0/1

[DeviceB-HundredGigE1/0/1] undo shutdown

[DeviceB-HundredGigE1/0/1] quit

[DeviceB] vlan 2

[DeviceB-vlan2] port ten-gigabitethernet 1/0/1

[DeviceB-vlan2] quit

[DeviceB] interface vlan-interface 2

[DeviceB-Vlan-interface2] undo shutdown

[DeviceB-Vlan-interface2] ip address 192.168.0.3 24

# 创建VRRP备份组1,并配置VRRP备份组1的虚拟IP地址为192.168.0.1。

[DeviceB-Vlan-interface2] vrrp vrid 1 virtual-ip 192.168.0.1

# 设置Device B在VRRP备份组1中的优先级为100。

[DeviceB-Vlan-interface2] vrrp vrid 1 priority 100

# 设置Device B工作在抢占方式,抢占延迟时间为500厘秒。

[DeviceB-Vlan-interface2] vrrp vrid 1 preempt-mode delay 500

[DeviceB-Vlan-interface2] quit

3.6  验证配置

# 配置完成后,在Host A上可以ping通Host B。

# 通过display vrrp verbose命令查看配置后的结果,显示Device A上VRRP备份组1的详细信息。

[DeviceA-Vlan-interface2] display vrrp verbose

IPv4 Virtual Router Information:

 Running Mode      : Standard

 Total number of virtual routers : 1

   Interface Vlan-interface2

     VRID           : 1                    Adver Timer  : 100

     Admin Status   : Up                   State        : Master

     Config Pri     : 110                  Running Pri  : 110

     Preempt Mode   : Yes                  Delay Time   : 500

     Auth Type      : None

     Virtual IP     : 192.168.0.1

     Virtual MAC    : 0000-5e00-0101

     Master IP      : 192.168.0.2

   VRRP Track Information:

     Track Object   : 1                   State : Positive   Pri Reduced : 50

# 通过display vrrp verbose命令查看配置后的结果,显示Device B上VRRP备份组1的详细信息。

[DeviceB-Vlan-interface2] display vrrp verbose

IPv4 Virtual Router Information:

 Running Mode      : Standard

 Total number of virtual routers : 1

   Interface Vlan-interface2

     VRID           : 1                    Adver Timer  : 100

     Admin Status   : Up                   State        : Backup

     Config Pri     : 100                  Running Pri  : 100

     Preempt Mode   : Yes                  Delay Time   : 500

     Become Master  : 401ms left

     Auth Type      : None

     Virtual IP     : 192.168.0.1

     Master IP      : 192.168.0.2

以上显示信息表示在VRRP备份组1中Device A为Master,Device B为Backup,Host A发送给Host B的报文通过Device A转发。

# Device A出现故障后,在Host A上仍然可以ping通Host B。

# 通过display vrrp verbose命令查看Device B上VRRP备份组的详细信息,Device A出现故障后,显示Device B上VRRP备份组1的详细信息。

[DeviceB-Vlan-interface2] display vrrp verbose

IPv4 Virtual Router Information:

 Running Mode      : Standard

 Total number of virtual routers : 1

   Interface Vlan-interface2

     VRID           : 1                    Adver Timer  : 100

     Admin Status   : Up                   State        : Master

     Config Pri     : 100                  Running Pri  : 100

     Preempt Mode   : Yes                  Delay Time   : 500

     Auth Type      : None

     Virtual IP     : 192.168.0.1

     Virtual MAC    : 0000-5e00-0101

     Master IP      : 192.168.0.3

以上显示信息表示Device A出现故障后,Device B成为Master,Host A发送给Host B的报文通过Device B转发。

# Device A故障恢复后,显示Device A上VRRP备份组1的详细信息。

[DeviceA-Vlan-interface2] display vrrp verbose

IPv4 Virtual Router Information:

 Running Mode      : Standard

 Total number of virtual routers : 1

   Interface Vlan-interface2

     VRID           : 1                    Adver Timer  : 100

     Admin Status   : Up                   State        : Master

     Config Pri     : 110                  Running Pri  : 110

     Preempt Mode   : Yes                  Delay Time   : 500

     Auth Type      : None

     Virtual IP     : 192.168.0.1

     Virtual MAC    : 0000-5e00-0101

     Master IP      : 192.168.0.2

   VRRP Track Information:

     Track Object   : 1                   State : Positive   Pri Reduced : 50

以上显示信息表示Device A故障恢复后,Device A会抢占成为Master,Host A发送给Host B的报文仍然通过Device A转发。

3.7  配置文件

·     Device A的配置文件:

#

vlan 2

#

interface Vlan-interface2

 ip address 192.168.0.1 255.255.255.0

 vrrp vrid 1 virtual-ip 192.168.0.2

 vrrp vrid 1 priority 110

 vrrp vrid 1 preempt-mode delay 500

 vrrp vrid 1 track 1 priority reduced 50

#

interface Vlan-interface3

#

interface HundredGigE1/0/1

 port link-mode bridge

 port access vlan 2

#

interface HundredGigE1/0/2

 port link-mode bridge

 port access vlan 3

#

 track 1 interface HundredGigE1/0/2

#

·     Device B的配置文件:

#

vlan 2

#

interface Vlan-interface2

 ip address 192.168.0.1 255.255.255.0

 vrrp vrid 1 virtual-ip 192.168.0.2

 vrrp vrid 1 priority 100

 vrrp vrid 1 preempt-mode delay 500

#

interface HundredGigE1/0/1

 port link-mode bridge

 port access vlan 2

#

4  IPv4 VRRP多备份组配置举例

4.1  组网需求

图2所示,某公司为了实现网关设备的冗余备份,以及内网主机流量的负载分担,在内部网络的出口处部署了两台设备,并使用VRRP负载分担功能,将这两台设备组成两台虚拟路由器,分别作为区域A和区域B的缺省网关。具体应用需求如下:

·     Device A是VRRP备份组1中的Master设备,Device B是VRRP备份组2中的Master设备。在正常情况下,区域A的用户通过Device A进行数据转发,区域B的用户通过Device B进行数据转发。

·     当Device A或者Device A的上行接口发生故障后,Device B能够迅速承担区域A内主机流量的转发任务;Device A故障恢复后,继续承担VRRP备份组1的网关功能;

·     当Device B或者Device B的上行接口故障发生故障后,Device A能够迅速承担区域B内主机流量的转发任务;Device B故障恢复后,继续承担VRRP备份组2的网关功能。

图2 IPv4 VRRP多备份组配置组网图

 

4.2  配置思路

·     为了让Device A和Device B分别成为VRRP备份组1和VRRP备份组2中的Master,需要在VRRP备份组1中为Device A配置较高的优先级,在VRRP备份组2中为Device B配置较高的优先级。

·     为了避免VRRP备份组中的角色频繁发生变化,可以配置一定的抢占延迟时间。

·     为了避免网关设备(Device A和Device B)与二层交换机形成二层环路,使用STP协议在每个VRRP备份组中阻塞一个端口。

4.3  使用版本

本举例是在R2609版本上进行配置和验证的。

4.4  配置注意事项

·     VRRP备份组的虚拟IP地址不能为全零地址(0.0.0.0)、广播地址(255.255.255.255)、环回地址、非A/B/C类地址和其它非法IP地址(如0.0.0.1)。

·     IPv4 VRRP既可以使用VRRPv2版本,也可以使用VRRPv3版本(缺省情况使用VRRPv3)。请确保IPv4 VRRP备份组中的所有路由器上配置的IPv4 VRRP版本一致,否则VRRP备份组无法正常工作。

·     建议将备份组的虚拟IP地址和备份组中设备下行接口的IP地址配置为同一网段,否则可能导致局域网内的主机无法访问外部网络。

·     删除IP地址拥有者上的VRRP备份组,将导致地址冲突。建议先修改配置了VRRP备份组的接口的IP地址,再删除该接口上的VRRP备份组,以避免地址冲突。

·     用户在配置降低优先级幅度时,需要确保降低后的优先级比VRRP备份组内其他设备的优先级要低,确保VRRP备份组内有其他设备被选为Master设备。

·     对于同一个VRRP备份组的成员设备,如下配置必须保证完全一样:

¡     虚拟路由器的IP地址个数

¡     每个备份组虚拟路由器的IP地址

¡     定时器间隔时间

4.5  配置步骤

(1)     Device A的配置

# 配置接口IP地址。

<DeviceA> system-view

[DeviceA] interface hundredgige 1/0/1

[DeviceA-HundredGigE1/0/1] undo shutdown

[DeviceA-HundredGigE1/0/1] quit

[DeviceA] vlan 101

[DeviceA-vlan101] port hundredgige 1/0/1

[DeviceA-vlan101] quit

[DeviceA] interface vlan-interface 101

[DeviceA-Vlan-interface101] undo shutdown

[DeviceA-Vlan-interface101] ip address 10.0.0.2 24

[DeviceA-Vlan-interface101] quit

# 请参考以上方法配置图2中其它接口的IP地址,配置步骤这里省略。

# 配置两个网关设备间采用Trunk口直连,允许VLAN 101和VLAN 102的报文通过

[DeviceA] interface hundredgige 1/0/24

[DeviceA-HundredGigE1/0/24] undo shutdown

[DeviceA-HundredGigE1/0/24] port link-type trunk

[DeviceA-HundredGigE1/0/24] undo port trunk permit vlan 1

[DeviceA-HundredGigE1/0/24] port trunk permit vlan 101 to 102

[DeviceA-HundredGigE1/0/24] port trunk pvid vlan 101

[DeviceA-HundredGigE1/0/24] quit

# 关闭HundredGigE1/0/2的STP功能

[DeviceA] interface hundredgige 1/0/2

[DeviceA-HundredGigE1/0/2] undo shutdown

[DeviceA-HundredGigE1/0/2] undo stp enable

[DeviceA-HundredGigE1/0/2] quit

# 创建VRRP备份组1,并配置VRRP备份组1的虚拟IP地址为10.0.0.1,并配置Device A在VRRP备份组1中的优先级为120,高于Device B的优先级。

[DeviceA] interface vlan-interface 101

[DeviceA-Vlan-interface101] vrrp vrid 1 virtual-ip 10.0.0.1

[DeviceA-Vlan-interface101] vrrp vrid 1 priority 120

[DeviceA-Vlan-interface101] quit

# 创建VRRP备份组2,并配置VRRP备份组2的虚拟IP地址为11.0.0.1。

[DeviceA] interface vlan-interface 102

[DeviceA-Vlan-interface102] undo shutdown

[DeviceA-Vlan-interface102] vrrp vrid 2 virtual-ip 11.0.0.1

[DeviceA-Vlan-interface102] quit

# 设置Device A工作在抢占方式,配置抢占延迟时间为500厘秒。

[DeviceA] interface vlan-interface 101

[DeviceA-Vlan-interface101] vrrp vrid 1 preempt-mode delay 500

[DeviceA-Vlan-interface101] quit

# 创建和上行端口HundredGigE1/0/2关联的Track项1。

[DeviceA] track 1 interface hundredgige 1/0/2

# 配置监视Track项1,Track项的状态为Negative时,Device A在VRRP备份组1中的优先级降低的数值为50。

[DeviceA] interface vlan-interface 101

[DeviceA-Vlan-interface101] vrrp vrid 1 track 1 priority reduced 50

[DeviceA-Vlan-interface101] quit

# 配置MSTP,将VLAN101映射到MSI 1,VLAN102映射到MSI 2,并将Device A作为MSI 1的根桥。

[DeviceA] stp region-configuration

[DeviceA-mst-region] region-name vrrp

[DeviceA-mst-region] instance 1 vlan 101

[DeviceA-mst-region] instance 2 vlan 102

[DeviceA-mst-region] active region-configuration

[DeviceA-mst-region] quit

[DeviceA] stp instance 1 root primary

[DeviceA] stp instance 2 root secondary

[DeviceA] stp global enable

(2)     Device B的配置

<DeviceB> system-view

[DeviceB] interface hundredgige 1/0/1

[DeviceB-HundredGigE1/0/1]undo shutdown

[DeviceB-HundredGigE1/0/1] quit

[DeviceB] vlan 101

[DeviceB-vlan101] port hundredgige 1/0/1

[DeviceB-vlan101] quit

[DeviceB] interface vlan-interface 101

[DeviceB-Vlan-interface101] undo shutdown

[DeviceB-Vlan-interface101] ip address 10.0.0.3 24

[DeviceB-Vlan-interface101] quit

# 请参考以上方法配置图2中其它接口的IP地址,配置步骤省略。

# 配置两个网关设备间采用trunk口直连,允许VLAN 101和VLAN 102的报文通过

[DeviceB] interface hundredgige 1/0/24

[DeviceB-HundredGigE1/0/24] undo shutdown

[DeviceB-HundredGigE1/0/24] port link-type trunk

[DeviceB-HundredGigE1/0/24] undo port trunk permit vlan 1

[DeviceB-HundredGigE1/0/24] port trunk permit vlan 101 to 102

[DeviceB-HundredGigE1/0/24] port trunk pvid vlan 101

[DeviceB-HundredGigE1/0/24] quit

# 关闭HundredGigE1/0/2的STP功能

[DeviceB] interface hundredgige 1/0/2

[DeviceB-HundredGigE1/0/2] undo shutdown

[DeviceB-HundredGigE1/0/2] undo stp enable

[DeviceB-HundredGigE1/0/2] quit

# 创建VRRP备份组1,并配置VRRP备份组1的虚拟IP地址为10.0.0.1。

[DeviceB] interface vlan-interface 101

[DeviceB-Vlan-interface101] vrrp vrid 1 virtual-ip 10.0.0.1

[DeviceB-Vlan-interface101] quit

# 创建VRRP备份组2,并配置VRRP备份组2的虚拟IP地址为11.0.0.1,并配置Device B在VRRP备份组2中的优先级为120,高于Device A的优先级。

[DeviceB] interface vlan-interface 102

[DeviceB-Vlan-interface102] undo shutdown

[DeviceB-Vlan-interface102] vrrp vrid 2 virtual-ip 11.0.0.1

[DeviceB-Vlan-interface102] vrrp vrid 2 priority 120

# 设置Device B工作在抢占方式,配置抢占延迟时间为500厘秒。

[DeviceB-Vlan-interface102] vrrp vrid 2 preempt-mode delay 500

[DeviceB-Vlan-interface102] quit

# 创建和上行端口HundredGigE1/0/2关联的Track项2。

[DeviceB] track 2 interface hundredgige 1/0/2

# 配置监视Track项2,Track项的状态为Negative时,Device B在VRRP备份组2中的优先级降低的数值为50。

[DeviceB] interface vlan-interface 102

[DeviceB-Vlan-interface102] vrrp vrid 2 track 2 priority reduced 50

[DeviceB-Vlan-interface102] quit

# 配置MSTP,将VLAN101映射到MSI 1,VLAN102映射到MSI 2,并将Device B作为MSI 2的根桥。

[DeviceB] stp region-configuration

[DeviceB-mst-region] region-name vrrp

[DeviceB-mst-region] instance 1 vlan 101

[DeviceB-mst-region] instance 2 vlan 102

[DeviceB-mst-region] active region-configuration

[DeviceB-mst-region] quit

[DeviceB] stp instance 2 root primary

[DeviceB] stp instance 1 root secondary

[DeviceB] stp global enable

(3)     L2SwitchA的配置

# 配置MSTP,将VLAN101映射到MSI 1,激活MSTI配置,全局使能STP协议。

<L2SwitchA> system-view

[L2SwitchA] stp region-configuration

[L2SwitchA-mst-region] region-name vrrp

[L2SwitchA-mst-region] instance 1 vlan 101

[L2SwitchA-mst-region] active region-configuration

[L2SwitchA-mst-region] quit

[L2SwitchA] stp global enable

(4)     L2SwitchB的配置

# 配置MSTP,将VLAN102映射到MSI 1,激活MSTI配置,全局使能STP协议。

<L2SwitchB> system-view

[L2SwitchB] stp region-configuration

[L2SwitchB-mst-region] region-name vrrp

[L2SwitchB-mst-region] instance 1 vlan 102

[L2SwitchB-mst-region] active region-configuration

[L2SwitchB-mst-region] quit

[L2SwitchB] stp global enable

4.6  验证配置

(1)     配置完成后,区域A和区域B中的主机都可以ping通外网。

# 检查区域A的主机到目的端100.0.0.1是否可达。

<host A> ping 100.0.0.1

PING 100.0.0.1 (100.0.0.1): 56 data bytes

56 bytes from 100.0.0.1: seq=0 ttl=128 time=22.43 ms

56 bytes from 100.0.0.1: seq=1 ttl=128 time=7.17 ms

56 bytes from 100.0.0.1: seq=2 ttl=128 time=8.91 ms

56 bytes from 100.0.0.1: seq=3 ttl=128 time=7.45 ms

56 bytes from 100.0.0.1: seq=4 ttl=128 time=9.11 ms

 

--- 100.0.0.1 ping statistics ---

5 packets transmitted, 5 packets received, 0% packet loss

round-trip min/avg/max = 7.17/11.01/22.43 ms

# 检查区域B的主机到目的端100.1.0.1是否可达。

<host C> ping 100.1.0.1

PING 100.1.0.1 (100.1.0.1): 56 data bytes

56 bytes from 100.1.0.1: seq=0 ttl=128 time=22.43 ms

56 bytes from 100.1.0.1: seq=1 ttl=128 time=7.17 ms

56 bytes from 100.1.0.1: seq=2 ttl=128 time=8.91 ms

56 bytes from 100.1.0.1: seq=3 ttl=128 time=7.45 ms

56 bytes from 100.1.0.1: seq=4 ttl=128 time=9.11 ms

 

--- 100.1.0.1 ping statistics ---

5 packets transmitted, 5 packets received, 0% packet loss

round-trip min/avg/max = 7.17/11.01/22.43 ms

(2)     通过display vrrp verbose命令查看配置后的结果。

# 查看Device A上全部IPv4 VRRP备份组的详细信息,显示Device A在备份组1中为Master设备,在备份组2中为Backup设备。

[DeviceA] display vrrp verbose

IPv4 Virtual Router Information:

 Running Mode       : Standard

 Total number of virtual routers : 2

   Interface Vlan-interface101

     VRID           : 1                    Adver Timer  : 100

     Admin Status   : Up                   State        : Master

     Config Pri     : 120                  Running Pri  : 120

     Preempt Mode   : Yes                  Delay Time   : 500

     Auth Type      : None

     Virtual IP     : 10.0.0.1

     Virtual MAC    : 0000-5e00-0101

     Master IP      : 10.0.0.2

   VRRP Track Information:                                                     

     Track Object   : 1                   State : Positive   Pri Reduced : 50  

 

   Interface Vlan-interface102

     VRID           : 2                    Adver Timer  : 100

     Admin Status   : Up                   State        : Backup

     Config Pri     : 100                  Running Pri  : 100

     Preempt Mode   : Yes                  Delay Time   : 0

     Auth Type      : None

     Virtual IP     : 11.0.0.1

     Master IP      : 11.0.0.3

# 查看Device B上全部IPv4 VRRP备份组的详细信息,显示Device B在备份组1中为Backup设备,在备份组2中为Master设备。

[DeviceB] display vrrp verbose

IPv4 Virtual Router Information:

 Running Mode       : Standard

 Total number of virtual routers : 2

   Interface Vlan-interface101

     VRID           : 1                    Adver Timer  : 100

     Admin Status   : Up                   State        : Backup

     Config Pri     : 100                  Running Pri  : 100

     Preempt Mode   : Yes                  Delay Time   : 0

     Auth Type      : None

     Virtual IP     : 10.0.0.1

     Master IP      : 10.0.0.2

 

   Interface Vlan-interface102

     VRID           : 2                    Adver Timer  : 100

     Admin Status   : Up                   State        : Master

     Config Pri     : 120                  Running Pri  : 120

     Preempt Mode   : Yes                  Delay Time   : 500

     Auth Type      : None

     Virtual IP     : 11.0.0.1

     Virtual MAC    : 0000-5e00-0102

     Master IP      : 11.0.0.3

   VRRP Track Information:                                                     

     Track Object   : 2                   State : Positive   Pri Reduced : 50  

# Device A出现故障后,通过display vrrp verbose命令查看Device B上备份组的详细信息。可以看到Device B抢占为备份组1的Master。

[DeviceB] display vrrp verbose

IPv4 Virtual Router Information:

 Running  Mode       : Standard

 Total number of virtual routers : 2

   Interface Vlan-interface101

     VRID           : 1                    Adver Timer  : 100

     Admin Status   : Up                   State        : Master

     Config Pri     : 100                  Running Pri  : 100

     Preempt Mode   : Yes                  Delay Time   : 0

     Auth Type      : None

     Virtual IP     : 10.0.0.1

     Virtual MAC    : 0000-5e00-0101

     Master IP      : 10.0.0.3

 

   Interface Vlan-interface102

     VRID           : 2                    Adver Timer  : 100

     Admin Status   : Up                   State        : Master

     Config Pri     : 120                  Running Pri  : 120

     Preempt Mode   : Yes                  Delay Time   : 500

     Auth Type      : None

     Virtual IP     : 11.0.0.1

     Virtual MAC    : 0000-5e00-0102

     Master IP      : 11.0.0.3

   VRRP Track Information:                                                      

     Track Object   : 2                   State : Positive   Pri Reduced : 50  

以上显示信息表示Device A出现故障后,区域A和区域B中的主机仍然可以ping通外网。

# 当Device A故障恢复后,显示Device A上备份组的详细信息。

[DeviceA] display vrrp verbose

IPv4 Virtual Router Information:

 Running Mode      : Standard

 Total number of virtual routers : 2

   Interface Vlan-interface101

     VRID           : 1                    Adver Timer  : 100

     Admin Status   : Up                   State        : Master

     Config Pri     : 120                  Running Pri  : 120

     Preempt Mode   : Yes                  Delay Time   : 500

     Auth Type      : None

     Virtual IP     : 10.0.0.1

     Virtual MAC    : 0000-5e00-0101

     Master IP      : 10.0.0.2

   VRRP Track Information:                                                     

     Track Object   : 1                   State : Positive   Pri Reduced : 50  

 

   Interface Vlan-interface102

     VRID           : 2                    Adver Timer  : 100

     Admin Status   : Up                   State        : Backup

     Config Pri     : 100                  Running Pri  : 100

     Preempt Mode   : Yes                  Delay Time   : 0

     Become Master  : 3550ms left

     Auth Type      : None

     Virtual IP     : 11.0.0.1

     Master IP      : 11.0.0.3

以上显示信息表示当Device A故障恢复后,Device A在VRRP备份组1中恢复为原来的优先级并抢占成为该备份组的Master,VLAN 101内的主机通过Device A与外界通信。

4.7  配置文件

·     Device A的配置文件:

#

vlan 101 to 102

#

vlan 4094

#

stp region-configuration

 region-name vrrp

 instance 1 vlan 101

 instance 2 vlan 102

 active region-configuration

#

 stp instance 1 root primary

 stp global enable

#

interface Vlan-interface101

 ip address 10.0.0.2 255.255.255.0

 vrrp vrid 1 virtual-ip 10.0.0.1

 vrrp vrid 1 priority 120

vrrp vrid 1 preempt-mode delay 500

 vrrp vrid 1 track 1 priority reduced 50

#

interface Vlan-interface102

 ip address 11.0.0.2 255.255.255.0

 vrrp vrid 2 virtual-ip 11.0.0.1

#

interface Vlan-interface4094

 ip address 100.0.0.2 255.255.255.0

#

interface HundredGigE1/0/1

 port link-mode bridge

 port access vlan 101

#

interface HundredGigE1/0/2

 port link-mode bridge

 port access vlan 4094

 undo stp enable

#

interface HundredGigE1/0/3

 port link-mode bridge

 port access vlan 102

#

interface HundredGigE1/0/24

port link-mode bridge

 port link-type trunk

 undo port trunk permit vlan 1

 port trunk permit vlan 101 to 102

 port trunk pvid vlan 101

#

 track 1 interface HundredGigE1/0/2

#

·     Device B的配置文件:

#

vlan 101 to 102

#

vlan 4094

#

stp region-configuration

 region-name vrrp

 instance 1 vlan 101

 instance 2 vlan 102

 active region-configuration

#

stp instance 2 root primary

 stp global enable

#

interface Vlan-interface101

 ip address 10.0.0.3 255.255.255.0

 vrrp vrid 1 virtual-ip 10.0.0.1

#

interface Vlan-interface102

 ip address 11.0.0.3 255.255.255.0

 vrrp vrid 2 virtual-ip 11.0.0.1

 vrrp vrid 2 priority 120

vrrp vrid 1 preempt-mode delay 500

 vrrp vrid 2 track 2 priority reduced 50

#

interface Vlan-interface4094

 ip address 100.1.0.2 255.255.255.0

#

interface HundredGigE1/0/1

 port link-mode bridge

 port access vlan 101

#

interface HundredGigE1/0/2

 port link-mode bridge

 port access vlan 4094

 undo stp enable

#

interface HundredGigE1/0/3

 port link-mode bridge

 port access vlan 102

#

interface HundredGigE1/0/24

 port link-mode bridge

 port link-type trunk

 undo port trunk permit vlan 1

 port trunk permit vlan 101 to 102

 port trunk pvid vlan 101

#

 track 2 interface HundredGigE1/0/2

#

5  IPv4 VRRP负载均衡模式配置举例

5.1  组网需求

图3所示,Host A、Host B和Host C所在网络的出口处部署了三台设备。现要求使用VRRP负载均衡功能,将Device A、Device B和Device C组成一台虚拟路由器,作为局域网内主机的缺省网关。具体应用需求如下:

·     实现VRRP备份组中三台设备都可以转发报文,实现流量负载分担,充分利用网关资源;

·     当Device A、Device B或Device C自身或其上行接口出现故障时,Host A、Host B和Host C可以通过其他正常运行的设备继续通信,避免通信中断;当Device A、Device B或Device C故障恢复后,继续承担网关功能。

图3 IPv4 VRRP负载均衡模式配置组网图

 

5.2  配置思路

·     为了使Device A优先与Device B和Device C被选举为VRRP备份组的Master设备,需要为其配置高于Device B和Device C的优先级;为了使Device B优先于Device C被选举为VRRP备份组的Master设备,需要为其配置高于Device C的优先级;

·     为了避免由于故障造成VRRP备份组中的角色频繁发生变化,可以配置一定的抢占延迟时间;

·     在Device A、Device B和Device C上配置虚拟转发器通过Track项监视上行接口的状态。当上行接口出现故障时,降低该接口所在设备虚拟转发器的权重,以便其他设备接管该设备的转发任务,避免通信中断;

·     为了保证原Master设备故障恢复后,能再次抢占成为Master,需要配置VRRP备份组工作在抢占模式。

5.3  使用版本

本举例是在R2609版本上进行配置和验证的。

5.4  配置注意事项

·     建议将备份组的虚拟IP地址和备份组中设备下行接口的IP地址配置为同一网段,否则可能导致局域网内的主机无法访问外部网络。

·     VRRP备份组的虚拟IP地址不能为全零地址(0.0.0.0)、广播地址(255.255.255.255)、环回地址、非A/B/C类地址和其它非法IP地址(如0.0.0.1)。

·     IPv4 VRRP既可以使用VRRPv2版本,也可以使用VRRPv3版本(缺省情况使用VRRPv3)。请确保IPv4 VRRP备份组中的所有路由器上配置的IPv4 VRRP版本一致,否则VRRP备份组无法正常工作。

·     VRRP工作在负载均衡模式时,备份组的虚拟IP地址和接口的IP地址不能相同,否则VRRP负载均衡功能将无法正常工作。

·     当监视的上行链路出现故障时,配置的权重降低数额需保证VF Owner的权重低于失效下限,即权重降低的数额大于245,其它的虚拟转发器才能接替VF Owner成为AVF。

·     对于同一个VRRP备份组的成员设备,必须保证备份组虚拟路由器的IP地址配置完全一样。

·     用户在配置降低权重幅度时,需要确保降低后的优先级比VRRP备份组内其他设备的优先级要低,确保VRRP备份组内有其他设备被选为Master。

5.5  配置步骤

5.5.1  Device A的配置

(1)     配置接口

# 配置接口。

<DeviceA> system-view

[DeviceA] interface hundredgige 1/0/1

[DeviceA-HundredGigE1/0/1] undo shutdown

[DeviceA-HundredGigE1/0/1] quit

[DeviceA] vlan 2

[DeviceA-vlan2] port hundredgige 1/0/1

[DeviceA-vlan2] quit

[DeviceA] interface vlan-interface 2

[DeviceA-Vlan-interface2] undo shutdown

[DeviceA-Vlan-interface2] ip address 10.1.1.2 24

[DeviceA-Vlan-interface2] quit

[DeviceA] interface hundredgige 1/0/2

[DeviceA-HundredGigE1/0/2] undo shutdown

[DeviceA-HundredGigE1/0/2] quit

[DeviceA] vlan 3

[DeviceA-vlan3] port hundredgige 1/0/2

[DeviceA-vlan3] quit

[DeviceA] interface vlan-interface 3

[DeviceA-Vlan-interface3] undo shutdown

[DeviceA-Vlan-interface3] quit

(2)     配置VRRP

# 配置VRRP工作在负载均衡模式。

[DeviceA] vrrp mode load-balance

# 创建VRRP备份组1,并配置VRRP备份组1的虚拟IP地址为10.1.1.1。

[DeviceA] interface vlan-interface 2

[DeviceA-Vlan-interface2] vrrp vrid 1 virtual-ip 10.1.1.1

# 配置Device A在VRRP备份组1中的优先级为120,高于Device B的优先级110和Device C的优先级100,以保证Device A成为Master。

[DeviceA-Vlan-interface2] vrrp vrid 1 priority 120

# 配置Device A工作在抢占方式,以保证Device A故障恢复后,能再次抢占成为Master,即只要Device A正常工作,Device A就会成为Master。为了避免频繁地进行状态切换,配置抢占延迟时间为500厘秒。

[DeviceA-Vlan-interface2] vrrp vrid 1 preempt-mode delay 500

[DeviceA-Vlan-interface2] quit

(3)     配置Track

# 创建和Ten-GigabitEthernet1/0/2关联的Track项1。如果Track项的状态为Negative,则说明Device A的上行接口出现故障。

[DeviceA] track 1 interface hundredgige 1/0/2

# 配置虚拟转发器监视Track项1。Track项的状态为Negative时,降低Device A上虚拟转发器的权重,使其低于失效下限10,即权重降低的数额大于245,以便其他设备接替Device A的转发任务。本例中,配置虚拟转发器权重降低数额为250。

[DeviceA] interface vlan-interface 2

[DeviceA-Vlan-interface2] vrrp vrid 1 track 1 weight reduced 250

[DeviceA-Vlan-interface2] quit

5.5.2   Device B的配置

(1)     配置接口

# 配置接口。

<DeviceB> system-view

[DeviceB] interface hundredgige 1/0/1

[DeviceB-HundredGigE1/0/1] undo shutdown

[DeviceB-HundredGigE1/0/1] quit

[DeviceB] vlan 2

[DeviceB-vlan2] port hundredgige 1/0/1

[DeviceB-vlan2] quit

[DeviceB] interface vlan-interface 2

[DeviceB-Vlan-interface2] undo shutdown

[DeviceB-Vlan-interface2] ip address 10.1.1.3 24

[DeviceB-Vlan-interface2] quit

[DeviceB] interface hundredgige 1/0/2

[DeviceB-HundredGigE1/0/2] undo shutdown

[DeviceB-HundredGigE1/0/2] quit

[DeviceB] vlan 3

[DeviceB-vlan3] port hundredgige 1/0/2

[DeviceB-vlan3] quit

[DeviceB] interface vlan-interface 3

[DeviceB-Vlan-interface3] undo shutdown

[DeviceB-Vlan-interface3] quit

(2)     配置VRRP

# 配置VRRP工作在负载均衡模式。

[DeviceB] vrrp mode load-balance

# 创建VRRP备份组1,并配置VRRP备份组1的虚拟IP地址为10.1.1.1。

[DeviceB] interface vlan-interface 2

[DeviceB-Vlan-interface2] vrrp vrid 1 virtual-ip 10.1.1.1

# 配置Device B在VRRP备份组1中的优先级为110,高于Device C的优先级,以保证Device A出现故障时,Device B成为Master。

[DeviceB-Vlan-interface2] vrrp vrid 1 priority 110

# 配置Device B工作在抢占方式,抢占延迟时间为500厘秒。

[DeviceB-Vlan-interface2] vrrp vrid 1 preempt-mode delay 500

[DeviceB-Vlan-interface2] quit

(3)     配置Track

# 创建和HundredGigE1/0/2关联的Track项1。如果Track项的状态为Negative,则说明Device B的上行接口出现故障。

[DeviceB] track 1 interface hundredgige 1/0/2

# 配置虚拟转发器监视Track项1。Track项的状态为Negative时,降低Device B上虚拟转发器的权重,使其低于失效下限10,即权重降低的数额大于245,以便其他设备接替Device B的转发任务。本例中,配置虚拟转发器权重降低数额为250。

[DeviceB] interface vlan-interface 2

[DeviceB-Vlan-interface2] vrrp vrid 1 track 1 weight reduced 250

[DeviceB-Vlan-interface2] quit

5.5.3  Device C的配置

(1)     配置接口

# 配置接口。

<DeviceC> system-view

[DeviceC] interface hundredgige 1/0/1

[DeviceC-HundredGigE1/0/1] undo shutdown

[DeviceC-HundredGigE1/0/1] quit

[DeviceC] vlan 2

[DeviceC-vlan2] port hundredgige 1/0/1

[DeviceC-vlan2] quit

[DeviceC] interface vlan-interface 2

[DeviceC-Vlan-interface2] undo shutdown

[DeviceC-Vlan-interface2] ip address 10.1.1.4 24

[DeviceC-Vlan-interface2] quit

[DeviceC] interface hundredgige 1/0/2

[DeviceC-HundredGigE1/0/2] undo shutdown

[DeviceC-HundredGigE1/0/2] quit

[DeviceC] vlan 3

[DeviceC-vlan3] port hundredgige 1/0/2

[DeviceC-vlan3] quit

[DeviceC] interface vlan-interface 3

[DeviceC-Vlan-interface3] undo shutdown

[DeviceC-Vlan-interface3] quit

(2)     配置VRRP

# 配置VRRP工作在负载均衡模式。

[DeviceA] vrrp mode load-balance

# 创建VRRP备份组1,并配置VRRP备份组1的虚拟IP地址为10.1.1.1。

[DeviceC] interface vlan-interface 2

[DeviceC-Vlan-interface2] vrrp vrid 1 virtual-ip 10.1.1.1

# 配置Device C工作在抢占方式,抢占延迟时间为500厘秒。

[DeviceC-Vlan-interface2] vrrp vrid 1 preempt-mode delay 500

[DeviceC-Vlan-interface2] quit

(3)     配置Track

# 创建和HundredGigE1/0/2关联的Track项1。如果Track项的状态为Negative,则说明Device C的上行接口出现故障。

[DeviceC] track 1 interface hundredgige 1/0/2

# 配置虚拟转发器监视Track项1。Track项的状态为Negative时,降低Device C上虚拟转发器的权重,使其低于失效下限10,即权重降低的数额大于245,以便其他设备接替Device C的转发任务。本例中,配置虚拟转发器权重降低数额为250。

[DeviceC] interface vlan-interface 2

[DeviceC-Vlan-interface2] vrrp vrid 1 track 1 weight reduced 250

[DeviceC-Vlan-interface2] quit

5.5.4  验证配置

(1)     配置完成后,在Host A上可以ping通外网,通过display vrrp verbose命令查看配置后的结果

# 显示Device A上VRRP备份组的详细信息。

[DeviceA] display vrrp verbose

IPv4 Virtual Device Information:

 Running Mode      : Load Balance

 Total number of virtual routers : 1

   Interface Vlan-interface2

     VRID           : 1                    Adver Timer  : 100

     Admin Status   : Up                   State        : Master

     Config Pri     : 120                  Running Pri  : 120

     Preempt Mode   : Yes                  Delay Time   : 500

     Auth Type      : None

     Virtual IP     : 10.1.1.1

     Member IP List : 10.1.1.2 (Local, Master)

                      10.1.1.3 (Backup)

                      10.1.1.4 (Backup)

   Forwarder Information: 3 Forwarders 1 Active

     Config Weight  : 255

     Running Weight : 255

    Forwarder 01

     State          : Active

     Virtual MAC    : 000f-e2ff-0011 (Owner)

     Owner ID       : 0000-5e01-1101

     Priority       : 255

     Active         : local

    Forwarder 02

     State          : Listening

     Virtual MAC    : 000f-e2ff-0012 (Learnt)

     Owner ID       : 0000-5e01-1103

     Priority       : 127

     Active         : 10.1.1.3

    Forwarder 03

     State          : Listening

     Virtual MAC    : 000f-e2ff-0013 (Learnt)

     Owner ID       : 0000-5e01-1105

     Priority       : 127

     Active         : 10.1.1.4

   Forwarder Weight Track Information:

     Track Object   : 1          State : Positive   Weight Reduced : 250

# 显示Device B上VRRP备份组的详细信息。

[DeviceB] display vrrp verbose

IPv4 Virtual Device Information:

 Running Mode      : Load Balance

 Total number of virtual routers : 1

   Interface Vlan-interface2

     VRID           : 1                    Adver Timer  : 100

     Admin Status   : Up                   State        : Backup

     Config Pri     : 110                  Running Pri  : 110

     Preempt Mode   : Yes                  Delay Time   : 500

     Auth Type      : None

     Virtual IP     : 10.1.1.1

     Member IP List : 10.1.1.3 (Local, Backup)

                      10.1.1.2 (Master)

                      10.1.1.4 (Backup)

   Forwarder Information: 3 Forwarders 1 Active

     Config Weight  : 255

     Running Weight : 255

    Forwarder 01

     State          : Listening

     Virtual MAC    : 000f-e2ff-0011 (Learnt)

     Owner ID       : 0000-5e01-1101

     Priority       : 127

     Active         : 10.1.1.2

    Forwarder 02

     State          : Active

     Virtual MAC    : 000f-e2ff-0012 (Owner)

     Owner ID       : 0000-5e01-1103

     Priority       : 255

     Active         : local

    Forwarder 03

     State          : Listening

     Virtual MAC    : 000f-e2ff-0013 (Learnt)

     Owner ID       : 0000-5e01-1105

     Priority       : 127

     Active         : 10.1.1.4

   Forwarder Weight Track Information:

     Track Object   : 1          State : Positive   Weight Reduced : 250

# 显示Device C上VRRP备份组的详细信息。

[DeviceC] display vrrp verbose

IPv4 Virtual Device Information:

 Running Mode      : Load Balance

 Total number of virtual routers : 1

   Interface Vlan-interface2

     VRID           : 1                    Adver Timer  : 100

     Admin Status   : Up                   State        : Backup

     Config Pri     : 100                  Running Pri  : 100

     Preempt Mode   : Yes                  Delay Time   : 500

     Auth Type      : None

     Virtual IP     : 10.1.1.1

     Member IP List : 10.1.1.4 (Local, Backup)

                      10.1.1.2 (Master)

                      10.1.1.3 (Backup)

   Forwarder Information: 3 Forwarders 1 Active

     Config Weight  : 255

     Running Weight : 255

    Forwarder 01

     State          : Listening

     Virtual MAC    : 000f-e2ff-0011 (Learnt)

     Owner ID       : 0000-5e01-1101

     Priority       : 127

     Active         : 10.1.1.2

    Forwarder 02

     State          : Listening

     Virtual MAC    : 000f-e2ff-0012 (Learnt)

     Owner ID       : 0000-5e01-1103

     Priority       : 127

     Active         : 10.1.1.3

    Forwarder 03

     State          : Active

     Virtual MAC    : 000f-e2ff-0013 (Owner)

     Owner ID       : 0000-5e01-1105

     Priority       : 255

     Active         : local

   Forwarder Weight Track Information:

     Track Object   : 1          State : Positive   Weight Reduced : 250

以上显示信息表示在VRRP备份组1中Device A为Master,Device B和Device C 为Backup。Device A、Device B和Device C上各自存在一个AVF,并存在作为备份的两个LVF。

(2)     Device A的上行接口(VLAN接口3)出现故障后

# 显示Device A上VRRP备份组的详细信息。

[DeviceA] display vrrp verbose

IPv4 Virtual Device Information:

 Running Mode      : Load Balance

 Total number of virtual routers : 1

   Interface Vlan-interface2

     VRID           : 1                    Adver Timer  : 100

     Admin Status   : Up                   State        : Master

     Config Pri     : 120                  Running Pri  : 120

     Preempt Mode   : Yes                  Delay Time   : 500

     Auth Type      : None

     Virtual IP     : 10.1.1.1

     Member IP List : 10.1.1.2 (Local, Master)

                      10.1.1.3 (Backup)

                      10.1.1.4 (Backup)

   Forwarder Information: 3 Forwarders 0 Active

     Config Weight  : 255

     Running Weight : 5

    Forwarder 01

     State          : Initialize

     Virtual MAC    : 000f-e2ff-0011 (Owner)

     Owner ID       : 0000-5e01-1101

     Priority       : 0

     Active         : 10.1.1.4

    Forwarder 02

     State          : Initialize

     Virtual MAC    : 000f-e2ff-0012 (Learnt)

     Owner ID       : 0000-5e01-1103

     Priority       : 0

     Active         : 10.1.1.3

    Forwarder 03

     State          : Initialize

     Virtual MAC    : 000f-e2ff-0013 (Learnt)

     Owner ID       : 0000-5e01-1105

     Priority       : 0

     Active         : 10.1.1.4

   Forwarder Weight Track Information:

     Track Object   : 1          State : Negative   Weight Reduced : 250

# 显示Device C上VRRP备份组的详细信息。

[DeviceC] display vrrp verbose

IPv4 Virtual Device Information:

 Running Mode      : Load Balance

 Total number of virtual routers : 1

   Interface Vlan-interface2

     VRID           : 1                    Adver Timer  : 100

     Admin Status   : Up                   State        : Backup

     Config Pri     : 100                  Running Pri  : 100

     Preempt Mode   : Yes                  Delay Time   : 500

     Auth Type      : None

     Become Master  : 3550ms left

     Virtual IP     : 10.1.1.1

     Member IP List : 10.1.1.4 (Local, Backup)

                      10.1.1.2 (Master)

                      10.1.1.3 (Backup)

   Forwarder Information: 3 Forwarders 2 Active

     Config Weight  : 255

     Running Weight : 255

    Forwarder 01

     State          : Active

     Virtual MAC    : 000f-e2ff-0011 (Take Over)

     Owner ID       : 0000-5e01-1101

     Priority       : 85

     Active         : local

     Redirect Time  : 93 secs

     Time-out Time  : 1293 secs

    Forwarder 02

     State          : Listening

     Virtual MAC    : 000f-e2ff-0012 (Learnt)

     Owner ID       : 0000-5e01-1103

     Priority       : 85

     Active         : 10.1.1.3

    Forwarder 03

     State          : Active

     Virtual MAC    : 000f-e2ff-0013 (Owner)

     Owner ID       : 0000-5e01-1105

     Priority       : 255

     Active         : local

   Forwarder Weight Track Information:

     Track Object   : 1          State : Positive   Weight Reduced : 250

以上显示信息表示Device A的上行接口出现故障后,Device A上虚拟转发器的权重降低为5,低于失效下限。Device A上所有虚拟转发器的状态均变为Initialized,不能再用于转发。Device C成为虚拟MAC地址000f-e2ff-0011对应虚拟转发器的AVF,接管Device A的转发任务。

# Timeout Timer超时后(约1800秒后),查看Device C上VRRP备份组的详细信息。

[DeviceC] display vrrp verbose

IPv4 Virtual Device Information:

 Running Mode      : Load Balance

 Total number of virtual routers : 1

   Interface Vlan-interface2

     VRID           : 1                    Adver Timer  : 100

     Admin Status   : Up                   State        : Backup

     Config Pri     : 100                  Running Pri  : 100

     Preempt Mode   : Yes                  Delay Time   : 500

     Auth Type      : None

     Become Master  : 3550ms left

     Virtual IP     : 10.1.1.1

     Member IP List : 10.1.1.4 (Local, Backup)

                      10.1.1.2 (Master)

                      10.1.1.3 (Backup)

   Forwarder Information: 2 Forwarders 1 Active

     Config Weight  : 255

     Running Weight : 255

    Forwarder 02

     State          : Listening

     Virtual MAC    : 000f-e2ff-0012 (Learnt)

     Owner ID       : 0000-5e01-1103

     Priority       : 127

     Active         : 10.1.1.3

    Forwarder 03

     State          : Active

     Virtual MAC    : 000f-e2ff-0013 (Owner)

     Owner ID       : 0000-5e01-1105

     Priority       : 255

     Active         : local

   Forwarder Weight Track Information:

     Track Object   : 1          State : Positive   Weight Reduced : 250

以上显示信息表示,Timeout Timer超时后,删除虚拟MAC地址000f-e2ff-0011对应的虚拟转发器,不再转发目的MAC地址为该MAC的报文。

(3)     Device A出现故障后

# 显示Device B上VRRP备份组的详细信息。

[DeviceB] display vrrp verbose

 IPv4 Standby Information:

     Run Mode       : Load Balance

     Run Method     : Virtual MAC

 Total number of virtual routers : 1

   Interface Vlan-interface2

     VRID           : 1                    Adver Timer  : 1

     Admin Status   : Up                   State        : Master

     Config Pri     : 110                  Running Pri  : 110

     Preempt Mode   : Yes                  Delay Time   : 500

     Auth Type      : None

     Virtual IP     : 10.1.1.1

     Member IP List : 10.1.1.3 (Local, Master)

                      10.1.1.4 (Backup)

   Forwarder Information: 2 Forwarders 1 Active

     Config Weight  : 255

     Running Weight : 255

    Forwarder 02

     State          : Active

     Virtual MAC    : 000f-e2ff-0012 (Owner)

     Owner ID       : 0000-5e01-1103

     Priority       : 255

     Active         : local

    Forwarder 03

     State          : Listening

     Virtual MAC    : 000f-e2ff-0013 (Learnt)

     Owner ID       : 0000-5e01-1105

     Priority       : 127

     Active         : 10.1.1.4

   Forwarder Weight Track Information:

     Track Object   : 1          State : Positive   Weight Reduced : 250

以上显示信息表示Device A出现故障后,Device B的优先级高于Device C,将抢占成为Master。

5.5.5  配置文件

·     Device A的配置文件:

#

 vrrp mode load-balance

#

 vlan 2 to 3

#

interface Vlan-interface2

 ip address 10.1.1.2 255.255.255.0

 vrrp vrid 1 virtual-ip 10.1.1.1

 vrrp vrid 1 priority 120

 vrrp vrid 1 preempt-mode delay 500

 vrrp vrid 1 track 1 weight reduced 250

#

interface Vlan-interface3

#

interface HundredGigE1/0/1

 port link-mode bridge

 port access vlan 2

#

interface HundredGigE1/0/2

 port link-mode bridge

 port access vlan 3

#

track 1 interface HundredGigE1/0/2

#

·     Device B的配置文件:

#

 vrrp mode load-balance

#

 vlan 2 to 3

#

interface Vlan-interface2

 ip address 10.1.1.3 255.255.255.0

 vrrp vrid 1 virtual-ip 10.1.1.1

 vrrp vrid 1 priority 110

 vrrp vrid 1 preempt-mode delay 500

 vrrp vrid 1 track 1 weight reduced 250

#

interface Vlan-interface3

#

interface HundredGigE1/0/1

 port link-mode bridge

 port access vlan 2

#

interface HundredGigE1/0/2

 port link-mode bridge

 port access vlan 3

#

track 1 interface HundredGigE1/0/2

#

·     Device C的配置文件:

#

 vrrp mode load-balance

#

 vlan 2 to 3

#

interface Vlan-interface2

 ip address 10.1.1.4 255.255.255.0

 vrrp vrid 1 virtual-ip 10.1.1.1

 vrrp vrid 1 preempt-mode delay 500

 vrrp vrid 1 track 1 weight reduced 250

#

interface Vlan-interface3

#

interface HundredGigE1/0/1

 port link-mode bridge

 port access vlan 2

#

interface HundredGigE1/0/2

 port link-mode bridge

 port access vlan 3

#

track 1 interface HundredGigE1/0/2

#

6  IPv6 VRRP单备份组配置举例

6.1  组网需求

图4所示,Area A区域的用户(Host A和Host B)所在网络的出口处部署了两台网关设备。现要求使用VRRP主备备份功能,将这两台设备组成一台虚拟路由器,作为Area A区域用户的缺省网关。具体应用需求如下:

·     在正常情况下,由Device A承担网关功能,转发Area A区域用户发送至外网的流量;

·     当Device A或者Device A的上行接口出现故障时,由Device B接替Device A承担网关功能;

·     当Device A或者Device A的上行接口故障恢复后,由Device A继续承担网关功能。

图4 IPv6 VRRP单备份组配置组网图

 

6.2  配置思路

·     为了让Device A成为Master,需要为Device A配置较高的优先级;

·     将VRRP组的抢占模式和监视上行接口状态功能结合使用,可以使Master设备根据上行接口的状态自动调整自身的VRRP优先级,从而使VRRP组内的角色发生转变,实现主备切换;

·     为了避免VRRP备份组中的角色频繁发生变化,可以配置一定的抢占延迟时间。

·     为了避免网关设备(Device A和Device B)与二层交换机形成二层环路,使用STP协议在VRRP备份组中阻塞一个端口。

6.3  使用版本

本举例是在R2609版本上进行配置和验证的。

6.4  配置注意事项

·     建议将备份组的虚拟IPv6地址和备份组中设备下行接口的IPv6地址配置为同一网段,否则可能导致局域网内的主机无法访问外部网络。

·     IPv6 VRRP既可以使用VRRPv2版本,也可以使用VRRPv3版本(缺省情况使用VRRPv3)。请确保IPv6 VRRP备份组中的所有路由器上配置的IPv6 VRRP版本一致,否则备份组无法正常工作。

·     删除IP地址拥有者上的VRRP备份组,将导致地址冲突。建议先修改配置了备份组的接口的IP地址,再删除该接口上的VRRP备份组,以避免地址冲突。

·     对于同一个VRRP备份组的成员设备,必须保证虚拟路由器的IP地址配置完全一样。

·     用户在配置降低优先级幅度时,需要确保降低后的优先级比备份组内其他设备的优先级要低,确保备份组内有其他设备被选为Master。

6.5  配置步骤

(1)     Device A的配置

# 配置接口IPv6地址。

<DeviceA> system-view

[DeviceA] interface hundredgige 1/0/1

[DeviceA-HundredGigE1/0/1] undo shutdown

[DeviceA-HundredGigE1/0/1] quit

[DeviceA] vlan 2

[DeviceA-vlan2] port hundredgige 1/0/1

[DeviceA-vlan2] quit

[DeviceA] interface vlan-interface 2

[DeviceA-Vlan-interface2] undo shutdown

[DeviceA-Vlan-interface2] ipv6 address fe80::1 link-local

[DeviceA-Vlan-interface2] ipv6 address 1::1 64

# 创建VRRP备份组1,并配置备份组1的虚拟IPv6地址为FE80::10和1::10。

[DeviceA-Vlan-interface2] vrrp ipv6 vrid 1 virtual-ip fe80::10 link-local

[DeviceA-Vlan-interface2] vrrp ipv6 vrid 1 virtual-ip 1::10

# 配置允许发布RA消息,以便Area A的主机通过RA消息学习到缺省网关地址。

[DeviceA-Vlan-interface2] undo ipv6 nd ra halt

# 设置Device A在VRRP备份组1中的优先级为110,高于Device B的优先级100,以保证Device A成为Master负责转发流量。

[DeviceA-Vlan-interface2] vrrp ipv6 vrid 1 priority 110

# 设置Device A工作在抢占方式,以保证Device A故障恢复后,能再次抢占成为Master,即只要Device A正常工作,就由Device A负责转发流量。为了避免频繁地进行状态切换,配置抢占延迟时间为500厘秒。

[DeviceA-Vlan-interface2] vrrp ipv6 vrid 1 preempt-mode delay 500

[DeviceA-Vlan-interface2] quit

# 创建和上行接口Ten-GigabitEthernet1/0/3关联的Track项1。

[DeviceA] interface hundredgige 1/0/3

[DeviceA-HundredGigE1/0/3] undo shutdown

[DeviceA-HundredGigE1/0/3] quit

[DeviceA] track 1 interface hundredgige 1/0/3

# 配置监视Track项1,Track项的状态为Negative时,Device A在VRRP备份组中的优先级降低的数值为50。

[DeviceA] interface vlan-interface 2

[DeviceA-Vlan-interface2] vrrp ipv6 vrid 1 track 1 priority reduced 50

[DeviceA-Vlan-interface2] quit

# 配置两个网关设备间采用Trunk口直连,允许VLAN 2的报文通过

[DeviceA] interface hundredgige 1/0/2

[DeviceA-HundredGigE1/0/2] undo shutdown

[DeviceA-HundredGigE1/0/2] port link-type trunk

[DeviceA-HundredGigE1/0/2] undo port trunk permit vlan 1

[DeviceA-HundredGigE1/0/2] port trunk permit vlan 2

[DeviceA-HundredGigE1/0/2] port trunk pvid vlan 2

[DeviceA-HundredGigE1/0/2] quit

# 配置MSTP,并将Device A作为MSI 1的根桥。

[DeviceA] stp region-configuration

[DeviceA-mst-region] region-name vrrp

[DeviceA-mst-region] instance 1 vlan 2

[DeviceA-mst-region] active region-configuration

[DeviceA-mst-region] quit

[DeviceA] stp instance 1 root primary

[DeviceA] stp global enable

(2)     Device B的配置

# 配置接口IP地址。

<DeviceB> system-view

[DeviceB] interface hundredgige 1/0/1

[DeviceB-HundredGigE1/0/1] undo shutdown

[DeviceB-HundredGigE1/0/1] quit

[DeviceB] vlan 2

[DeviceB-vlan2] port hundredgige 1/0/1

[DeviceB-vlan2] quit

[DeviceB] interface vlan-interface 2

[DeviceB-Vlan-interface2] undo shutdown

[DeviceB-Vlan-interface2] ipv6 address fe80::2 link-local

[DeviceB-Vlan-interface2] ipv6 address 1::2 64

# 创建VRRP备份组1,并配置备份组1的虚拟IPv6地址为FE80::10和1::10。

[DeviceB-Vlan-interface2] vrrp ipv6 vrid 1 virtual-ip fe80::10 link-local

[DeviceB-Vlan-interface2] vrrp ipv6 vrid 1 virtual-ip 1::10

# 配置允许发布RA消息,以便Area A的主机通过RA消息学习到缺省网关地址。

[DeviceB-Vlan-interface2] undo ipv6 nd ra halt

# 设置Device B工作在抢占方式,抢占延迟时间为500厘秒。

[DeviceB-Vlan-interface2] vrrp ipv6 vrid 1 preempt-mode delay 500

[DeviceB-Vlan-interface2] quit

# 配置两个网关设备间采用Trunk口直连,允许VLAN 2的报文通过

[DeviceB] interface hundredgige 1/0/2

[DeviceB-HundredGigE1/0/2] undo shutdown

[DeviceB-HundredGigE1/0/2] port link-type trunk

[DeviceB-HundredGigE1/0/2] undo port trunk permit vlan 1

[DeviceB-HundredGigE1/0/2] port trunk permit vlan 2

[DeviceB-HundredGigE1/0/2] port trunk pvid vlan 2

[DeviceB-HundredGigE1/0/2] quit

# 配置MSTP,并全局使能STP。

[DeviceB] stp region-configuration

[DeviceB-mst-region] region-name vrrp

[DeviceB-mst-region] instance 1 vlan 2

[DeviceB-mst-region] active region-configuration

[DeviceB-mst-region] quit

[DeviceB] stp instance 1 root secondary

[DeviceB] stp global enable

(3)     Switch A的配置

# 配置MSTP,将VLAN2映射到MSI 1,激活MSTI配置,全局使能STP协议。

<SwitchA> system-view

[SwitchA] stp region-configuration

[SwitchA-mst-region] region-name vrrp

[SwitchA-mst-region] instance 1 vlan 2

[SwitchA-mst-region] active region-configuration

[SwitchA-mst-region] quit

[SwitchA] stp global enable

6.6  验证配置

# 配置完成后,Area A里面的主机可以ping通外网。如Host A可以ping通IPv6地址为30::1的主机。

Microsoft Windows [Version 6.1.7601]

Copyright (c) 2009 Microsoft Corporation.  All rights reserved.

 

C:\Users\hostA>ping 30::1

 

Pinging 30::1 with 32 bytes of data:

Reply from 30::1: time<1ms

Reply from 30::1: time<1ms

Reply from 30::1: time<1ms

Reply from 30::1: time<1ms

 

Ping statistics for 30::1:

    Packets: Sent = 4, Received = 4, Lost = 0 (0% loss),

Approximate round trip times in milli-seconds:

    Minimum = 0ms, Maximum = 0ms, Average = 0ms

# 通过display vrrp ipv6 verbose命令查看配置后的结果,显示Device A上IPv6 VRRP备份组1的详细信息。

[DeviceA] display vrrp ipv6 verbose

IPv6 Virtual Router Information:

 Running mode      : Standard

 Total number of virtual routers : 1

   Interface Vlan-interface2

     VRID           : 1                   Adver Timer  : 100

     Admin Status   : Up                  State        : Master

     Config Pri     : 110                 Running Pri  : 110

     Preempt Mode   : Yes                 Delay Time   : 500

     Auth Type      : None

     Virtual IP     : FE80::10

                      1::10

     Virtual MAC    : 0000-5e00-0201

     Master IP      : FE80::1

   VRRP Track Information:

     Track Object   : 1                   State : Positive   Pri Reduced : 50

# 通过display vrrp ipv6 verbose命令查看配置后的结果,显示Device B上IPv6 VRRP备份组1的详细信息。

[DeviceB] display vrrp ipv6 verbose

IPv6 Virtual Router Information:

 Running Mode      : Standard

 Total number of virtual routers : 1

   Interface Vlan-interface2

     VRID           : 1                   Adver Timer  : 100

     Admin Status   : Up                  State        : Backup

     Config Pri     : 100                 Running Pri  : 100

     Preempt Mode   : Yes                 Delay Time   : 500

     Become Master  : 3000ms left

     Auth Type      : None

     Virtual IP     : FE80::10

                      1::10

     Master IP      : FE80::1

以上显示信息表示在IPv6 VRRP备份组1中Device A为Master路由器,Device B为Backup路由器,Area A的用户发送给外网的报文通过Device A转发。

# Device A或Device A的上行接口出现故障后,Area A的用户上仍然可以与外网通信。

Microsoft Windows [Version 6.1.7601]

Copyright (c) 2009 Microsoft Corporation.  All rights reserved.

 

C:\Users\hostA>ping 30::1

 

Pinging 30::1 with 32 bytes of data:

Reply from 30::1: time<1ms

Reply from 30::1: time<1ms

Reply from 30::1: time<1ms

Reply from 30::1: time<1ms

 

Ping statistics for 30::1:

    Packets: Sent = 4, Received = 4, Lost = 0 (0% loss),

Approximate round trip times in milli-seconds:

    Minimum = 0ms, Maximum = 0ms, Average = 0ms

# 通过display vrrp ipv6 verbose命令查看Device B上IPv6 VRRP备份组的详细信息,Device A或Device A的上行接口出现故障后,显示Device B上IPv6 VRRP备份组1的详细信息。

[DeviceB] display vrrp ipv6 verbose

IPv6 Virtual Router Information:

 Running Mode      : Standard

 Total number of virtual routers : 1

   Interface Vlan-interface2

     VRID           : 1                   Adver Timer  : 100

     Admin Status   : Up                  State        : Master

     Config Pri     : 100                 Running Pri  : 100

     Preempt Mode   : Yes                 Delay Time   : 500

     Auth Type      : None

     Virtual IP     : FE80::10

                      1::10

     Virtual MAC    : 0000-5e00-0201

     Master IP      : FE80::2

以上显示信息表示Device A或Device A的上行接口出现故障后,Device B成为Master路由器,Area A的用户发送给外网的报文通过Device B转发。

# Device A或Device A的上行接口故障恢复后,显示Device A上VRRP备份组1的详细信息。

[DeviceA] display vrrp ipv6 verbose

IPv6 Virtual Router Information:

 Running mode      : Standard

 Total number of virtual routers : 1

   Interface Vlan-interface2

     VRID           : 1                   Adver Timer  : 100

     Admin Status   : Up                  State        : Master

     Config Pri     : 110                 Running Pri  : 110

     Preempt Mode   : Yes                 Delay Time   : 500

     Auth Type      : None

     Virtual IP     : FE80::10

                      1::10

     Virtual MAC    : 0000-5e00-0201

     Master IP      : FE80::1

   VRRP Track Information:

     Track Object   : 1                   State : Positive   Pri Reduced : 50

以上显示信息表示Device A故障恢复后,Device A会抢占成为Master,Area A的用户发送给外网的报文仍然通过Device A转发。

6.7  配置文件

·     Device A的配置文件:

#

 sysname DeviceA

#

stp region-configuration

 region-name vrrp

 instance 1 vlan 2

 active region-configuration

#

 stp instance 1 root primary

 stp global enable

#

interface Vlan-interface2

ipv6 address fe80::1 link-local

ipv6 address 1::1/64

 undo ipv6 nd ra halt

 vrrp ipv6 vrid 1 virtual-ip FE80::10 link-local

 vrrp ipv6 vrid 1 virtual-ip 1::10

 vrrp ipv6 vrid 1 priority 110

 vrrp ipv6 vrid 1 preempt-mode delay 500

 vrrp ipv6 vrid 1 track 1 priority reduced 50

#

interface HundredGigE1/0/1

 port link-mode bridge

 port access vlan 2

 #

interface HundredGigE1/0/2

 port link-mode bridge

 port link-type trunk

 undo port trunk permit vlan 1

 port trunk permit vlan 2

port trunk pvid vlan 2

#

 track 1 interface HundredGigE1/0/3

#

·     Device B的配置文件:

#

 sysname DeviceB

#

stp region-configuration

 region-name vrrp

 instance 1 vlan 2

 active region-configuration

#

 stp instance 1 root secondary

 stp global enable

#

interface Vlan-interface2

 ipv6 address fe80::2 link-local

ipv6 address 1::2/64

 undo ipv6 nd ra halt

 vrrp ipv6 vrid 1 virtual-ip FE80::10 link-local

 vrrp ipv6 vrid 1 virtual-ip 1::10

 vrrp ipv6 vrid 1 preempt-mode delay 500

#

interface HundredGigE1/0/1

 port link-mode bridge

 port access vlan 2

#

interface HundredGigE1/0/2

 port link-mode bridge

 port link-type trunk

 undo port trunk permit vlan 1

 port trunk permit vlan 2

port trunk pvid vlan 2

#

·     Switch A的配置文件:

#

 sysname SwitchA

#

stp region-configuration

 region-name vrrp

 instance 1 vlan 2

 active region-configuration

#

 stp global enable

#

7  IPv6 VRRP多备份组配置举例

7.1  组网需求

图5所示,某公司为了实现网关设备的冗余备份,以及内网主机流量的负载分担,在内部网络的出口处部署了两台设备,并使用VRRP负载分担功能,将这两台设备组成两台虚拟路由器,分别作为区域A和区域B的缺省网关。具体应用需求如下:

·     Device A是VRRP备份组1中的Master设备,Device B是VRRP备份组2中的Master设备。在正常情况下,区域A的用户通过Device A进行数据转发,区域B的用户通过Device B进行数据转发。

·     当Device A或者Device A的上行接口发生故障后,Device B能够迅速承担区域A内主机流量的转发任务;Device A故障恢复后,继续承担VRRP备份组1的网关功能;

·     当Device B或者Device B的上行接口故障发生故障后,Device A能够迅速承担区域B内主机流量的转发任务;Device B故障恢复后,继续承担VRRP备份组2的网关功能。

图5 IPv6 VRRP多备份组配置组网图

 

7.2  配置思路

·     为了让Device A和Device B分别成为VRRP备份组1和VRRP备份组2中的Master,需要在VRRP备份组1中为Device A配置较高的优先级,在VRRP备份组2中为Device B配置较高的优先级。

·     为了避免VRRP备份组中的角色频繁发生变化,可以配置一定的抢占延迟时间。

·     将VRRP组的抢占模式和监视上行接口状态功能结合使用,可以使Master设备根据上行接口的状态自动调整自身的VRRP优先级,从而使VRRP组内的角色发生转变,实现主备切换;

·     为了避免网关设备(Device A和Device B)与二层交换机形成二层环路,使用STP协议在每个VRRP备份组中阻塞一个端口。

7.3  使用版本

本举例是在R2609版本上进行配置和验证的。

7.4  配置注意事项

·     建议将备份组的虚拟IPv6地址和备份组中设备下行接口的IPv6地址配置为同一网段,否则可能导致局域网内的主机无法访问外部网络。

·     IPv6 VRRP既可以使用VRRPv2版本,也可以使用VRRPv3版本(缺省情况使用VRRPv3)。请确保IPv6 VRRP备份组中的所有路由器上配置的IPv6 VRRP版本一致,否则VRRP备份组无法正常工作。

·     删除IP地址拥有者上的VRRP备份组,将导致地址冲突。建议先修改配置了VRRP备份组的接口的IPv6地址,再删除该接口上的VRRP备份组,以避免地址冲突。

·     用户在配置降低优先级幅度时,需要确保降低后的优先级比VRRP备份组内其他设备的优先级要低,确保VRRP备份组内有其他设备被选为Master设备。

·     对于同一个VRRP备份组的成员设备,如下配置必须保证完全一样:

¡     虚拟路由器的IP地址个数

¡     每个备份组虚拟路由器的IP地址

¡     定时器间隔时间

7.5  配置步骤

(1)     Device A的配置

# 配置接口IPv6地址。

<DeviceA> system-view

[DeviceA] interface hundredgige 1/0/1

[DeviceA-HundredGigE1/0/1] undo shutdown

[DeviceA-HundredGigE1/0/1] quit

[DeviceA] vlan 101

[DeviceA-vlan101] port hundredgige 1/0/1

[DeviceA-vlan101] quit

[DeviceA] interface vlan-interface 101

[DeviceA-Vlan-interface101] undo shutdown

[DeviceA-Vlan-interface101] ipv6 address fe80::1 link-local

[DeviceA-Vlan-interface101] ipv6 address 10::2 64

[DeviceA-Vlan-interface101] quit

# 请参考以上方法配置图5中其它接口的IPv6地址,配置步骤这里省略。

# 配置两个网关设备间采用Trunk口直连,允许VLAN 101和VLAN 102的报文通过

[DeviceA] interface hundredgige 1/0/24

[DeviceA-HundredGigE1/0/24] undo shutdown

[DeviceA-HundredGigE1/0/24] port link-type trunk

[DeviceA-HundredGigE1/0/24] undo port trunk permit vlan 1

[DeviceA-HundredGigE1/0/24] port trunk permit vlan 101 to 102

[DeviceA-HundredGigE1/0/24] port trunk pvid vlan 101

[DeviceA-HundredGigE1/0/24] quit

# 关闭HundredGigE1/0/2的STP功能

[DeviceA] interface hundredgige 1/0/2

[DeviceA-HundredGigE1/0/2] undo shutdown

[DeviceA-HundredGigE1/0/2] undo stp enable

[DeviceA-HundredGigE1/0/2] quit

# 创建VRRP备份组1,并配置备份组1的虚拟IPv6地址为FE80::10和10::1,配置抢占延迟时间为500厘秒,并配置Device A在VRRP备份组1中的优先级为120,高于Device B的优先级。

[DeviceA] interface vlan-interface 101

[DeviceA-Vlan-interface101] vrrp ipv6 vrid 1 virtual-ip fe80::10 link-local

[DeviceA-Vlan-interface101] vrrp ipv6 vrid 1 virtual-ip 10::1

[DeviceA-Vlan-interface101] vrrp ipv6 vrid 1 preempt-mode delay 500

[DeviceA-Vlan-interface101] vrrp ipv6 vrid 1 priority 120

# 配置允许发布RA消息,以便Area A内主机通过RA消息学习到缺省网关地址。

[DeviceA-Vlan-interface101] undo ipv6 nd ra halt

[DeviceA-Vlan-interface101] quit

# 创建VRRP备份组2,并配置备份组2的虚拟IPv6地址为FE80::20和11::1,配置抢占延迟时间为500厘秒。

[DeviceA] interface vlan-interface 102

[DeviceA-Vlan-interface102] undo shutdown

[DeviceA-Vlan-interface102] vrrp ipv6 vrid 2 virtual-ip fe80::20 link-local

[DeviceA-Vlan-interface102] vrrp ipv6 vrid 2 virtual-ip 11::1

[DeviceA-Vlan-interface102] vrrp ipv6 vrid 2 preempt-mode delay 500

# 配置允许发布RA消息,以便Area B内主机通过RA消息学习到缺省网关地址。

[DeviceA-Vlan-interface102] undo ipv6 nd ra halt

[DeviceA-Vlan-interface102] quit

# 创建和上行接口HundredGigE1/0/2关联的Track项1。

[DeviceA] interface hundredgige 1/0/2

[DeviceA-HundredGigE1/0/2] undo shutdown

[DeviceA-HundredGigE1/0/2] quit

[DeviceA] track 1 interface hundredgige 1/0/2

# 配置监视Track项1,Track项的状态为Negative时,Device A在VRRP备份组1中的优先级降低的数值为50。

[DeviceA] interface vlan-interface 101

[DeviceA-Vlan-interface101] vrrp ipv6 vrid 1 track 1 priority reduced 50

[DeviceA-Vlan-interface101] quit

# 配置MSTP,将VLAN101映射到MSI 1,VLAN102映射到MSI 2,并将Device A作为MSI 1的根桥。

[DeviceA] stp region-configuration

[DeviceA-mst-region] region-name vrrp

[DeviceA-mst-region] instance 1 vlan 101

[DeviceA-mst-region] instance 2 vlan 102

[DeviceA-mst-region] active region-configuration

[DeviceA-mst-region] quit

[DeviceA] stp instance 1 root primary

[DeviceA] stp instance 2 root secondary

[DeviceA] stp global enable

(2)     Device B的配置

<DeviceB> system-view

[DeviceB] interface hundredgige 1/0/1

[DeviceB-HundredGigE1/0/1] undo shutdown

[DeviceB-HundredGigE1/0/1] quit

[DeviceB] vlan 101

[DeviceB-vlan101] port hundredgige 1/0/1

[DeviceB-vlan101] quit

[DeviceB] interface vlan-interface 101

[DeviceB-Vlan-interface101] undo shutdown

[DeviceB-Vlan-interface101] ipv6 address fe80::2 link-local

[DeviceB-Vlan-interface101] ipv6 address 10::3 64

[DeviceB-Vlan-interface101] quit

# 请参考以上方法配置图5中其它接口的IP地址,配置步骤省略。

# 配置两个网关设备间采用trunk口直连,允许VLAN 101和VLAN 102的报文通过

[DeviceB] interface hundredgige 1/0/24

[DeviceB-HundredGigE1/0/24] undo shutdown

[DeviceB-HundredGigE1/0/24] port link-type trunk

[DeviceB-HundredGigE1/0/24] undo port trunk permit vlan 1

[DeviceB-HundredGigE1/0/24] port trunk permit vlan 101 to 102

[DeviceB-HundredGigE1/0/24] port trunk pvid vlan 101

[DeviceB-HundredGigE1/0/24] quit

# 关闭HundredGigE1/0/2的STP功能

[DeviceB] interface hundredgige 1/0/2

[DeviceB-HundredGigE1/0/2] undo shutdown

[DeviceB-HundredGigE1/0/2] undo stp enable

[DeviceB-HundredGigE1/0/2] quit

# 创建VRRP备份组1,并配置备份组1的虚拟IPv6地址为FE80::10和10::1。

[DeviceB] interface vlan-interface 101

[DeviceB-Vlan-interface101] vrrp ipv6 vrid 1 virtual-ip fe80::10 link-local

[DeviceB-Vlan-interface101] vrrp ipv6 vrid 1 virtual-ip 10::1

[DeviceB-Vlan-interface101] vrrp ipv6 vrid 1 preempt-mode delay 500

# 配置允许发布RA消息,以便Area A内主机通过RA消息学习到缺省网关地址。

[DeviceB-Vlan-interface101] undo ipv6 nd ra halt

[DeviceB-Vlan-interface101] quit

# 创建VRRP备份组2,并配置备份组1的虚拟IPv6地址为FE80::20和11::1,并配置Device B在VRRP备份组2中的优先级为120,高于Device A的优先级。

[DeviceB] interface vlan-interface 102

[DeviceB-Vlan-interface102] undo shutdown

[DeviceB-Vlan-interface102] vrrp ipv6 vrid 2 virtual-ip fe80::20 link-local

[DeviceB-Vlan-interface102] vrrp ipv6 vrid 2 virtual-ip 11::1

[DeviceB-Vlan-interface102] vrrp ipv6 vrid 2 priority 120

[DeviceA-Vlan-interface102] vrrp ipv6 vrid 2 preempt-mode delay 500

# 配置允许发布RA消息,以便Area B内主机通过RA消息学习到缺省网关地址。

[DeviceB-Vlan-interface102] undo ipv6 nd ra halt

[DeviceB-Vlan-interface102] quit

# 创建和上行接口HundredGigE1/0/2关联的Track项2。

[DeviceB] interface hundredgige 1/0/2

[DeviceB-HundredGigE1/0/2] undo shutdown

[DeviceB-HundredGigE1/0/2] quit

[DeviceB] track 2 interface hundredgige 1/0/2

# 配置监视Track项2,Track项的状态为Negative时,Device B在VRRP备份组2中的优先级降低的数值为50。

[DeviceB] interface vlan-interface 102

[DeviceB-Vlan-interface102] vrrp ipv6 vrid 2 track 2 priority reduced 50

[DeviceB-Vlan-interface102] quit

# 配置MSTP,将VLAN101映射到MSI 1,VLAN102映射到MSI 2,并将Device B作为MSI 2的根桥。

[DeviceB] stp region-configuration

[DeviceB-mst-region] region-name vrrp

[DeviceB-mst-region] instance 1 vlan 101

[DeviceB-mst-region] instance 2 vlan 102

[DeviceB-mst-region] active region-configuration

[DeviceB-mst-region] quit

[DeviceB] stp instance 2 root primary

[DeviceB] stp instance 1 root secondary

[DeviceB] stp global enable

(3)     L2SwitchA的配置

# 配置MSTP,将VLAN101映射到MSI 1,激活MSTI配置,全局使能STP协议。

<L2SwitchA> system-view

[L2SwitchA] stp region-configuration

[L2SwitchA-mst-region] region-name vrrp

[L2SwitchA-mst-region] instance 1 vlan 101

[L2SwitchA-mst-region] active region-configuration

[L2SwitchA-mst-region] quit

[L2SwitchA] stp global enable

(4)     L2SwitchB的配置

# 配置MSTP,将VLAN102映射到MSI 1,激活MSTI配置,全局使能STP协议。

<L2SwitchB> system-view

[L2SwitchB] stp region-configuration

[L2SwitchB-mst-region] region-name vrrp

[L2SwitchB-mst-region] instance 1 vlan 102

[L2SwitchB-mst-region] active region-configuration

[L2SwitchB-mst-region] quit

[L2SwitchB] stp global enable

7.6  验证配置

(1)     配置完成后,区域A和区域B中的主机都可以ping通外网。

# 检查区域A到外网IPv6地址为30::1的主机是否可达。

Microsoft Windows [Version 6.1.7601]

Copyright (c) 2009 Microsoft Corporation.  All rights reserved.

 

C:\Users\areaA>ping 30::1

 

Pinging 30::1 with 32 bytes of data:

Reply from 30::1: time<1ms

Reply from 30::1: time<1ms

Reply from 30::1: time<1ms

Reply from 30::1: time<1ms

 

Ping statistics for 30::1:

    Packets: Sent = 4, Received = 4, Lost = 0 (0% loss),

Approximate round trip times in milli-seconds:

Minimum = 0ms, Maximum = 0ms, Average = 0ms

# 检查区域B到外网IPv6地址为30::1的主机是否可达。

Microsoft Windows [Version 6.1.7601]

Copyright (c) 2009 Microsoft Corporation.  All rights reserved.

 

C:\Users\areaB>ping 30::1

 

Pinging 30::1 with 32 bytes of data:

Reply from 30::1: time<1ms

Reply from 30::1: time<1ms

Reply from 30::1: time<1ms

Reply from 30::1: time<1ms

 

Ping statistics for 30::1:

    Packets: Sent = 4, Received = 4, Lost = 0 (0% loss),

Approximate round trip times in milli-seconds:

Minimum = 0ms, Maximum = 0ms, Average = 0ms

(2)     通过display vrrp ipv6 verbose命令查看配置后的结果。

# 查看Device A上全部IPv6 VRRP备份组的详细信息,显示Device A在VRRP备份组1中为Master设备,在VRRP备份组2中为Backup设备。

[DeviceA] display vrrp ipv6 verbose

IPv6 Virtual Router Information:

 Running Mode       : Standard

 Total number of virtual routers : 2

   Interface Vlan-interface101

     VRID           : 1                    Adver Timer  : 100

     Admin Status   : Up                   State        : Master

     Config Pri     : 120                  Running Pri  : 120

     Preempt Mode   : Yes                  Delay Time   : 500

     Auth Type      : None

     Virtual IP     : FE80::10

                      10::1

     Virtual MAC    : 0000-5e00-0201

     Master IP      : FE80::1

   VRRP Track Information:

     Track Object   : 1                   State : Positive   Pri Reduced : 50

 

   Interface Vlan-interface102

     VRID           : 2                    Adver Timer  : 100

     Admin Status   : Up                   State        : Backup

     Config Pri     : 100                  Running Pri  : 100

     Preempt Mode   : Yes                  Delay Time   : 500

     Auth Type      : None

     Become Master  : 3550ms left

     Virtual IP     : FE80::20

                      11::1

     Master IP      : FE80::4

# 查看Device B上全部IPv6 VRRP备份组的详细信息,显示Device B在备份组1中为Backup设备,在备份组2中为Master设备。

[DeviceB] display vrrp ipv6 verbose

IPv6 Virtual Router Information:

 Running Mode       : Standard

 Total number of virtual routers : 2

   Interface Vlan-interface101

     VRID           : 1                    Adver Timer  : 100

     Admin Status   : Up                   State        : Backup

     Config Pri     : 100                  Running Pri  : 100

     Preempt Mode   : Yes                  Delay Time   : 500

     Auth Type      : None

     Become Master  : 3500ms left

     Virtual IP     : FE80::10

                      10::2

     Master IP      : FE80::1

 

   Interface Vlan-interface102

     VRID           : 2                    Adver Timer  : 100

     Admin Status   : Up                   State        : Master

     Config Pri     : 120                  Running Pri  : 120

     Preempt Mode   : Yes                  Delay Time   : 500

     Auth Type      : None

     Virtual IP     : FE80::20

                      11::1

     Virtual MAC    : 0000-5e00-0202

     Master IP      : FE80::4

   VRRP Track Information:

     Track Object   : 2                   State : Positive   Pri Reduced : 50

# Device A或Device A的上行接口出现故障后,通过display vrrp ipv6 verbose命令查看Device B上备份组的详细信息。可以看到Device B抢占为备份组1的Master。

[DeviceB] display vrrp ipv6 verbose

IPv6 Virtual Router Information:

 Running  Mode       : Standard

 Total number of virtual routers : 2

   Interface Vlan-interface101

     VRID           : 1                    Adver Timer  : 100

     Admin Status   : Up                   State        : Master

     Config Pri     : 100                  Running Pri  : 100

     Preempt Mode   : Yes                  Delay Time   : 500

     Auth Type      : None

     Virtual IP     : FE80::10

                      10::2

     Virtual MAC    : 0000-5e00-0101

     Master IP      : FE80::2

 

  Interface Vlan-interface102

     VRID           : 2                    Adver Timer  : 100

     Admin Status   : Up                   State        : Master

     Config Pri     : 120                  Running Pri  : 120

     Preempt Mode   : Yes                  Delay Time   : 500

     Auth Type      : None

     Virtual IP     : FE80::20

                      11::1

     Virtual MAC    : 0000-5e00-0202

     Master IP      : FE80::4

   VRRP Track Information:

     Track Object   : 2                   State : Positive   Pri Reduced : 50

以上显示信息表示Device ADevice A的上行接口出现故障后,Device B抢占成为Master,负责转发用户的业务数据。

# 当Device A故障恢复后,显示Device A上备份组的详细信息。

[DeviceA] display vrrp ipv6 verbose

IPv6 Virtual Router Information:

 Running Mode       : Standard

 Total number of virtual routers : 2

   Interface Vlan-interface101

     VRID           : 1                    Adver Timer  : 100

     Admin Status   : Up                   State        : Master

     Config Pri     : 120                  Running Pri  : 120

     Preempt Mode   : Yes                  Delay Time   : 500

     Auth Type      : None

     Virtual IP     : FE80::10

                      10::1

     Virtual MAC    : 0000-5e00-0201

     Master IP      : FE80::1

   VRRP Track Information:

     Track Object   : 1                   State : Positive   Pri Reduced : 50

 

   Interface Vlan-interface102

     VRID           : 2                    Adver Timer  : 100

     Admin Status   : Up                   State        : Backup

     Config Pri     : 100                  Running Pri  : 100

     Preempt Mode   : Yes                  Delay Time   : 500

     Auth Type      : None

     Become Master  : 3550ms left

     Virtual IP     : FE80::20

                      11::1

     Master IP      : FE80::4

以上显示信息表示当Device A或Device A的上行接口故障恢复后,Device A在VRRP备份组1中恢复为原来的优先级并抢占成为该备份组的Master,区域A内的主机通过Device A与外界通信。

7.7  配置文件

·     Device A的配置文件:

#

vlan 101 to 102

#

vlan 4094

#

stp region-configuration

 region-name vrrp

 instance 1 vlan 101

 instance 2 vlan 102

 active region-configuration

#

 stp instance 1 root primary

 stp global enable

#

interface Vlan-interface101

ipv6 address fe80::1 link-local

ipv6 address 10::2/64

undo ipv6 nd ra halt

 vrrp ipv6 vrid 1 virtual-ip fe80::10 link-local

 vrrp ipv6 vrid 1 virtual-ip 10::1

vrrp ipv6 vrid 1 priority 120

vrrp ipv6 vrid 1 preempt-mode delay 500

 vrrp ipv6 vrid 1 track 1 priority reduced 50

#

interface Vlan-interface102

 ipv6 address fe80::3 link-local

ipv6 address 11::2/64

undo ipv6 nd ra halt

vrrp ipv6 vrid 2 virtual-ip fe80::20 link-local

 vrrp ipv6 vrid 2 virtual-ip 11::1

vrrp ipv6 vrid 2 preempt-mode delay 500

#

interface Vlan-interface4094

ipv6 address 3::101/64

undo stp enable

#

interface HundredGigE1/0/1

 port link-mode bridge

 port access vlan 101

#

interface HundredGigE1/0/2

 port link-mode bridge

 port access vlan 4094

 undo stp enable

#

interface HundredGigE1/0/3

 port link-mode bridge

 port access vlan 102

#

interface HundredGigE1/0/24

port link-mode bridge

 port link-type trunk

 undo port trunk permit vlan 1

 port trunk permit vlan 101 to 102

 port trunk pvid vlan 101

#

 track 1 interface vlan-interface 4094

#

·     Device B的配置文件:

#

vlan 101 to 102

#

vlan 4094

#

stp region-configuration

 region-name vrrp

 instance 1 vlan 101

 instance 2 vlan 102

 active region-configuration

#

stp instance 2 root primary

 stp global enable

#

interface Vlan-interface101

ipv6 address fe80::3 link-local

ipv6 address 10::3/64

undo ipv6 nd ra halt

 vrrp ipv6 vrid 1 virtual-ip fe80::10 link-local

 vrrp ipv6 vrid 1 virtual-ip 10::1

vrrp ipv6 vrid 1 preempt-mode delay 500

#

interface Vlan-interface102

ipv6 address fe80::2 link-local

ipv6 address 11::3/64

undo ipv6 nd ra halt

 vrrp ipv6 vrid 2 virtual-ip fe80::20 link-local

 vrrp ipv6 vrid 2 virtual-ip 11::1

vrrp ipv6 vrid 2 priority 120

vrrp ipv6 vrid 2 preempt-mode delay 500

 vrrp ipv6 vrid 2 track 1 priority reduced 50

#

interface Vlan-interface4094

ipv6 address 4::101/64

#

interface HundredGigE1/0/1

 port link-mode bridge

 port access vlan 101

#

interface HundredGigE1/0/2

 port link-mode bridge

 port access vlan 4094

 undo stp enable

#

interface HundredGigE1/0/3

 port link-mode bridge

 port access vlan 102

#

interface HundredGigE1/0/24

 port link-mode bridge

 port link-type trunk

 undo port trunk permit vlan 1

 port trunk permit vlan 101 to 102

 port trunk pvid vlan 101

#

 track 2 interface vlan-interface 4094

#

·     L2Switch A的配置文件:

#

 sysname L2SwitchA

#

stp region-configuration

 region-name vrrp

 instance 1 vlan 101

 active region-configuration

#

 stp global enable

#

·     L2Switch B的配置文件:

#

 sysname L2SwitchB

#

stp region-configuration

 region-name vrrp

 instance 1 vlan 102

 active region-configuration

#

 stp global enable

#

8  IPv6 VRRP负载均衡模式配置举例

8.1  组网需求

图6所示,Host A、Host B和Host C所在网络的出口处部署了三台设备。现要求使用VRRP负载均衡功能,将Device A、Device B和Device C组成一台虚拟路由器,作为局域网内主机的缺省网关。具体应用需求如下:

·     实现VRRP备份组中三台设备都可以转发报文,实现流量负载分担,充分利用网关资源;

·     当Device A、Device B或Device C自身或其上行接口出现故障时,Host A、Host B和Host C可以通过其他正常运行的设备继续通信,避免通信中断;当Device A、Device B或Device C故障恢复后,继续承担网关功能。

图6 IPv6 VRRP负载均衡模式配置组网图

 

8.2  配置思路

·     为了使Device A优先与Device B和Device C被选举为VRRP备份组的Master设备,需要为其配置高于Device B和Device C的优先级;为了使Device B优先于Device C被选举为VRRP备份组的Master设备,需要为其配置高于Device C的优先级;

·     为了避免由于故障造成VRRP备份组中的角色频繁发生变化,可以配置一定的抢占延迟时间;

·     在Device A、Device B和Device C上配置虚拟转发器通过Track项监视上行接口的状态。当上行接口出现故障时,降低该接口所在设备虚拟转发器的权重,以便其他设备接管该设备的转发任务,避免通信中断;

·     为了保证原Master设备故障恢复后,能再次抢占成为Master,需要配置VRRP备份组工作在抢占模式。

8.3  使用版本

本举例是在R2609版本上进行配置和验证的。

8.4  配置注意事项

·     建议将备份组的虚拟IPv6地址和备份组中设备下行接口的IPv6地址配置为同一网段,否则可能导致局域网内的主机无法访问外部网络。

·     IPv6 VRRP既可以使用VRRPv2版本,也可以使用VRRPv3版本(缺省情况使用VRRPv3)。请确保IPv6 VRRP备份组中的所有路由器上配置的IPv6 VRRP版本一致,否则VRRP备份组无法正常工作。

·     VRRP工作在负载均衡模式时,备份组的虚拟IPv6地址和接口的IPv6地址不能相同,否则VRRP负载均衡功能将无法正常工作。

·     当监视的上行链路出现故障时,配置的权重降低数额需保证VF Owner的权重低于失效下限,即权重降低的数额大于245,其它的虚拟转发器才能接替VF Owner成为AVF。

·     对于同一个VRRP备份组的成员设备,必须保证备份组虚拟路由器的IPv6地址配置完全一样。

·     用户在配置降低权重幅度时,需要确保降低后的优先级比VRRP备份组内其他设备的优先级要低,确保VRRP备份组内有其他设备被选为Master。

8.5  配置步骤

8.5.1  Device A的配置

# 配置接口IPv6地址。

<DeviceA> system-view

[DeviceA] interface hundredgige 1/0/1

[DeviceA-HundredGigE1/0/1] undo shutdown

[DeviceA-HundredGigE1/0/1] quit

[DeviceA] vlan 2

[DeviceA-vlan2] port hundredgige 1/0/1

[DeviceA-vlan2] quit

[DeviceA] interface vlan-interface 2

[DeviceA-Vlan-interface2] undo shutdown

[DeviceA-Vlan-interface2] ip address ipv6 address fe80::1 link-local

[DeviceA-Vlan-interface2] ipv6 address 1::1 64

[DeviceA-Vlan-interface2] quit

(1)     配置VRRP

# 配置VRRP工作在负载均衡模式。

[DeviceA] vrrp ipv6 mode load-balance

# 创建VRRP备份组1,并配置备份组1的虚拟IPv6地址为FE80::10和1::10。

[DeviceA] interface vlan-interface 2

[DeviceA-Vlan-interface2] vrrp ipv6 vrid 1 virtual-ip fe80::10 link-local

[DeviceA-Vlan-interface2] vrrp ipv6 vrid 1 virtual-ip 1::10

# 配置Device A在VRRP备份组1中的优先级为120,高于Device B的优先级110和Device C的优先级100,以保证Device A成为Master。

[DeviceA-Vlan-interface2] vrrp ipv6 vrid 1 priority 120

# 配置Device A工作在抢占方式,配置抢占延迟时间为500厘秒。

[DeviceA-Vlan-interface2] vrrp ipv6 vrid 1 preempt-mode delay 500

# 配置允许发布RA消息,以便1::/64网段内主机通过RA消息学习到缺省网关地址。

[DeviceA-Vlan-interface2] undo ipv6 nd ra halt

[DeviceA-Vlan-interface2] quit

(2)     配置Track

# 创建和HundredGigE1/0/2关联的Track项1。如果Track项的状态为Negative,则说明Device A的上行接口出现故障。

[DeviceA] interface hundredgige 1/0/2

[DeviceA-HundredGigE1/0/2] undo shutdown

[DeviceA-HundredGigE1/0/2] quit

[DeviceA] track 1 interface hundredgige 1/0/2

# 配置虚拟转发器监视Track项1。Track项的状态为Negative时,降低Device A上虚拟转发器的权重,使其低于失效下限10,即权重降低的数额大于245,以便其他设备接替Device A的转发任务。本例中,配置虚拟转发器权重降低数额为250。

[DeviceA] interface vlan-interface 2

[DeviceA-Vlan-interface2] vrrp ipv6 vrid 1 track 1 weight reduced 250

[DeviceA-Vlan-interface2] quit

8.5.2   Device B的配置

(1)     配置接口

# 配置接口IPv6地址。

<DeviceB> system-view

[DeviceB] interface hundredgige 1/0/1

[DeviceB-HundredGigE1/0/1] undo shutdown

[DeviceB-HundredGigE1/0/1] quit

[DeviceB] vlan 2

[DeviceB-vlan2] port hundredgige 1/0/1

[DeviceB-vlan2] quit

[DeviceB] interface vlan-interface 2

[DeviceB-Vlan-interface2] undo shutdown

[DeviceB-Vlan-interface2] ip address ipv6 address fe80::2 link-local

[DeviceB-Vlan-interface2] ipv6 address 1::2 64

[DeviceB-Vlan-interface2] quit

(2)     配置VRRP

# 配置VRRP工作在负载均衡模式。

[DeviceB] vrrp ipv6 mode load-balance

# 创建VRRP备份组1,并配置备份组1的虚拟IPv6地址为FE80::10和1::10。

[DeviceB] interface vlan-interface 2

[DeviceB-Vlan-interface2] vrrp ipv6 vrid 1 virtual-ip fe80::10 link-local

[DeviceB-Vlan-interface2] vrrp ipv6 vrid 1 virtual-ip 1::10

# 配置Device B的优先级110,高于Device C的优先级100,以保证Device A出现故障时,Device B成为Master。

[DeviceB-Vlan-interface2] vrrp ipv6 vrid 1 priority 110

# 配置Device B工作在抢占方式,配置抢占延迟时间为5秒。

[DeviceB-Vlan-interface2] vrrp ipv6 vrid 1 preempt-mode delay 500

# 配置允许发布RA消息,以便1::/64网段内主机通过RA消息学习到缺省网关地址。

[DeviceB-Vlan-interface2] undo ipv6 nd ra halt

[DeviceB-Vlan-interface2] quit

(3)     配置Track

# 创建和HundredGigE1/0/2关联的Track项1。如果Track项的状态为Negative,则说明Device B的上行接口出现故障。

[DeviceB] interface hundredgige 1/0/2

[DeviceB-HundredGigE1/0/2] undo shutdown

[DeviceB-HundredGigE1/0/2] quit

[DeviceB] track 1 interface hundredgige 1/0/2

# 配置虚拟转发器监视Track项1。Track项的状态为Negative时,降低Device B上虚拟转发器的权重,使其低于失效下限10,即权重降低的数额大于245,以便其他设备接替Device B的转发任务。本例中,配置虚拟转发器权重降低数额为250。

[DeviceB] interface vlan-interface 2

[DeviceB-Vlan-interface2] vrrp ipv6 vrid 1 track 1 weight reduced 250

[DeviceB-Vlan-interface2] quit

8.5.3  Device C的配置

(1)     配置接口

# 配置接口IPv6地址。

<DeviceC> system-view

[DeviceC] interface hundredgige 1/0/1

[DeviceC-HundredGigE1/0/1] undo shutdown

[DeviceC-HundredGigE1/0/1] quit

[DeviceC] vlan 2

[DeviceC-vlan2] port hundredgige 1/0/1

[DeviceC-vlan2] quit

[DeviceC] interface vlan-interface 2

[DeviceC-Vlan-interface2] undo shutdown

[DeviceC-Vlan-interface2] ip address ipv6 address fe80::3 link-local

[DeviceC-Vlan-interface2] ipv6 address 1::3 64

[DeviceC-Vlan-interface2] quit

(2)     配置VRRP

# 配置VRRP工作在负载均衡模式。

[DeviceC] vrrp ipv6 mode load-balance

# 创建VRRP备份组1,并配置备份组1的虚拟IPv6地址为FE80::10和1::10。

[DeviceC] interface vlan-interface 2

[DeviceC-Vlan-interface2] vrrp ipv6 vrid 1 virtual-ip fe80::10 link-local

[DeviceC-Vlan-interface2] vrrp ipv6 vrid 1 virtual-ip 1::10

# 配置Device C工作在抢占方式,配置抢占延迟时间为500厘秒。

[DeviceC-Vlan-interface2] vrrp ipv6 vrid 1 preempt-mode delay 500

# 配置允许发布RA消息,以便1::/64网段内主机通过RA消息学习到缺省网关地址。

[DeviceC-Vlan-interface2] undo ipv6 nd ra halt

[DeviceC-Vlan-interface2] quit

(3)     配置Track

# 创建和HundredGigE1/0/2关联的Track项1。如果Track项的状态为Negative,则说明Device C的上行接口出现故障。

[DeviceC] interface hundredgige 1/0/2

[DeviceC-HundredGigE1/0/2] undo shutdown

[DeviceC-HundredGigE1/0/2] quit

[DeviceC] track 1 interface hundredgige 1/0/2

# 配置虚拟转发器监视Track项1。Track项的状态为Negative时,降低Device C上虚拟转发器的权重,使其低于失效下限10,即权重降低的数额大于245,以便其他设备接替Device C的转发任务。本例中,配置虚拟转发器权重降低数额为250。

[DeviceC] interface vlan-interface 2

[DeviceC-Vlan-interface2] vrrp ipv6 vrid 1 track 1 weight reduced 250

[DeviceC-Vlan-interface2] quit

8.5.4  验证配置

(1)     配置完成后,在Host A上可以ping通外网,通过display vrrp ipv6 verbose命令查看配置后的结果

# 显示Device A上VRRP备份组的详细信息。

[DeviceA] display vrrp ipv6 verbose

IPv6 Virtual Device Information:

 Running Mode      : Load Balance

 Total number of virtual routers : 1

   Interface Vlan-interface2

     VRID           : 1                    Adver Timer  : 100

     Admin Status   : Up                   State        : Master

     Config Pri     : 120                  Running Pri  : 120

     Preempt Mode   : Yes                  Delay Time   : 500

     Auth Type      : None

     Virtual IP     : FE80::10

                      1::10

     Member IP List : FE80::1 (Local, Master)

                      FE80::2 (Backup)

                      FE80::3 (Backup)

   Forwarder Information: 3 Forwarders 1 Active

     Config Weight  : 255

     Running Weight : 255

    Forwarder 01

     State          : Active

     Virtual MAC    : 000f-e2ff-0011 (Owner)

     Owner ID       : 0000-5e01-1101

     Priority       : 255

     Active         : local

    Forwarder 02

     State          : Listening

     Virtual MAC    : 000f-e2ff-0012 (Learnt)

     Owner ID       : 0000-5e01-1103

     Priority       : 127

     Active         : FE80::2

    Forwarder 03

     State          : Listening

     Virtual MAC    : 000f-e2ff-0013 (Learnt)

     Owner ID       : 0000-5e01-1105

     Priority       : 127

     Active         : FE80::3

   Forwarder Weight Track Information:

     Track Object   : 1          State : Positive   Weight Reduced : 250

# 显示Device B上VRRP备份组的详细信息。

[DeviceB] display vrrp ipv6 verbose

IPv6 Virtual Device Information:

 Running Mode      : Load Balance

 Total number of virtual routers : 1

   Interface Vlan-interface2

     VRID           : 1                    Adver Timer  : 100

     Admin Status   : Up                   State        : Backup

     Config Pri     : 110                  Running Pri  : 110

     Preempt Mode   : Yes                  Delay Time   : 500

     Auth Type      : None

     Virtual IP     : FE80::10

                      1::10

     Member IP List : FE80::2 (Local, Backup)

                      FE80::1 (Master)

                      FE80::3 (Backup)

   Forwarder Information: 3 Forwarders 1 Active

     Config Weight  : 255

     Running Weight : 255

    Forwarder 01

     State          : Listening

     Virtual MAC    : 000f-e2ff-0011 (Learnt)

     Owner ID       : 0000-5e01-1101

     Priority       : 127

     Active         : FE80::1

    Forwarder 02

     State          : Active

     Virtual MAC    : 000f-e2ff-0012 (Owner)

     Owner ID       : 0000-5e01-1103

     Priority       : 255

     Active         : local

    Forwarder 03

     State          : Listening

     Virtual MAC    : 000f-e2ff-0013 (Learnt)

     Owner ID       : 0000-5e01-1105

     Priority       : 127

     Active         : FE80::3

   Forwarder Weight Track Information:

     Track Object   : 1          State : Positive   Weight Reduced : 250

# 显示Device C上VRRP备份组的详细信息。

[DeviceC] display vrrp ipv6 verbose

IPv4 Virtual Device Information:

 Running Mode      : Load Balance

 Total number of virtual routers : 1

   Interface Vlan-interface2

     VRID           : 1                    Adver Timer  : 100

     Admin Status   : Up                   State        : Backup

     Config Pri     : 100                  Running Pri  : 100

     Preempt Mode   : Yes                  Delay Time   : 500

     Auth Type      : None

   Virtual IP     : FE80::10

                      1::10

     Member IP List : FE80::3 (Local, Backup)

                      FE80::1 (Master)

                      FE80::2 (Backup)

   Forwarder Information: 3 Forwarders 1 Active

     Config Weight  : 255

     Running Weight : 255

    Forwarder 01

     State          : Listening

     Virtual MAC    : 000f-e2ff-0011 (Learnt)

     Owner ID       : 0000-5e01-1101

     Priority       : 127

     Active         : FE80::1

    Forwarder 02

     State          : Listening

     Virtual MAC    : 000f-e2ff-0012 (Learnt)

     Owner ID       : 0000-5e01-1103

     Priority       : 127

     Active         : FE80::2

    Forwarder 03

     State          : Active

     Virtual MAC    : 000f-e2ff-0013 (Owner)

     Owner ID       : 0000-5e01-1105

     Priority       : 255

     Active         : local

   Forwarder Weight Track Information:

     Track Object   : 1          State : Positive   Weight Reduced : 250

以上显示信息表示在VRRP备份组1中Device A为Master,Device B和Device C 为Backup。Device A、Device B和Device C上各自存在一个AVF,并存在作为备份的两个LVF。

(2)     Device A的上行接口(VLAN接口3)出现故障后

# 显示Device A上VRRP备份组的详细信息。

[DeviceA] display vrrp ipv6 verbose

IPv6 Virtual Device Information:

 Running Mode      : Load Balance

 Total number of virtual routers : 1

   Interface Vlan-interface2

     VRID           : 1                    Adver Timer  : 100

     Admin Status   : Up                   State        : Master

     Config Pri     : 120                  Running Pri  : 120

     Preempt Mode   : Yes                  Delay Time   : 500

     Auth Type      : None

     Virtual IP     : FE80::10

                      1::10

     Member IP List : FE80::1 (Local, Master)

                      FE80::2 (Backup)

                      FE80::3 (Backup)

   Forwarder Information: 3 Forwarders 0 Active

     Config Weight  : 255

     Running Weight : 5

    Forwarder 01

     State          : Initialize

     Virtual MAC    : 000f-e2ff-0011 (Owner)

     Owner ID       : 0000-5e01-1101

     Priority       : 0

     Active         : FE80::3

    Forwarder 02

     State          : Initialize

     Virtual MAC    : 000f-e2ff-0012 (Learnt)

     Owner ID       : 0000-5e01-1103

     Priority       : 0

     Active         : FE80::2

    Forwarder 03

     State          : Initialize

     Virtual MAC    : 000f-e2ff-0013 (Learnt)

     Owner ID       : 0000-5e01-1105

     Priority       : 0

     Active         : FE80::3

   Forwarder Weight Track Information:

     Track Object   : 1          State : Negative   Weight Reduced : 250

# 显示Device C上VRRP备份组的详细信息。

[DeviceC] display vrrp ipv6 verbose

IPv6 Virtual Device Information:

 Running Mode      : Load Balance

 Total number of virtual routers : 1

   Interface Vlan-interface2

     VRID           : 1                    Adver Timer  : 100

     Admin Status   : Up                   State        : Backup

     Config Pri     : 100                  Running Pri  : 100

     Preempt Mode   : Yes                  Delay Time   : 500

     Auth Type      : None

     Become Master  : 3550ms left

      Virtual IP     : FE80::10

                       1::10

     Member IP List : FE80::3 (Local, Backup)

                      FE80::1 (Master)

                      FE80::2 (Backup)

   Forwarder Information: 3 Forwarders 2 Active

     Config Weight  : 255

     Running Weight : 255

    Forwarder 01

     State          : Active

     Virtual MAC    : 000f-e2ff-0011 (Take Over)

     Owner ID       : 0000-5e01-1101

     Priority       : 85

     Active         : local

     Redirect Time  : 93 secs

     Time-out Time  : 1293 secs

    Forwarder 02

     State          : Listening

     Virtual MAC    : 000f-e2ff-0012 (Learnt)

     Owner ID       : 0000-5e01-1103

     Priority       : 85

     Active         : FE80::2

    Forwarder 03

     State          : Active

     Virtual MAC    : 000f-e2ff-0013 (Owner)

     Owner ID       : 0000-5e01-1105

     Priority       : 255

     Active         : local

   Forwarder Weight Track Information:

     Track Object   : 1          State : Positive   Weight Reduced : 250

以上显示信息表示Device A的上行接口出现故障后,Device A上虚拟转发器的权重降低为5,低于失效下限。Device A上所有虚拟转发器的状态均变为Initialized,不能再用于转发。Device C成为虚拟MAC地址000f-e2ff-0011对应虚拟转发器的AVF,接管Device A的转发任务。

# Timeout Timer超时后(约1800秒后),查看Device C上VRRP备份组的详细信息。

[DeviceC] display vrrp ipv6 verbose

IPv6 Virtual Device Information:

 Running Mode      : Load Balance

 Total number of virtual routers : 1

   Interface Vlan-interface2

     VRID           : 1                    Adver Timer  : 100

     Admin Status   : Up                   State        : Backup

     Config Pri     : 100                  Running Pri  : 100

     Preempt Mode   : Yes                  Delay Time   : 500

     Auth Type      : None

     Become Master  : 3550ms left

     Virtual IP     : FE80::10

                      1::10

     Member IP List : FE80::3 (Local, Backup)

                      FE80::1 (Master)

                      FE80::2 (Backup)

   Forwarder Information: 2 Forwarders 1 Active

     Config Weight  : 255

     Running Weight : 255

    Forwarder 02

     State          : Listening

     Virtual MAC    : 000f-e2ff-0012 (Learnt)

     Owner ID       : 0000-5e01-1103

     Priority       : 127

     Active         : FE80::2

    Forwarder 03

     State          : Active

     Virtual MAC    : 000f-e2ff-0013 (Owner)

     Owner ID       : 0000-5e01-1105

     Priority       : 255

     Active         : local

   Forwarder Weight Track Information:

     Track Object   : 1          State : Positive   Weight Reduced : 250

以上显示信息表示,Timeout Timer超时后,删除虚拟MAC地址000f-e2ff-0011对应的虚拟转发器,不再转发目的MAC地址为该MAC的报文。

(3)     Device A出现故障后

# 显示Device B上VRRP备份组的详细信息。

[DeviceB] display vrrp ipv6 verbose

 IPv6 Standby Information:

     Run Mode       : Load Balance

     Run Method     : Virtual MAC

 Total number of virtual routers : 1

   Interface Vlan-interface2

     VRID           : 1                    Adver Timer  : 1

     Admin Status   : Up                   State        : Master

     Config Pri     : 110                  Running Pri  : 110

     Preempt Mode   : Yes                  Delay Time   : 500

     Auth Type      : None

     Virtual IP     : FE80::10

                      1::10

     Member IP List : FE80::2 (Local, Master)

                      FE80::3 (Backup)

   Forwarder Information: 2 Forwarders 1 Active

     Config Weight  : 255

     Running Weight : 255

    Forwarder 02

     State          : Active

     Virtual MAC    : 000f-e2ff-0012 (Owner)

     Owner ID       : 0000-5e01-1103

     Priority       : 255

     Active         : local

    Forwarder 03

     State          : Listening

     Virtual MAC    : 000f-e2ff-0013 (Learnt)

     Owner ID       : 0000-5e01-1105

     Priority       : 127

     Active         : FE80::3

   Forwarder Weight Track Information:

     Track Object   : 1          State : Positive   Weight Reduced : 250

以上显示信息表示Device A出现故障后,Device B的优先级高于Device C,将抢占成为Master。

8.5.5  配置文件

·     Device A的配置文件:

#

 vrrp ipv6 mode load-balance

#

 vlan 2 to 3

#

interface Vlan-interface2

ipv6 address fe80::1 link-local

 ipv6 address 1::1 64

undo ipv6 nd ra halt

 vrrp ipv6 vrid 1 virtual-ip fe80::10 link-local

vrrp ipv6 vrid 1 virtual-ip 1::10

 vrrp ipv6 vrid 1 priority 120

 vrrp ipv6 vrid 1 preempt-mode delay 500

 vrrp ipv6 vrid 1 track 1 weight reduced 250

#

interface Vlan-interface3

#

interface HundredGigE1/0/1

 port link-mode bridge

 port access vlan 2

#

interface HundredGigE1/0/2

 port link-mode bridge

 port access vlan 3

#

track 1 interface vlan-interface3

#

·     Device B的配置文件:

#

 vrrp ipv6 mode load-balance

#

 vlan 2 to 3

#

interface Vlan-interface2

ipv6 address fe80::2 link-local

 ipv6 address 1::2 64

undo ipv6 nd ra halt

 vrrp ipv6 vrid 1 virtual-ip fe80::10 link-local

vrrp ipv6 vrid 1 virtual-ip 1::10

 vrrp ipv6 vrid 1 priority 110

 vrrp ipv6 vrid 1 preempt-mode delay 500

 vrrp ipv6 vrid 1 track 1 weight reduced 250

#

interface Vlan-interface3

#

interface HundredGigE1/0/1

 port link-mode bridge

 port access vlan 2

#

interface HundredGigE1/0/2

 port link-mode bridge

 port access vlan 3

#

track 1 interface vlan-interface3

#

·     Device C的配置文件:

#

 vrrp ipv6 mode load-balance

#

 vlan 2 to 3

#

interface Vlan-interface2

ipv6 address fe80::3 link-local

 ipv6 address 1::3 64

undo ipv6 nd ra halt

 vrrp ipv6 vrid 1 virtual-ip fe80::10 link-local

vrrp ipv6 vrid 1 virtual-ip 1::10

 vrrp ipv6 vrid 1 preempt-mode delay 500

 vrrp ipv6 vrid 1 track 1 weight reduced 250

#

interface Vlan-interface3

#

interface HundredGigE1/0/1

 port link-mode bridge

 port access vlan 2

#

interface HundredGigE1/0/2

 port link-mode bridge

 port access vlan 3

#

track 1 interface vlan-interface3

#

9  VRRP备份组+以太网链路聚合配置举例

9.1  组网需求

图7所示,Area A区域的用户(Host A和Host B)所在网络的出口处部署了两台网关设备。网关设备之间通过聚合接口相连。现要求使用VRRP主备备份功能,将这两台设备组成一台虚拟路由器,作为Area A区域用户的缺省网关。具体应用需求如下:

·     在正常情况下,由Device A承担网关功能,转发Area A区域用户发送至外网的流量;

·     当Device A的上行接口出现故障时,由Device B接替Device A承担网关功能;

·     Device A的上行接口故障恢复后,由Device A继续承担网关功能。

·     Device A、Device B与L2switch之间分别创建二层静态链路聚合组,用于增加Device A和Device B到用户之间的带宽,形成冗余,增强可靠性。

·     Device A和Device B之间创建二层静态链路聚合组,用于当Device A的下行接口所在的聚合组Down,用户数据切换到L2switch—>Device B—>Device A链路时,增加Device B与Device A之间带宽,形成冗余,增强可靠性。

图7 VRRP单备份组配置组网图

 

9.2  配置思路

·     为了让Device A成为Master,需要为Device A配置较高的优先级;

·     将VRRP组的抢占模式和监视上行接口状态功能结合使用,可以使Master设备根据上行接口的状态自动调整自身的VRRP优先级,从而使VRRP组内的角色发生转变,实现主备切换;

·     为了避免VRRP备份组中的角色频繁发生变化,可以配置一定的抢占延迟时间。

·     为了避免网关设备(Device A和Device B)与二层交换机形成二层环路,使用STP协议在VRRP备份组中阻塞一个端口。

9.3  使用版本

本举例是R2609版本上进行配置和验证的。

9.4  配置注意事项

·     建议将备份组的虚拟IP地址和备份组中设备下行接口的IP地址配置为同一网段,否则可能导致局域网内的主机无法访问外部网络。

·     VRRP既可以使用VRRPv2版本,也可以使用VRRPv3版本(缺省情况使用VRRPv3)。请确保VRRP备份组中的所有路由器上配置的VRRP版本一致,否则备份组无法正常工作。

·     删除IP地址拥有者上的VRRP备份组,将导致地址冲突。建议先修改配置了备份组的接口的IP地址,再删除该接口上的VRRP备份组,以避免地址冲突。

·     对于同一个VRRP备份组的成员设备,必须保证虚拟路由器的IP地址配置完全一样。

·     用户在配置降低优先级幅度时,需要确保降低后的优先级比备份组内其他设备的优先级要低,确保备份组内有其他设备被选为Master。

·     聚合链路的两端应配置相同的聚合模式。

·     用户删除聚合接口时,系统将自动删除对应的聚合组,且该聚合组内的所有成员端口将全部离开该聚合组。

·     配置了下列功能的端口将不能加入二层聚合组:AC与VSI关联(请参见“VXLAN配置指导”中的“VXLAN”)。

9.5  配置步骤

(1)     Device A

# 创建二层聚合接口1。

<DeviceA> system-view

[DeviceA] interface bridge-aggregation 1

[DeviceA-Bridge-Aggregation1] undo shutdown

[DeviceA-Bridge-Aggregation1] quit

# 分别将端口HundredGigE1/0/3和HundredGigE1/0/4加入到聚合组1中。

[DeviceA] interface hundredgige 1/0/3

[DeviceA-HundredGigE1/0/3] undo shutdown

[DeviceA-HundredGigE1/0/3] port link-aggregation group 1

[DeviceA-HundredGigE1/0/3] quit

[DeviceA] interface hundredgige 1/0/4

[DeviceA-HundredGigE1/0/4] undo shutdown

[DeviceA-HundredGigE1/0/4] port link-aggregation group 1

[DeviceA-HundredGigE1/0/4] quit

# 配置二层聚合接口1为Trunk端口,并允许所有的报文通过。

[DeviceA] interface bridge-aggregation 1

[DeviceA-Bridge-Aggregation1] port link-type trunk

[DeviceA-Bridge-Aggregation1] port trunk permit vlan all

[DeviceA-Bridge-Aggregation1] quit

# 创建二层聚合接口2。

[DeviceA] interface bridge-aggregation 2

[DeviceA-Bridge-Aggregation2] undo shutdown

[DeviceA-Bridge-Aggregation2] quit

# 分别将端口HundredGigE1/0/1和HundredGigE1/0/2加入到聚合组2中。

[DeviceA] interface hundredgige 1/0/1

[DeviceA-HundredGigE1/0/1] port link-aggregation group 2

[DeviceA-HundredGigE1/0/1] quit

[DeviceA] interface hundredgige 1/0/2

[DeviceA-HundredGigE1/0/2] port link-aggregation group 2

[DeviceA-HundredGigE1/0/2] quit

# 创建VLAN 2,并配置IP地址。

[DeviceA] vlan 2

[DeviceA-vlan2] quit

[DeviceA] interface vlan-interface 2

[DeviceA-Vlan-interface2] undo shutdown

[DeviceA-Vlan-interface2] ip address 192.168.0.2 24

[DeviceA-Vlan-interface2] quit

# 配置二层聚合接口2为Access端口,加入VLAN 2。

[DeviceA] interface bridge-aggregation 2

[DeviceA-Bridge-Aggregation2] port link-type access

[DeviceA-Bridge-Aggregation2] port access vlan 2

[DeviceA-Bridge-Aggregation2] quit

# 创建VRRP备份组1,并配置备份组1的虚拟IP地址为192.168.0.1。

[DeviceA] interface vlan-interface 2

[DeviceA-Vlan-interface2] vrrp vrid 1 virtual-ip 192.168.0.1

# 设置Device A在VRRP备份组1中的优先级为110,高于Device B的优先级100,以保证Device A成为Master负责转发流量。

[DeviceA-Vlan-interface2] vrrp vrid 1 priority 110

# 设置Device A工作在抢占方式,以保证Device A故障恢复后,能再次抢占成为Master,即只要Device A正常工作,就由Device A负责转发流量。为了避免频繁地进行状态切换,配置抢占延迟时间为500厘秒。

[DeviceA-Vlan-interface2] vrrp vrid 1 preempt-mode delay 500

[DeviceA-Vlan-interface2] quit

# 创建和上行接口HundredGigE1/0/10关联的Track项1。

[DeviceA] interface hundredgige 1/0/10

[DeviceA-HundredGigE1/0/10] undo shutdown

[DeviceA-HundredGigE1/0/10] quit

[DeviceA] track 1 interface hundredgige 1/0/10

# 配置监视Track项1,Track项的状态为Negative时,Device A在VRRP备份组中的优先级降低的数值为50。

[DeviceA] interface vlan-interface 2

[DeviceA-Vlan-interface2] vrrp vrid 1 track 1 priority reduced 50

[DeviceA-Vlan-interface2] quit

# 配置MSTP,并将Device A作为MSI 1的根桥。

[DeviceA] stp region-configuration

[DeviceA-mst-region] region-name vrrp

[DeviceA-mst-region] instance 1 vlan 2

[DeviceA-mst-region] active region-configuration

[DeviceA-mst-region] quit

[DeviceA] stp instance 1 root primary

[DeviceA] stp global enable

(2)     Device B的配置

# 创建二层聚合接口1。

<DeviceB> system-view

[DeviceB] interface bridge-aggregation 1

[DeviceB-Bridge-Aggregation1] undo shutdown

[DeviceB-Bridge-Aggregation1] quit

# 分别将端口HundredGigE1/0/3和HundredGigE1/0/4加入到聚合组1中。

[DeviceB] interface hundredgige 1/0/3

[DeviceB-HundredGigE1/0/3] undo shutdown

[DeviceB-HundredGigE1/0/3] port link-aggregation group 1

[DeviceB-HundredGigE1/0/3] quit

[DeviceB] interface hundredgige 1/0/4

[DeviceB-HundredGigE1/0/4] undo shutdown

[DeviceB-HundredGigE1/0/4] port link-aggregation group 1

[DeviceB-HundredGigE1/0/4] quit

# 配置二层聚合接口1为Trunk端口,并允许所有的报文通过。

[DeviceB] interface bridge-aggregation 1

[DeviceB-Bridge-Aggregation1] port link-type trunk

[DeviceB-Bridge-Aggregation1] port trunk permit vlan all

[DeviceB-Bridge-Aggregation1] quit

# 创建二层聚合接口3。

[DeviceB] interface bridge-aggregation 3

[DeviceB-Bridge-Aggregation3] undo shutdown

[DeviceB-Bridge-Aggregation3] quit

# 分别将端口HundredGigE1/0/1和HundredGigE1/0/2加入到聚合组3中。

[DeviceB] interface hundredgige 1/0/1

[DeviceB-HundredGigE1/0/1] undo shutdown

[DeviceB-HundredGigE1/0/1] port link-aggregation group 3

[DeviceB-HundredGigE1/0/1] quit

[DeviceB] interface hundredgige 1/0/2

[DeviceB-HundredGigE1/0/2] undo shutdown

[DeviceB-HundredGigE1/0/2] port link-aggregation group 3

[DeviceB-HundredGigE1/0/2] quit

# 创建VLAN 2,并配置IP地址。

[DeviceB] vlan 2

[DeviceB-vlan2] quit

[DeviceB] interface vlan-interface 2

[DeviceB-Vlan-interface2] undo shutdown

[DeviceB-Vlan-interface2] ip address 192.168.0.3 24

[DeviceB-Vlan-interface2] quit

# 配置二层聚合接口3为Access端口,加入VLAN 2。

[DeviceB] interface bridge-aggregation 3

[DeviceB-Bridge-Aggregation3] port link-type access

[DeviceB-Bridge-Aggregation3] port access vlan 2

[DeviceB-Bridge-Aggregation3] quit

# 创建VRRP备份组1,并配置备份组1的虚拟IP地址为192.168.0.1。

[DeviceB] interface vlan-interface 2

[DeviceB-Vlan-interface2] vrrp vrid 1 virtual-ip 192.168.0.1

# 设置Device B工作在抢占方式,抢占延迟时间为500厘秒。

[DeviceB-Vlan-interface2] vrrp vrid 1 preempt-mode delay 500

[DeviceB-Vlan-interface2] quit

# 配置MSTP,并全局使能STP。

[DeviceB] stp region-configuration

[DeviceB-mst-region] region-name vrrp

[DeviceB-mst-region] instance 1 vlan 2

[DeviceB-mst-region] active region-configuration

[DeviceB-mst-region] quit

[DeviceB] stp instance 1 root secondary

[DeviceB] stp global enable

(3)     L2switch的配置

# 创建二层聚合接口2。

<L2switch> system-view

[L2switch] interface bridge-aggregation 2

[L2switch-Bridge-Aggregation2] undo shutdown

[L2switch-Bridge-Aggregation2] quit

# 分别将端口HundredGigE1/0/3和HundredGigE1/0/4加入到聚合组2中。

[L2switch] interface hundredgige 1/0/3

[L2switch-HundredGigE1/0/3] undo shutdown

[L2switch-HundredGigE1/0/3] port link-aggregation group 2

[L2switch-HundredGigE1/0/3] quit

[L2switch] interface hundredgige 1/0/4

[L2switch-HundredGigE1/0/4] undo shutdown

[L2switch-HundredGigE1/0/4] port link-aggregation group 2

[L2switch-HundredGigE1/0/4] quit

# 创建二层聚合接口3。

[L2switch] interface bridge-aggregation 3

[L2switch-Bridge-Aggregation3] undo shutdown

[L2switch-Bridge-Aggregation3] quit

# 分别将端口HundredGigE1/0/5和HundredGigE1/0/6加入到聚合组3中。

[L2switch] interface hundredgige 1/0/5

[L2switch-HundredGigE1/0/5] undo shutdown

[L2switch-HundredGigE1/0/5] port link-aggregation group 3

[L2switch-HundredGigE1/0/5] quit

[L2switch] interface hundredgige 1/0/6

[L2switch-HundredGigE1/0/6] undo shutdown

[L2switch-HundredGigE1/0/6] port link-aggregation group 3

[L2switch-HundredGigE1/0/6] quit

# 创建VLAN 2,并将聚合组2和3加入该VLAN。

[L2switch] vlan 2

[L2switch-vlan2] quit

[L2switch] interface bridge-aggregation 2

[L2switch-Bridge-Aggregation2] port access vlan 2

[L2switch-Bridge-Aggregation2] quit

[L2switch] interface bridge-aggregation 3

[L2switch-Bridge-Aggregation3] port access vlan 2

[L2switch-Bridge-Aggregation3] quit

# 配置MSTP,将VLAN2映射到MSI 1,激活MSTI配置,全局使能STP协议。

[L2switch] stp region-configuration

[L2switch-mst-region] region-name vrrp

[L2switch-mst-region] instance 1 vlan 2

[L2switch-mst-region] active region-configuration

[L2switch-mst-region] quit

[L2switch] stp global enable

9.6  验证配置

(1)     配置完成后,用户主机可以ping通外网,如Host A可以ping通外网IP地址为20.1.1.1的主机。

Microsoft Windows [Version 6.1.7601]

Copyright (c) 2009 Microsoft Corporation.  All rights reserved.

 

C:\Users\hostA>ping 20.1.1.1

 

Pinging 20.1.1.1 with 32 bytes of data:

Reply from 20.1.1.1: bytes=32 time<1ms TTL=128

Reply from 20.1.1.1: bytes=32 time<1ms TTL=128

Reply from 20.1.1.1: bytes=32 time<1ms TTL=128

Reply from 20.1.1.1: bytes=32 time<1ms TTL=128

 

Ping statistics for 20.1.1.1:

    Packets: Sent = 4, Received = 4, Lost = 0 (0% loss),

Approximate round trip times in milli-seconds:

    Minimum = 0ms, Maximum = 0ms, Average = 0ms

(2)     配置完成后,使用display vrrp verbose命令查看VRRP组状态

# 显示Device A上VRRP备份组的详细信息。

[DeviceA] display vrrp verbose

IPv4 Virtual Router Information:

 Running mode      : Standard

 Total number of virtual routers : 1

   Interface Vlan-interface2

     VRID           : 1                   Adver Timer  : 100

     Admin Status   : Up                  State        : Master

     Config Pri     : 110                 Running Pri  : 110

     Preempt Mode   : Yes                 Delay Time   : 500

     Auth Type      : None

     Virtual IP     : 192.168.0.1

     Virtual MAC    : 0000-5e00-0101

     Master IP      : 192.168.0.2

   VRRP Track Information:

     Track Object   : 1                   State : Positive   Pri Reduced : 50

# 显示Device B上VRRP备份组的详细信息。

[DeviceB] display vrrp verbose

IPv4 Virtual Router Information:

 Running mode      : Standard

 Total number of virtual routers : 1

   Interface Vlan-interface2

     VRID           : 1                   Adver Timer  : 100

     Admin Status   : Up                  State        : Backup

     Config Pri     : 100                 Running Pri  : 100

     Preempt Mode   : Yes                 Delay Time   : 500

     Become Master  : 2950ms left

     Auth Type      : None

     Virtual IP     : 192.168.0.1

     Master IP      : 192.168.0.2

以上显示信息表示在VRRP备份组1中Device A为Master,Device B为Backup。用户流量由Device A来转发。

(3)     使用display interface Bridge-Aggregation brief查看静态二层聚合组的情况

# 显示Device A上静态聚合组的信息。

[DeviceA] display interface Bridge-Aggregation brief

Brief information on interfaces in bridge mode:

Link: ADM - administratively down; Stby - standby

Speed: (a) - auto

Duplex: (a)/A - auto; H - half; F - full

Type: A - access; T - trunk; H - hybrid

Interface            Link Speed   Duplex Type PVID Description

BAGG1                UP   2G(a)   F(a)   A    1

BAGG2                UP   2G(a)   F(a)   A    2

# 显示Device B上静态聚合组的信息。

[DeviceB] display interface Bridge-Aggregation brief

Brief information on interfaces in bridge mode:

Link: ADM - administratively down; Stby - standby

Speed: (a) - auto

Duplex: (a)/A - auto; H - half; F - full

Type: A - access; T - trunk; H - hybrid

Interface            Link Speed   Duplex Type PVID Description

BAGG1                UP   2G(a)   F(a)   A    1

BAGG3                UP   2G(a)   F(a)   A    2

# 显示L2switch上静态聚合组的信息。

[L2switch] display interface Bridge-Aggregation brief

Brief information on interfaces in bridge mode:

Link: ADM - administratively down; Stby - standby

Speed: (a) - auto

Duplex: (a)/A - auto; H - half; F - full

Type: A - access; T - trunk; H - hybrid

Interface            Link Speed   Duplex Type PVID Description

BAGG2                UP   2G(a)   F(a)   A    2

BAGG3                UP   2G(a)   F(a)   A    2

以上信息表明静态聚合组123 speed都为2GDevice ADevice BL2switch之间带宽都增加了一倍,并且也增加了可靠性。

(4)     Device A的上行接口(Ten-GigabitEthernet1/0/10)出现故障后,用户主机可以ping通外网,如Host A可以ping通外网IP地址为20.1.1.1的主机。

Microsoft Windows [Version 6.1.7601]

Copyright (c) 2009 Microsoft Corporation.  All rights reserved.

 

C:\Users\hostA>ping 20.1.1.1

 

Pinging 20.1.1.1 with 32 bytes of data:

Reply from 20.1.1.1: bytes=32 time<1ms TTL=128

Reply from 20.1.1.1: bytes=32 time<1ms TTL=128

Reply from 20.1.1.1: bytes=32 time<1ms TTL=128

Reply from 20.1.1.1: bytes=32 time<1ms TTL=128

 

Ping statistics for 20.1.1.1:

    Packets: Sent = 4, Received = 4, Lost = 0 (0% loss),

Approximate round trip times in milli-seconds:

    Minimum = 0ms, Maximum = 0ms, Average = 0ms

(5)     Device A的上行接口(HundredGigE1/0/10)出现故障后,使用display vrrp verbose命令查看VRRP组状态

# 显示Device A上VRRP备份组的详细信息。

[DeviceA] display vrrp verbose

IPv4 Virtual Router Information:

 Running mode      : Standard

 Total number of virtual routers : 1

   Interface Vlan-interface2

     VRID           : 1                   Adver Timer  : 100

     Admin Status   : Up                  State        : Backup

     Config Pri     : 110                 Running Pri  : 60

     Preempt Mode   : Yes                 Delay Time   : 500

     Become Master  : 3350ms left

     Auth Type      : None

     Virtual IP     : 192.168.0.1

     Master IP      : 192.168.0.3

   VRRP Track Information:

     Track Object   : 1                   State : Negative   Pri Reduced : 50

# 显示Device B上VRRP备份组的详细信息。

[DeviceB] display vrrp verbose

IPv4 Virtual Router Information:

 Running mode      : Standard

 Total number of virtual routers : 1

   Interface Vlan-interface2

     VRID           : 1                   Adver Timer  : 100

     Admin Status   : Up                  State        : Master

     Config Pri     : 100                 Running Pri  : 100

     Preempt Mode   : Yes                 Delay Time   : 500

     Auth Type      : None

     Virtual IP     : 192.168.0.1

     Virtual MAC    : 0000-5e00-0101

     Master IP      : 192.168.0.3

以上显示信息表示Device A的上行接口出现故障后,Device A的优先级降低50,低于Device B,Device B抢占成为Master,用户流量由Device B进行转发。

(6)     当Device A的上行接口故障恢复后,使用display vrrp verbose命令查看VRRP组状态

# 显示Device A上VRRP备份组的详细信息。

[DeviceA] display vrrp verbose

IPv4 Virtual Router Information:

 Running mode      : Standard

 Total number of virtual routers : 1

   Interface Vlan-interface2

     VRID           : 1                   Adver Timer  : 100

     Admin Status   : Up                  State        : Master

     Config Pri     : 110                 Running Pri  : 110

     Preempt Mode   : Yes                 Delay Time   : 500

     Auth Type      : None

     Virtual IP     : 192.168.0.1

     Virtual MAC    : 0000-5e00-0101

     Master IP      : 192.168.0.2

   VRRP Track Information:

     Track Object   : 1                   State : Positive   Pri Reduced : 50

# 显示Device B上VRRP备份组的详细信息。

[DeviceB] display vrrp verbose

IPv4 Virtual Router Information:

 Running mode      : Standard

 Total number of virtual routers : 1

   Interface Vlan-interface2

     VRID           : 1                   Adver Timer  : 100

     Admin Status   : Up                  State        : Backup

     Config Pri     : 100                 Running Pri  : 100

     Preempt Mode   : Yes                 Delay Time   : 500

     Become Master  : 2950ms left

     Auth Type      : None

     Virtual IP     : 192.168.0.1

     Master IP      : 192.168.0.2

以上显示信息表示Device A的上行接口故障恢复后,Device A重新抢占成为Master,Device B为Backup。用户流量由Device A来转发。

9.7  配置文件

·     Device A

#

 sysname DeviceA

#

vlan 2

#

stp region-configuration

 region-name vrrp

 instance 1 vlan 2

 active region-configuration

#

 stp instance 1 root primary

stp global enable

#

interface Bridge-Aggregation1

 port link-type trunk

 port trunk permit vlan all

#

interface Bridge-Aggregation2

 port access vlan 2

#

interface Vlan-interface2

 ip address 192.168.0.2 255.255.255.0

 vrrp vrid 1 virtual-ip 192.168.0.1

 vrrp vrid 1 priority 110

 vrrp vrid 1 preempt-mode delay 500

 vrrp vrid 1 track 1 priority reduced 50

#

interface HundredGigE1/0/1

 port link-mode bridge

 port access vlan 2

 port link-aggregation group 2

#

interface HundredGigE1/0/2

 port link-mode bridge

 port access vlan 2

 port link-aggregation group 2

#

interface HundredGigE1/0/3

 port link-mode bridge

 port link-type trunk

 port trunk permit vlan all

 port link-aggregation group 1

#

interface HundredGigE1/0/4

  port link-mode bridge

 port link-type trunk

 port trunk permit vlan all

 port link-aggregation group 1

#

track 1 interface HundredGigE1/0/10

#

·     Device B

#

 sysname DeviceB

#

vlan 2

#

stp region-configuration

 region-name vrrp

 instance 1 vlan 2

 active region-configuration

#

 stp instance 1 root secondary

stp global enable

#

interface Bridge-Aggregation1

 port link-type trunk

 port trunk permit vlan all

#

interface Bridge-Aggregation2

 port access vlan 2

#

interface Vlan-interface2

 ip address 192.168.0.3 255.255.255.0

 vrrp vrid 1 virtual-ip 192.168.0.1

vrrp vrid 1 preempt-mode delay 500

#

interface HundredGigE1/0/1

 port link-mode bridge

 port access vlan 2

 port link-aggregation group 3

#

interface HundredGigE1/0/2

 port link-mode bridge

 port access vlan 2

 port link-aggregation group 3

#

interface HundredGigE1/0/3

 port link-mode bridge

 port link-type trunk

 port trunk permit vlan all

 port link-aggregation group 1

#

interface HundredGigE1/0/4

  port link-mode bridge

 port link-type trunk

 port trunk permit vlan all

 port link-aggregation group 1

#

·     L2switch

#

 sysname L2switch

#

vlan 2

#

stp region-configuration

 region-name vrrp

 instance 1 vlan 2

 active region-configuration

#

 stp global enable

#

interface Bridge-Aggregation2

 port access vlan 2

#

interface Bridge-Aggregation3

 port access vlan 2

#

interface HundredGigE1/0/3

 port link-mode bridge

 port access vlan 2

 port link-aggregation group 2

#

interface HundredGigE1/0/2

 port link-mode bridge

 port access vlan 2

 port link-aggregation group 2

#

interface HundredGigE1/0/4

 port link-mode bridge

 port access vlan 2

 port link-aggregation group 2

#

interface HundredGigE1/0/5

 port link-mode bridge

 port access vlan 2

 port link-aggregation group 3

#

interface HundredGigE1/0/6

 port link-mode bridge

 port access vlan 2

 port link-aggregation group 3

#

10  相关资料

·     H3C S12500X-AF系列交换机二层技术-以太网配置指导-R26xx

·     H3C S12500X-AF系列交换机二层技术-以太网命令参考-R26xx

·     H3C S12500X-AF系列交换机可靠性配置指导-R26xx

·     H3C S12500X-AF系列交换机可靠性命令指导-R26xx

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