Table of Contents

1 Smart Link-Monitor Link Configuration Guide· 1-1

Smart Link Configuration Example· 1-1

Network diagram·· 1-1

Network requirements· 1-1

Applicable Product Matrix· 1-1

Configuration procedure· 1-2

Complete Configuration· 1-3

Precautions· 1-3

Implementing Collaboration Between Smart Link and Monitor Link· 1-4

Network diagram·· 1-4

Network requirements· 1-4

Applicable Product Matrix· 1-5

Configuration procedure· 1-5

Complete Configuration· 1-6

Precautions· 1-7

 

Smart Link Configuration Example

Network diagram

Figure 1-1 Network diagram for Smart Link configuration

 

Network requirements

As shown in Figure 1-1, Switch A is an H3C S3600 series Ethernet switch. All Switches in Figure 1-1 support Smart Link.

To enable a remote PC to access the server reliably, perform these configurations on the switches:

1)        Configure the smart link device Switch A as follows:

l          Create a smart link group and assign member ports to the group.

l          Specify the control VLAN for transmitting Flush messages.

2)        Enable the specified ports on Switch C, Switch D, and Switch E to receive and process Flush messages from the control VLAN.

Applicable Product Matrix

Product series	Software version	Hardware version
S5600 series Ethernet switches	Release 1510, Release 1602	All versions
S5100-SI/EI series Ethernet switches	Release 2200, Release 2201	All versions
S3600-SI/EI series Ethernet switches	Release 1510, Release 1602	All versions
S3100-EI series Ethernet switches	Release 2104, Release 2107	All versions
S3100-52P	Release 1500, Release 1602	S3100-52P

 

Configuration procedure

1)        Configure a smart link group on Switch A and configure member ports for it. Enable the function of sending flush messages in Control VLAN 1.

# Enter system view.

<switchA> system-view

# Enter Ethernet port view. Disable STP on Ethernet 1/0/1 and Ethernet 1/0/2.

[SwitchA] interface Ethernet 1/0/1

[SwitchA-Ethernet1/0/1] stp disable

[SwitchA-Ethernet1/0/1] quit

[SwitchA] interface Ethernet 1/0/2

[SwitchA-Ethernet1/0/2] stp disable

# Return to system view.

[SwitchA-Ethernet1/0/2] quit

# Create smart link group 1 and enter the corresponding smart link group view.

[SwitchA] smart-link group 1

# Configure Ethernet 1/0/1 as the master port and Ethernet 1/0/2 as the slave port for smart link group 1.

[SwitchA-smlk-group1] port Ethernet 1/0/1 master

[SwitchA-smlk-group1] port Ethernet 1/0/2 slave

# Configure to send flush messages within VLAN 1.

[SwitchA-smlk-group1] flush enable control-vlan 1

2)        Enable the function of processing flush messages received from VLAN 1 on Switch C.

# Enter system view.

<SwitchC> system-view

# Enable the function of processing flush messages received from VLAN 1 on Ethernet 1/0/2.

<SwitchC> smart-link flush enable control-vlan 1 port Ethernet 1/0/2

3)        Enable the function of processing flush messages received from VLAN 1 on Switch D.

# Enter system view.

<SwitchD> system-view

# Enable the function of processing flush messages received from VLAN 1 on Ethernet 1/0/2.

[SwitchD] smart-link flush enable control-vlan 1 port Ethernet 1/0/2

4)        Enable the function of processing flush messages received from VLAN 1 on Switch E.

# Enter system view.

<SwitchE> system-view

# Enable the function of processing flush messages received from VLAN 1 on Ethernet 1/0/2 and Ethernet 1/0/3.

[SwitchE] smart-link flush enable control-vlan 1 port Ethernet 1/0/2 to Ethernet 1/0/3

Complete Configuration

1)        Configuration on Switch A

#

smart-link group 1

 flush enable control-vlan 1

#

interface Ethernet1/0/1

 stp disable

 port smart-link group 1 master

#

interface Ethernet1/0/2

 stp disable

 port smart-link group 1 slave

2)        Configuration on Switch C

#

interface Ethernet1/0/2

smart-link flush enable control-vlan 1

3)        Configuration on Switch D

#

interface Ethernet1/0/1

smart-link flush enable control-vlan 1

4)        Configuration on Switch E

#

interface Ethernet1/0/2

smart-link flush enable control-vlan 1

#

interface Ethernet1/0/3

smart-link flush enable control-vlan 1

Precautions

l          STP cannot be enabled on the member ports of a smart link group. An STP-enabled port or a link aggregation group with an STP-enabled port cannot serve as a member port for a smart link group.

l          Smart Link is mutually exclusive with remote port mirroring.

l          If you configure the Smart Link function on an Intelligent Resilient Fabric (IRF) enabled device, the Smart Link function will function abnormally. Thus, you are recommended to disable the IRF function when configuring the Smart Link function.

l          When a Combo port operates as a member port of a smart link group, the optical port and the electrical port of the Combo port must not be both engaged with a cable at the same time.

l          When you copy a port, the smart link group member information configured on the port will not be copied to other ports.

l          If a single port is specified as a member of a smart link group, you cannot execute the lacp enable command on this port or add this port into other dynamic link aggregation groups, because these operations will make this port become a link aggregation group member.

l          If no control VLAN is configured for flush message processing, the device will forward received flush messages without processing them.

l          If the control VLAN for receiving flush messages configured on an associated device is different than the one for sending flush messages configured on the corresponding Smart Link device, the device will forward received flush messages without processing them.

l          In the static or manual link aggregation group which serves as a smart link group member, if a member port can process flush messages, this function cannot be synchronized to the other ports in the aggregation group automatically, that is, the other member ports in the aggregation group cannot process flush messages. The function of processing flush messages must be manually configured for each port in the aggregation group.

l          The VLAN configured as a control VLAN to send and receive flush messages must exist. You cannot directly remove the control VLAN. When a dynamic VLAN is configured as the control VLAN for the smart link group, this VLAN will become a static VLAN, and the prompt information is displayed.

Implementing Collaboration Between Smart Link and Monitor Link

Network diagram

Figure 1-2 Network diagram for Monitor Link configuration

 

Network requirements

As shown inFigure 1-2, the PCs access the server and Internet through the switch. Configure Smart Link and Monitor Link to prevent the PCs from failing to access the server and Internet due to uplink link or port failure.

Configure the switches as follows:

l          Create a smart link group on Switch A and Switch B, and specify the control VLAN for transmitting Flush messages.

l          Create a monitor link group on Switch C and Switch D.

l          Enable the specified ports on Switch C, Switch D, and Switch E to receive and process Flush messages from the control VLAN.

Applicable Product Matrix

Product series	Software version	Hardware version
S5600 series Ethernet switches	Release 1510, Release 1602	All versions
S5100-SI/EI series Ethernet switches	Release 2200, Release 2201	All versions
S3600-SI/EI series Ethernet switches	Release 1510, Release 1602	All versions
S3100-EI series Ethernet switches	Release 2104, Release 2107	All versions
S3100-52P	Release 1500, Release 1602	S3100-52P

 

Configuration procedure

1)        Configure Switch A

# Enter system view.

<switchA> system-view

# Enter Ethernet port view. Disable STP on Ethernet1/0/1 and Ethernet1/0/2.

[SwitchA] interface Ethernet 1/0/1

[SwitchA-Ethernet1/0/1] stp disable

[SwitchA-Ethernet1/0/1] quit

[SwitchA] interface Ethernet 1/0/2

[SwitchA-Ethernet1/0/2] stp disable

# Return to system view.

[SwitchA-Ethernet1/0/2] quit

# Create smart link group 1 and enter smart link group view.

[SwitchA] smart-link group 1

# Configure Ethernet 1/0/1 as the master port of the smart link group and Ethernet 1/0/2 as the slave port.

[SwitchA-smlk-group1] port Ethernet 1/0/1 master

[SwitchA-smlk-group1] port Ethernet 1/0/2 slave

# Configure to send flush messages in VLAN 1.

[SwitchA-smlk-group1] flush enable control-vlan 1

2)        Enable Monitor Link on Switch C and Switch D and enable the function of processing flush messages received from VLAN 1. Perform the following configuration on Switch C. The operation procedure on Switch D is the same as that performed on Switch C.

# Enter system view.

<SwitchC> system-view

# Create monitor link group 1 and enter monitor link group view

[SwitchC] monitor-link group 1

# Configure Ethernet 1/0/1 as the uplink port of the monitor link group and Ethernet 1/0/2 and Ethernet 1/0/3 as the downlink ports.

[SwitchC-mtlk-group1] port Ethernet 1/0/1 uplink

[SwitchC-mtlk-group1] port Ethernet 1/0/2 downlink

[SwitchC-mtlk-group1] port Ethernet 1/0/3 downlink

# Return to system view. Enable the function of processing flush messages received from VLAN 1 on Ethernet 1/0/2 and Ethernet 1/0/3.

[SwitchC-mtlk-group1] quit

[SwitchC] smart-link flush enable control-vlan 1 port Ethernet 1/0/2 to Ethernet 1/0/3

3)        Enable the function of processing flush messages received from VLAN 1 on Ethernet 1/0/10 and Ethernet 1/0/11 of Switch E.

# Enter system view.

<SwitchE> system-view

# Enable the function of processing flush messages received from VLAN 1 on Ethernet 1/0/10 and Ethernet 1/0/11.

[SwitchE] smart-link flush enable control-vlan 1 port Ethernet 1/0/10 to Ethernet 1/0/11

Complete Configuration

1)        Configuration on Switch A (configuration on Switch B is similar to that on Switch A)

#

smart-link group 1

 flush enable control-vlan 1

#

interface Ethernet1/0/1

 stp disable

 port smart-link group 1 master

#

interface Ethernet1/0/2

 stp disable

 port smart-link group 1 slave

2)        Configuration on Switch C (configuration on Switch D is similar to that on Switch C)

#

monitor-link group 1

#

interface Ethernet1/0/1

port monitor-link group 1 uplink

#

interface Ethernet1/0/2

smart-link flush enable control-vlan 1

port monitor-link group 1 downlink

#

interface Ethernet1/0/3

smart-link flush enable control-vlan 1

port monitor-link group 1 downlink

3)        Configuration on Switch E

#

interface Ethernet1/0/10

smart-link flush enable control-vlan 1

#

interface Ethernet1/0/11

smart-link flush enable control-vlan 1

Precautions

l          You cannot assign a port or link aggregation group to more than one smart link group or to a smart link group and monitor link group at the same time.

l          Smart Link is mutually exclusive with remote port mirroring.

l          If you configure both the Smart Link and Monitor Link functions on an Intelligent Resilient Fabric (IRF) enabled device, the Smart Link and Monitor Link functions will function abnormally. Thus, you are recommended to disable the IRF function when configuring the Smart Link or Monitor Link function.

l          If a single port is specified as a smart link/monitor link group member, do not use the lacp enable command on the port or add the port to another dynamic link aggregation group because doing so will cause the port to become an aggregation group member.

l          Using the copy command on a port does not copy the smart link/monitor link group member information configured on the port to any other port.