H3C S3100 Series Ethernet Switches Operation Manual (For Soliton)(V1.02)

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05-Management VLAN Operation
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Chapter 1  Management VLAN Configuration

1.1  Introduction to Management VLAN

1.1.1  Management VLAN

To manage an Ethernet switch remotely through Telnet or the built-in Web server, the switch need to be assigned an IP address, and make sure that a route exists between the user and the switch. As for an H3C series Layer 2 Ethernet switch, only the management VLAN interface can be assigned an IP address.

The management VLAN interface of a switch can obtain an IP address in one of the following three ways:

l           Through the command used to configure IP address

l           Through BOOTP (In this case, the switch operates as a BOOTP client.)

l           Through dynamic host configuration protocol (DHCP) (In this case, the switch operates as a DHCP client)

The three ways of obtaining an IP address cannot be configured at the same time. That is, the latest IP address obtained causes the previously IP address to be released. For example, if you assign an IP address to a VLAN interface by using the corresponding commands and then apply for another IP address through BOOTP (using the ip address bootp-alloc command), the former IP address will be released, and the final IP address of the VLAN interface is the one obtained through BOOTP.

 

&  Note:

For details of DHCP, refer to the DHCP module.

 

1.1.2  Static Route

A static route is configured manually by an administrator. You can make a network with relatively simple topology to operate properly by simply configuring static routes for it. Configuring and using static routes wisely helps to improve network performance and can guarantee bandwidth for important applications.

The disadvantages of static route lie in that: When a fault occurs or the network topology changes, static routes may become unreachable, which in turn results in network failures. In this case, manual configurations are needed to recover the network.

1.1.3  Default Route

The switch uses the default route when it fails to find a matching entry in the routing table:

l           If the destination address of a packet fails to match any entry in the routing table, the switch uses the default route;

l           If no default route exists and the destination address of the packet is not in the routing table, the packet is discarded, and an ICMP destination unreachable message is returned to the source.

The default route can be configured through a static route and exists in the routing table as a route destined to the network 0.0.0.0 (with the mask 0.0.0.0).

1.2  Management VLAN Configuration

1.2.1  Prerequisites

Before configuring the management VLAN, make sure the VLAN operating as the management VLAN exists. If VLAN 1 (the default VLAN) is the management VLAN, just go ahead.

1.2.2  Configuring the Management VLAN

Table 1-1 Configure the management VLAN

Operation

Command

Remarks

Enter system view

system-view

Configure a specified VLAN to be the management VLAN

management-vlan vlan-id

Required

By default, VLAN 1 operates as the management VLAN.

Create the management VLAN interface and enter the corresponding VLAN interface view

interface vlan-interface vlan-id

Required

Assign an IP address to the management VLAN interface

ip address ip-address mask

Required

By default, no IP address is assigned to the management VLAN interface.

Configure a static route

ip route-static ip-address { mask | mask-length } { interface-type interface-number | next-hop } [ preference preference-value ] [ reject | blackhole ] [ description text ]

Optional

 

  Caution:

l      To create the VLAN interface for the management VLAN on a switch operating as the management device in a cluster, make sure that the management VLAN ID is consistent with the cluster management VLAN ID configured with the management-vlan vlan-id command. Otherwise, the configuration fails. Refer to the Cluster Operation Manual for detailed introduction to the cluster.

l      Refer to the VLAN module for detailed introduction to VLAN interfaces.

 

1.2.3  Configuration Example

I. Network requirements

For a user to manage Switch A remotely through Telnet, these requirements are to be met: Switch A has an IP address, and the remote Telnet user is reachable.

You need to configure the switch as follows:

l           Assigning an IP address to the management VLAN interface on Switch A

l           Configuring the default route

II. Network diagram

Figure 1-1 Network diagram for management VLAN configuration

III. Configuration procedure

 

&  Note:

Perform the following configurations after the current user logs in to Switch A through the Console port.

 

# Enter system view.

<SwitchA> system-view

# Create VLAN 10 and configure VLAN 10 as the management VLAN.

[SwitchA] vlan 10

[SwitchA-vlan10] quit

[SwitchA] management-vlan 10

# Create the VLAN 10 interface and enter VLAN interface view.

[SwitchA] interface vlan-interface 10

# Configure the IP address of VLAN 10 interface as 1.1.1.1/24.

[SwitchA-Vlan-interface10] ip address 1.1.1.1 255.255.255.0

[SwitchA-Vlan-interface10] quit

# Configure the default route.

[SwitchA] ip route-static 0.0.0.0 0.0.0.0 1.1.1.2

1.3  Displaying and Maintaining management VLAN configuration

Table 1-2 Displaying and Maintaining management VLAN configuration

Operation

Command

Remarks

Display the IP-related information about a management VLAN interface

display ip interface [ Vlan-interface vlan-id ]

Optional

Available in any view.

Display brief configuration information about a management VLAN interface

display ip interface brief [ Vlan-interface [ vlan-id ] ]

Display the information about a management VLAN interface

display interface Vlan-interface [ vlan-id ]

Display summary information about the routing table

display ip routing-table [ | { begin | exclude | include } regular-expression ]

Display detailed information about the routing table

display ip routing-table verbose

Display the routes leading to a specified IP address

display ip routing-table ip-address [ mask ] [ longer-match ] [ verbose ]

Display the routes leading to a specified IP address range

display ip routing-table ip-address1 mask1 ip-address2 mask2 [ verbose ]

Display the routing information of the specified protocol

display ip routing-table protocol protocol [ inactive | verbose ]

Display the routes that match a specified basic access control list (ACL)

display ip routing-table acl acl-number [ verbose ]

Display the routing table in a tree structure

display ip routing-table radix

Display the statistics on the routing table

display ip routing-table statistics

Clear statistics about a routing table

reset ip routing-table statistics protocol { all | protocol }

Use the reset command in user view

Delete all static routes

delete static-routes all

Use the delete command in system view.

 

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