H3C Technologies H3C S12500-X Series Switches - Manual (Page 349)

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Step Command Remarks
4. (Optional.) Configure a
description for the VPN
instance.
description text
By default, no description is
configured for a VPN instance.
The description should contain the
VPN instance's related
information, such as its relationship
with a certain VPN.
5. (Optional.) Configure an ID
for the VPN instance.
vpn-id vpn-id
By default, no ID is configured for a
VPN instance.
Associating a VPN instance with an interface
After creating and configuring a VPN instance, associate the VPN instance with the MCE's interface
connected to the site and the interface connected to the PE.
To associate a VPN instance with an interface:
Step Command Remarks
1. Enter system view. system-view N/A
2. Enter interface view.
interface interface-type
interface-number
N/A
3. Associate a VPN instance
with the interface. ip binding vpn-instance
vpn-instance-name
By default, no VPN instance is
associated with an interface.
The ip binding vpn-instance
command clears the IP address of
the interface. Therefore,
re-configure an IP address for the
interface after configuring this
command.
Configuring route related attributes for a VPN instance
VPN routes are controlled and advertised on a PE by using the following process:
1. When a VPN route learned from a CE gets redistributed into BGP, BGP associates it with a route
target extended community attribute list, which is typically the export target attribute of the VPN
instance associated with the CE.
2. The VPN instance determines which routes it can accept and redistribute according to the
import-extcommunity in the route target.
3. The VPN instance determines how to change the route target attributes for routes to be advertised
according to the export-extcommunity in the route target.
To configure route related attributes for a VPN instance:
Step Command Remarks
1. Enter system view. system-view N/A