Инструкции По Установке для 3com S7906E

 

1-23 

Configuring BGP AS Number Substitution 

Optional 

Configure it as needed 

 

igure MPLS L3VPN: 

VPN instances are used to isolate VPN routes from public network routes. Configuring VPN instances is 

required in all MPLS L3VPN networking schemes. 

In addition, routes of a VPN instance are isolated from those of another. This feature allows VPN 

instances to be used in networking schemes other than MPLS L3VPNs. 

All VPN instance configurations are on PEs. 

This section includes the following configurations: 

z 

z 

Associating a VPN Instance with an Interface 

z 

z 

A VPN instance is associated with a site, rather than a VPN. It is a collection of the VPN membership 

and routing rules of its associated site. 

A VPN instance takes effect only after you configure an RD for it. Before configuring an RD for a VPN 

instance, you can configure no parameters for the instance other than a description. 

A VPN instance description is a piece of descriptive information about the VPN instance. You can use it 

to keep information such as the relationship of the VPN instance with a VPN. 

Follow these steps to create and configure a VPN instance: 

Enter system view 

— 

Create a VPN instance and 
enter VPN instance view 

ip vpn-instance 
vpn-instance-name 

Required 

Configure an RD for the VPN 
instance 

route-distinguisher 
route-distinguisher 

Required 

Configure a description for the 
VPN instance 

description text 

Optional 

 

After creating and configuring a VPN instance, you associate the VPN instance with the interface for 

connecting CEs. Any interface supporting MPLS LDP capability can be associated with a VPN instance. 

For interfaces supporting MPLS LDP capability, refer to MPLS Basics Configuration in the MPLS 

Volume.