3com S7906E Guide De Référence

 

1-26 

route-distinguisher route-distinguisher 

MPLS L2VPN view  

2: System level 

route-distinguisher: Specifies the route distinguisher (RD) in the format of nn:nn or IP-address:nn. It can 

be a string of 3 to 21 characters. 

An RD can be in either of the following formats: 

z 

16-bit AS number:32-bit user-defined number. For example, 101:3. 

z 

32-bit IP address:16-bit user-defined number. For example, 192.168.122.15:1. 

Use the route-distinguisher command to configure an RD for the VPN.  

Different VPNs on a PE must have different RDs, while a VPN can have the same or different RDs on 

different PEs. 

 

z 

You cannot change an RD directly; you can only delete the VPN and then re-create the VPN using 

the new RD. 

z 

No RD is configured by default; you must configure an RD for each VPN. A VPN takes effect only 

when it is configured with an RD.  

z 

Once you configure an RD for a VPN, you cannot remove the association between the RD and the 

VPN. 

 

# Configure the RD of a VPN. 

<Sysname> system-view 

[Sysname] mpls l2vpn vpn1 encapsulation ethernet 

[Sysname-mpls-l2vpn-vpn1] route-distinguisher 300:1 

vpn-target vpn-target&<1-16> [ both | export-extcommunity | import-extcommunity ] 

undo vpn-target { all | { vpn-target&<1-16> [ both | export-extcommunity | import-extcommunity ] }