3Com S7902E Command Reference Manual - page 1609
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route-distinguisher (MPLS L2VPN view)
Syntax
route-distinguisher route-distinguisher
View
MPLS L2VPN view
Default Level
2: System level
Parameters
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.
Description
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.
Examples
# Configure the RD of a VPN.
[Sysname] mpls l2vpn vpn1 encapsulation ethernet
[Sysname-mpls-l2vpn-vpn1] route-distinguisher 300:1
vpn-target (MPLS L2VPN view)
Syntax
vpn-target vpn-target
& [
both
|
export-extcommunity
|
import-extcommunity
]
undo vpn-target
{
all
| {
vpn-target
& [
both
|
export-extcommunity
|
import-extcommunity
] }