Command Manual – MPLS L3VPN
H3C S9500 Series Routing Switches
Chapter 1 MPLS L3VPN Configuration Commands
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Note:
z
No RD is configured by default; you must configure an RD for each VPN instance.
z
A VPN instance takes effect only after you configure an RD for it.
z
Once you configure an RD for a VPN, you cannot remove the association.
z
You cannot change an RD directly; you can only delete the VPN instance, and then
re-create the VPN instance and re-configure a new RD.
Examples
# Configure the RD of VPN instance vpn1.
<Sysname> system-view
[Sysname] ip vpn-instance vpn1
[Sysname-vpn-instance-vpn1] route-distinguisher 22:1
1.1.52 route-tag
Syntax
route-tag
tag-value
undo route-tag
View
OSPF view
Default Level
2: System level
Parameters
tag-value
: Tag for identifying injected VPN routes.
Description
Use the
route-tag
command to configure the tag for identifying injected VPN routes.
Use the
undo route-tag
command to restore the default.
The first two octets of the default tag is always 0xD000, while the last two octets is the
AS number of the local BGP. For example, if the local BGP AS number is 100, the
default tag is 3489661028 in decimal.
An OSPF instance-related VPN instance on a PE is usually configured with a VPN
route tag, which must be included in Type 5/7 LSAs. PEs in the same AS are
recommended to have the same route tag. The route tag is local significant and can be
configured and take effect on only PEs receiving BGP routes and generating OSPF