3Com MSR 50 manual Route-tag, Instance, Then re-create the VPN instance and re-configure a new RD

	1713
	■ 32-bit IP address: 16-bit user-defined number. For example, 192.168.122.15:1.
Description	Use the route-distinguishercommand to configure a route distinguisher (RD)
	for a VPN instance.
	An RD is used to create the routing and forwarding table of a VPN. By prefixing an
	RD to an IPv4 prefix, you get a VPN IPv4 prefix unique globally.
n	■ No RD is configured by default; you must configure an RD for each VPN
	instance.
	■ A VPN instance takes effect only after you configure an RD for it.
	■ Once you configure an RD for a VPN, you cannot remove the association.
	■ 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.
Example	# Configure the RD of VPN instance vpn1.
	<Sysname> system-view
	[Sysname] ip vpn-instance vpn1
	[Sysname-vpn-instance-vpn1] route-distinguisher 22:1

route-tag

Syntax route-tag tag-value

undo route-tag

View OSPF view

Parameter tag-value: Tag for identifying injected VPN routes, in the range 0 to 4294967295.

Description Use the route-tagcommand to configure the tag for identifying injected VPN routes.

Use the undo route-tagcommand 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 LSAs; it is not transferred in any BGP extended community attribute. Different OSPF processes can have the same route tag.

Tags configured with different commands have different priorities:

■A tag configured with the import-routecommand has the highest priority.