Route-Distinguisher; Routing-Table Limit - H3C S5820X Series Command Reference Manual

route-distinguisher

Use route-distinguisher to configure an RD for a VPN instance.
Syntax
route-distinguisher route-distinguisher
Views
VPN instance view
Default command level
2: System level
Parameters
route-distinguisher: Specifies the route distinguisher (RD) for the VPN instance, a string of 3 to 21
characters in one of the following formats:
16-bit AS number:32-bit user-defined number. For example, 101:3.
•
• 32-bit IP address:16-bit user-defined number. For example, 192.168.122.15:1.
32-bit AS number:16-bit user-defined number, where the minimum value of the AS number is 65536.
•
For example, 65536:1.
Usage guidelines
An RD is used to create the routing and forwarding table of a VPN. By prefixing an RD to an IPv4 prefix,
you make the VPN IPv4 prefix unique globally.
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, re-create the VPN instance,
and then reconfigure 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

routing-table limit

Use routing-table limit to limit the maximum number of routes in a VPN instance or an IPv4 VPN,
preventing too many routes from being accepted by an MCE.
Use undo routing-table limit to restore the default.
Syntax
routing-table limit number { warn-threshold | simply-alert }
undo routing-table limit
Default
No limit is configured.
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