Huawei AR1200 series Configuration Manual page 78

Huawei AR1200 Series Enterprise Routers
Configuration Guide - VPN
Context
Perform the following steps on the PE that is configured with VPN instances.
Procedure
Step 1 Run:
system-view
The system view is displayed.
Step 2 Run:
ip vpn-instance vpn-instance-name
The VPN instance view is displayed.
Step 3 Run:
ipv4-family
The IPv4 address family is enabled for the VPN instance and the VPN instance IPv4 address
family view is displayed.
Step 4 Run:
route-distinguisher route-distinguisher
An RD is configured for the VPN instance IPv4 address family.
The VPN instance IPv4 address family takes effect only after an RD is configured for it. The
RDs configured in different VPN instance IPv4 address family views of the same PE must be
different.
Step 5 Run:
vpn-target vpn-target &<1-8> [ both | export-extcommunity | import-extcommunity ]
The VPN target extended community attribute for the VPN instance is created.
The VPN target is the extended community attribute of the Border Gateway Protocol (BGP). It
controls the import and export of VPN routes. You can configure a maximum of 8 VPN targets
with a command.
Step 6 (Optional) Run:
routing-table limit number { alert-percent | simply-alert }
The maximum number of routes of the VPN instance is configured.
You can define the maximum number of routes for a VPN instance to prevent the PE from
importing too many routes from the CE.
Issue 01 (2012-04-20)
NOTE
It is recommended to perform either Step 6 or Step 7.
NOTE
A configured RD cannot be changed or deleted. Delete a VPN instance or disable the VPN instance IPv4
address family before changing or deleting the RD of the VPN instance IPv4 address family.
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3 BGP MPLS IP VPN Configuration
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