H3C S9500 Series Operation Manual page 580

Operation Manual – MPLS
H3C S9500 Series Routing Switches
By default, the peer group is configured as internal. When BGP mode is used for
PE-CE route switching, they often belong to different ASs, so you should configure
EBGP peer as external.
Step 2: Configure AS number for a specific neighbor and add group member to a peer
group
When EBGP mode is used for PE-CE route switching, you should configure AS number
for a specific neighbor for every CE VPN-instance.
Perform the following configuration in VPN instance address family view.
Table 3-17 Configure AS number for a specific neighbor
Configure AS number for
a specific neighbor
Delete the AS number of a
specific neighbor
Step 3: Activate peer (group)
By default, BGP neighbor is active while MBGP neighbor is inactive. You should
activate MBGP neighbor in VPNv4 sub-address family view.
Perform the following configuration in VPNv4 sub-address family view.
Table 3-18 Activate/deactivate peer (group)
Activate the peer (group)
Deactivate the peer (group)
Step 4: Configure MBGP to import VPN route of direct-connect CE
To advertise correct VPN route over public network to other PEs with which BGP
adjacency has been created, a PE must import the VPN routing information of the
direct-connect CE into its MBGP routing table.
For example, if a static route is used between PE and CE, PE must import a static route
in VPN-instance address family sub-view of MBGP (import-route static). If RIP is run
between PE and CE, PE must import an RIP route in VPN-instance view of MBGP
(import-route rip). If BGP is run between PE and CE, MBGP imports a direct-connect
route.
Perform the following configuration in VPN instance address family sub-view.
Operation
peer
group-name ] } as-number as-number
undo peer { group-name | [peer-address group
group-name ] } as-number as-number]
Operation
Chapter 3 BGP/MPLS VPN Configuration
Command
{ group-name |
peer group-name enable
undo peer group-name enable
3-20
group
[ peer-address
Command