Configuring Route Exchange Between a PE and a CE
The routing protocol running between a PE and a CE can be BGP or IGP. A static route (including the default route) can also run between them. You can choose any of them as required.
Context
The routing protocol run between a Spoke-PE and a Spoke-CE is related to the routing protocol run between a Hub-PE and a Hub-CE. EBGP, IGP, and the static route (including the default route) can run between a Hub-PE and a Hub-CE. You can choose any of them as required.
Procedure
- Configure EBGP between a Hub-PE and a Hub-CE.
For detailed configuration procedures, see Configuring Route Exchange Between PEs and CEs.
In this mode, EBGP, IGP, or static route (including the default route) can be run between a Spoke-PE and a Spoke-CE.
If EBGP is run both between the Spoke-PE and the Spoke-CE and between the Hub-PE and the Hub-CE, you need to run the peer ip-address allow-as-loop [ number ] command in the BGP-VPN instance IPv6 address family view of the Hub-PE to allow route loops. If number is set to 1, it indicates that the route with the AS numbers in the AS_Path list repeated once is allowed.
- Configure IGP between a Hub-PE and a Hub-CE.
For detailed configuration procedures, see Configuring Route Exchange Between PEs and CEs.
In this mode, only IGP or static route (including the default route) can be run between a Spoke-PE and a Spoke-CE. BGP cannot be used. For details, see the chapter "BGP/MPLS IP VPN" in HUAWEI NetEngine 8000 F SeriesRouter Feature Description - VPN.
- Configure a static route (including the default route) between a Hub-PE and a Hub-CE.
For detailed configuration procedures, see Configuring Route Exchange Between PEs and CEs.
In this mode, EBGP, IGP, or static route (including the default route) can be run between a Spoke-PE and a Spoke-CE.
If a Hub-CE adopts the default route to access the Hub-PE, to enable the Hub-PE to advertise the default route to all the Spoke-PEs, you need to run the following commands on the Hub-PE:
Run the ipv6 route-static vpn-instance vpn-instance-name :: 0 nexthop-address [ tag tag ] [ description text ] command in the system view.
In this example, vpn-instance-name specifies VPN-out and nexthop-address specifies the IPv6 address of the Hub-CE interface that connects to the PE interface bound to VPN-out.
Run the network :: 0 command in the BGP-VPN instance IPv6 address family view to advertise the default route to all the Spoke-PEs through MP-BGP.