R0106-HP MSR Router Series MPLS Configuration Guide(V7)
201
Ste
p
Command
Remarks
3. Configure the ASBR in the
same AS as an IBGP peer.
peer { group-name | ip-address }
as-number as-number
By default, no BGP peer is created.
4. Configure the PE of another AS
as an EBGP peer.
peer { group-name | ip-address }
as-number as-number
By default, no BGP peer is created.
5. Create the BGP IPv4 unicast
address family and enter its
view.
address-family ipv4 [ unicast ]
By default, the BGP IPv4 unicast
address family is not created.
6. Enable BGP to exchange IPv4
unicast routes with the ASBR in
the same AS.
peer { group-name | ip-address }
enable
By default, BGP does not exchange
IPv4 unicast routes with any peer.
7. Enable BGP to exchange
labeled IPv4 routes with the
ASBR in the same AS.
peer { group-name | ip-address }
label-route-capability
By default, BGP cannot exchange
labeled routes with any IPv4 peer
or peer group.
8. Return to BGP view.
quit N/A
9. Enter BGP VPNv4 address
family view.
address-family vpnv4 N/A
10. Enable BGP to exchange
VPNv4 routes with the PE in
different ASs.
peer { group-name | ip-address }
enable
By default, BGP cannot exchange
VPNv4 routes with any peer.
11. (Optional.) Configure the PE to
not change the next hop of
routes advertised to the EBGP
peer.
peer { group-name | ip-address }
next-hop-invariable
Configure this command on the RR
so the RR does not change the next
hop of advertised VPNv4 routes.
Configuring an ASBR
To set up an inter-AS public tunnel for the inter-AS option C solution, an ASBR must assign an MPLS label
to the route destined for a PE, and advertise the label along with the route. Typically, the routes advertised
by an ASBR through BGP include the PE address as well as other routes. You can configure a routing
policy to filter routes. Routes surviving the filtering are assigned labels, and all others are advertised as
common IPv4 routes.
To configure a routing policy, use the following commands:
• if-match mpls-label—Matches routes carrying MPLS labels.
• apply mpls-label—Sets MPLS labels for IPv4 routes to be advertised to a peer. You can use this
command together with if-match clauses. For example, the if-match mpls-label command sets new
MPLS labels for routes with MPLS labels. The newly assigned labels are advertised along with the
routes.
For more information about routing policy configuration, see Layer 3—IP Routing Configuration Guide.
To configure an ASBR-PE for inter-AS option C:
Ste
p
Command
Remarks
1. Enter system view.
system-view N/A
2. (Optional.) Create a routing
policy, and enter routing policy
view.
route-policy route-policy-name
{ deny | permit } node
node-number
By default, no routing policy is
created.