HP FlexNetwork HSR6600 Configuration Manual page 238

Step
11. (Optional.) Configure the PE
to not change the next hop of
routes advertised to the
EBGP peer.
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 advertised to a peer. You can use this
command together with if-match clauses. For example, the apply mpls-label command works
together with the if-match mpls-label command to set 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 for inter-AS option C:
Step
1. Enter system view.
2. (Optional.) Create a routing
policy, and enter routing
policy view.
3. (Optional.) Match IPv4
routes carrying labels.
4. (Optional.) Set labels for
IPv4 routes.
5. Return to system view.
6. Enter interface view of the
interface connected to an
internal router of the AS.
7. Enable MPLS on the
interface.
8. Enable MPLS LDP on the
interface.
9. Return to system view.
10. Enter interface view of the
interface connected to the
remote ASBR.
11. Enable MPLS on the
interface.
12. Return to system view.
Command
peer { group-name | ipv4-address
[ mask-length ] }
next-hop-invariable
Command
system-view
route-policy route-policy-name
{ deny | permit } node
node-number
if-match mpls-label
apply mpls-label
quit
interface interface-type
interface-number
mpls enable
mpls ldp enable
quit
interface interface-type
interface-number
mpls enable
quit
228
Remarks
By default, the device uses its
address as the next hop of routes
advertised to peers.
Configure this command on the
RR so the RR does not change
the next hop of advertised VPNv4
routes.
Remarks
N/A
By default, no routing policies
exist.
By default, no MPLS label match
criterion is configured.
By default, no MPLS label is set
for IPv4 routes.
N/A
N/A
By default, MPLS is disabled on
the interface.
By default, MPLS LDP is disabled
on the interface.
N/A
N/A
By default, MPLS is disabled on
the interface.
N/A