R2511-HP MSR Router Series MPLS Configuration Guide(V5)
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Ste
p
Command
3. Enter BGP VPN instance view.
ipv4-family vpn-instance vpn-instance-name
4. Redistribute direct routes into BGP (to redistribute
the loopback interface route into BGP).
import-route direct [ med med-value | route-policy
route-policy-name ] *
5. Redistribute OSPF VPN routes.
import-route ospf [ { process-id | all-processes }
[ allow-direct | med med-value | route-policy
route-policy-name ] * ]
Creating a sham link
Follow these guidelines when you create a sham link:
• If you start OSPF but do not configure the router ID, the system automatically elects one. However,
the same election rules produce the same router ID. Therefore, HP recommends that you configure
the router ID when starting an OSPF process. For the election rules, see Layer 3—IP Routing
Configuration Guide.
• If you configure multiple OSPF VPN instances but do not configure the route tag, the system
automatically creates one based on the AS number configured. If you do not configure BGP, the tag
will be 0. However, the same calculation rule produces the same tag, and hence the same tag is
created for multiple OSPF VPN instances on the same PE or PEs with the same AS number. Therefore,
HP recommends configuring different tags for different OSPF VPN instances.
To create a sham link:
Ste
p
Command
Remarks
1. Enter system view.
system-view N/A
2. Enter OSPF view.
ospf [ process-id | router-id router-id |
vpn-instance vpn-instance-name ] *
N/A
3. Configure the external
route tag for imported
VPN routes.
route-tag tag-value N/A
4. Enter OSPF area view.
area area-id N/A
5. Configure a sham link.
sham-link source-ip-address
destination-ip-address [ cost cost | dead
dead-interval | hello hello-interval |
retransmit retrans-interval | trans-delay
delay | simple [ cipher | plain ]
password | { md5 | hmac-md5 } key-id
[ cipher | plain ] password ]*
By default, no sham link is
configured.
If you configure authentication for
a sham link, you must configure the
same area authentication mode on
all routers in the area.
Configuring routing on an MCE
MCE implements service isolation through route isolation. MCE routing configuration includes:
• MCE-VPN site routing configuration
• MCE-PE routing configuration
On the PE in an MCE network environment, disable routing loop detection to avoid route loss during
route calculation and disable route redistribution between routing protocols to save system resources.