R2511-HP MSR Router Series Layer 3 - IP Routing Configuration Guide(V5)

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To configure automatic route summarization:
Ste
p
Command Remarks
1. Enter system view.
system-view N/A
2. Enter BGP view or BGP-VPN
instance view.
• Enter BGP view:
bgp as-number
• Enter BGP-VPN instance view:
a. bgp as-number
b. ipv4-family vpn-instance
vpn-instance-name
Use either method.
3. Configure automatic route
summarization.
summary automatic Not configured by default.
Configuring manual route summarization
By configuring manual route summarization, you can summarize both redistributed routes and routes
injected using the network command and determine the mask length for a summary route as needed.
The output interface of a BGP summary route is Null 0. With route summarization, BGP advertises fewer
routes to its peers. A summary route must not be optimal; otherwise, BGP will fail to forward the packets
matching the route. If a summarized specific route has the same mask as the summary route but has a
lower priority, the summary route becomes the optimal route. In this case, you must change the priority
of the summary or the specific route to make the specific route the optimal route.
To configure BGP manual route summarization:
Ste
p
Command Remarks
1. Enter system view.
system-view N/A
2. Enter BGP view or BGP-VPN
instance view.
• Enter BGP view:
bgp as-number
• Enter BGP-VPN instance view:
a. bgp as-number
b. ipv4-family vpn-instance
vpn-instance-name
Use either method.
3. Configure manual route
summarization.
aggregate ip-address { mask |
mask-length } [ as-set |
attribute-policy route-policy-name
| detail-suppressed | origin-policy
route-policy-name |
suppress-policy
route-policy-name ]*
Not configured by default.
Advertising a default route to a peer or peer group
Perform this task to advertise a default BGP route with the next hop being the advertising router to a peer
or peer group.
To advertise a default route to a peer or peer group: