Controlling Route Distribution And Reception; Configuration Prerequisites; Configuring Bgp Route Summarization; Advertising A Default Route To A Peer Or Peer Group - HP MSR2000 series Configuration Manual

Controlling route distribution and reception

Configuration prerequisites

BGP connections must be created.

Configuring BGP route summarization

To reduce the routing table size on medium and large BGP networks, you need to configure route
summarization on BGP routers. BGP supports automatic and manual summarization modes. Manual
summary routes have a higher priority than automatic ones.
Configuring automatic route summarization
After automatic route summarization is configured, BGP summarizes redistributed IGP subnets to
advertise only natural networks. Routes injected with the network command cannot be summarized.
To configure automatic route summarization:
Step
1. Enter system view.
2. Enter BGP view.
3. Configure automatic route
summarization.
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.
To configure BGP manual route summarization:
Step
1. Enter system view.
2. Enter BGP view.
3. Configure manual route
summarization.

Advertising a default route to a peer or peer group

After this task is configured, the BGP router sends a default route with the next hop being itself to the
specified peer or peer group. This action is taken regardless of whether the default route is available in
the routing table.
Command
system-view
bgp as-number
summary automatic
Command
system-view
bgp as-number
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 ]*
203
Remarks
N/A
N/A
Not configured by
default.
Remarks
N/A
N/A
Not configured by
default.