Enabling Bgp And Igp Route Synchronization; Limiting Prefixes Received From A Peer/Peer Group; Configuring Bgp Route Dampening - H3C LS-3100-52P-OVS-H3 Operation Manual

Enabling BGP and IGP Route Synchronization

By default, when a BGP router receives an iBGP route, it only checks the reachability of the route's next
hop before advertisement. With BGP and IGP synchronization enabled, the BGP router cannot
advertise the iBGP route to eBGP peers unless the route is also available in the IGP routing table.
Follow these steps to enable BGP and IGP synchronization:
To do...
Enter system view
Enter BGP view
Enable synchronization
between BGP and IGP

Limiting Prefixes Received from a Peer/Peer Group

Follow these steps to configure the maximum number of prefixes allowed to be received from a
peer/peer group:
Enter system view
Enter BGP view
Specify the maximum number of prefixes that
can be received from a peer/peer group.
If the number is reached, the router breaks down
the BGP connection to the peer.
Specify the maximum number of prefixes that
can be received from a peer/peer group.
If the number is reached, the router outputs alert
information but does not break down the BGP
connection to the peer.
Specify the maximum number of prefixes that
can be received from a peer/peer group.
If the number is reached, the router breaks down
the BGP connection to the peer and then
reestablishes a BGP connection to the peer.

Configuring BGP Route Dampening

By configuring BGP route dampening, you can suppress unstable routes from being added to the local
routing table or being advertised to BGP peers.
Follow these steps to configure BGP route dampening:
To do...
Enter system view
Enter BGP view
Use the command...
system-view
bgp as-number
synchronization
To do...
system-view
bgp as-number
Use the command...
system-view
bgp as-number
peer { group-name |
ip-address } route-limit
prefix-number
[ percentage-value ]
peer { group-name |
ip-address } route-limit
prefix-number alert-only
[ percentage-value ]
peer { group-name |
ip-address } route-limit
prefix-number reconnect
reconnect-time
[ percentage-value ]
Use the command...
1-24
Remarks
—
—
Required
Not enabled by default
Remarks
—
—
Required to choose
any;
No limit is
configured by
default.
Remarks
—
—