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in addition to the reachability check of the next hop, the BGP router must find an active IGP route with the
same destination network segment before it can advertise the iBGP route (use the
display ip routing-table
protocol
command to check the IGP route state).
Follow these steps to enable BGP and IGP synchronization:
To do…
Use the command…
Remarks
Enter system view
system-view
—
Enter BGP view
bgp
as-number
—
Enable synchronization between
BGP and IGP
synchronization
Required
Not enabled by default
Limiting prefixes received from a peer or peer group
Follow these steps to configure the maximum number of prefixes allowed to be received from a peer or
peer group:
To do…
Use the command…
Remarks
Enter system view
system-view
—
Enter BGP view
bgp
as-number
—
Specify the maximum number of
prefixes that can be received from
a peer or peer group.
If the number is reached, the router
breaks down the BGP connection
to the peer.
peer
{
group-name
|
ip-address
}
route-limit
prefix-number
[
percentage-value
]
Specify the maximum number of
prefixes that can be received from
a peer or peer group.
If the number is reached, the router
outputs alert information but does
not break down the BGP
connection to the peer.
peer
{
group-name
|
ip-address
}
route-limit
prefix-number
alert-only
[
percentage-value
]
Specify the maximum number of
prefixes that can be received from
a peer or 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.
peer
{
group-name
|
ip-address
}
route-limit
prefix-number
reconnect
reconnect-time
[
percentage-value
]
Required
Use one of the commands.
No limit is configured by default.
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:
