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If the number of routes received from a peer or peer group exceeds the upper limit, the router takes one
of the following actions based on your configuration:
•
Tears down the BGP session to the peer or peer group and does not attempt to re-establish the
session.
•
Continues to receive routes from the peer or peer group and generates a log message.
•
Retains the session to the peer or peer group, but it discards excess routes and generates a log
message.
•
Tears down the BGP session to the peer or peer group and, after a specific period of time,
re-establishes a BGP session to the peer or peer group.
You can specify a percentage threshold for the router to generate a log message. When the ratio of the
number of received routes to the maximum number reaches the percentage value, the router generates a
log message.
To limit routes that a router can receive from a peer or peer group (IPv4 unicast/multicast address family):
Step Command
Remarks
1.
Enter system view.
system-view
N/A
2.
Enter BGP IPv4 unicast
address family view,
BGP-VPN IPv4 unicast
address family view, or
BGP IPv4 multicast
address family view.
•
Enter BGP IPv4 unicast address family
view:
a.
bgp
as-number
b.
address-family ipv4
[
unicast
]
•
Enter BGP-VPN IPv4 unicast address
family view:
a.
bgp
as-number
b.
ip vpn-instance
vpn-instance-name
c.
address-family ipv4
[
unicast
]
•
Enter BGP IPv4 multicast address family
view:
a.
bgp
as-number
b.
address-family ipv4 multicast
N/A
3.
Specify the maximum
number of routes that a
router can receive from a
peer or peer group.
peer
{
group-name
|
ip-address
}
route-limit
prefix-number
[ {
alert-only
|
discard
|
reconnect
reconnect-time
} |
percentage-value
] *
By default, the number of
routes that a router can receive
from a peer or peer group is
not limited.
To limit routes that a router can receive from a peer or peer group (IPv6 unicast/multicast address family):
Step Command
Remarks
1.
Enter system view.
system-view
N/A
2.
Enter BGP IPv6 unicast
address family view or
BGP IPv6 multicast
address family view.
•
Enter BGP IPv6 unicast address family
view:
a.
bgp
as-number
b.
address-family ipv6
[
unicast
]
•
Enter BGP IPv6 multicast address family
view:
a.
bgp
as-number
b.
address-family ipv6 multicast
N/A
