Administrator Guide

Layer 3 Routing Commands 1299
Default Configuration
There is no prefix limit by default. The default warning threshold is 75%. A
neighbor that exceeds the limit is shut down by removing the adjacency
unless the warning-only option is configured.
Command Mode
BGP Router Configuration mode
User Guidelines
If the peering session is shut down, the adjacency stays down until clear ip
bgp is issued for the neighbor.
Different limits can be set for IPv4 and IPv6.
Command History
Introduced in version 6.2.0.1 firmware.
Example
console(config-router)#neighbor FE80::0202:B3FF:FE1E:8329 maximum-prefix
unlimited
neighbor maximum-prefix (IPv6 Address Family
Configuration)
In IPv6 address family configuration mode, the neighbor maximum-prefix
command specifies the maximum number of IPv6 prefixes that BGP will
accept from a given neighbor.
Syntax
neighbor { ip-address | ipv6-address [ interface interface-id ]} maximum-
prefix { maximum [
threshold ] [warning-only] | unlimited }
no neighbor { ip-address | ipv6-address [ interface interface-id ]} maximum-
prefix
• ip-address — The neighbor’s IP address.
•
ipv6-address — The neighbor’s IPv6 address. If the neighbor’s IPv6 address
is a link local address, the local interface must also be specified.
2CSNXXX_SWUM204.book Page 1299 Monday, January 25, 2016 1:25 PM