13 bgp default ipv4-unicast – CANOGA PERKINS 9175 Command Reference User Manual

Page 254

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CanogaOS Command Reference

16-9

the route is suppressed. The default suppress limit is 2000.

MAXSUPPRESS <1-255> Specifies the max-suppress-time. Maximum time that a dampened route is

suppressed. The default max-suppress value is 4 times the half-life time (60 minutes).

UNREACHTIME <1-45> Specifies the un-reachability half-life time for penalty, in minutes.

ROUTEMAP = route-map WORD Route-map to specify criteria for dampening.

WORD Specify the name of the route-map.

Command Mode

Router mode

Usage

Route dampening minimizes the instability caused by route flapping. A penalty is added for every flap in a

flapping route. As soon as the total penalty reaches the suppress limit the advertisement of the route is

suppressed. This penalty is decayed according to the configured half time value. Once the penalty is lower

than the reuse limit, the route advertisement is un-suppressed.

The dampening information is purged from the router once the penalty becomes less than half of the reuse

limit.

Examples

Switch# configure terminal

Switch(config)# router bgp 11

Switch(config-router)# bgp dampening 20 800 2500 80 25

16.13 bgp default ipv4-unicast

Use this command to configure BGP defaults and activate ipv4-unicast for a peer by default. This affects the

BGP global configuration.

Use the no parameter with this command to disable this function

Command Syntax

(no) bgp default ipv4-unicast

Default

The bgp default ipv4 unicast is the default behavior.

Command Mode

Router mode

Usage

The no bgp default ipv4-unicast command is used to disable the default behavior of the BGP routing process

of exchanging IPv4 addressing information with BGP neighbor routers.

Examples

Switch# configure terminal

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