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BGP and BGP4+ Commands
Software Reference Supplement for SwitchBlade® x8112, x908, x900 and x610 Series Switches
C613-50032-01 REV D AlliedWare Plus
TM
Operating System - Software Version 5.4.3-2.6 3.27
Usage [BGP/BGP4+] 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.
Example
[BGP]
Example
[BGP4+]
bgp default ipv4-unicast (BGP and BGP4+)
This command configures BGP defaults and activates IPv4-unicast for a peer by default.
This affects BGP global configuration. By default, BGP exchanges IPv4 prefixes with a peer.
The no variant of this command disables this function. The BGP routing process will no
longer exchange IPv4 addressing information with BGP neighbor routers. Note that
disabling the exchange of IPv4 prefixes will also enable an IPv6 only BGP4+ network.
Syntax bgp default ipv4-unicast
no bgp default ipv4-unicast
Default
This is enabled by default.
Mode Router Configuration
Usage Use the negated form of this command to enable an IPv6 only BGP4+ network.
Examples
awplus#
configure terminal
awplus(config)#
router bgp 11
awplus(config-router)#
bgp dampening 20 800 2500 80 25
awplus#
configure terminal
awplus(config)#
router bgp 11
awplus(config-router)#
address-family ipv6
awplus(config-router-af)#
bgp dampening 20 800 2500 80 25
awplus#
configure terminal
awplus(config)#
router bgp 100
awplus(config-router)#
bgp default ipv4-unicast
awplus#
configure terminal
awplus(config)#
router bgp 100
awplus(config-router)#
no bgp default ipv4-unicast