C613-50631-01 Rev A Command Reference for IE340 Series 1334
AlliedWare Plus™ Operating System - Version 5.5.3-0.x
BGP AND BGP4+ COMMANDS
BGP
DAMP-PEER-OSCILLATION (BGP ONLY)
bgp damp-peer-oscillation (BGP only)
Overview Use this command to enable BGP peer oscillating connection damping.
Use the no variant of this command to disable BGP peer oscillating connection
damping.
Syntax
bgp damp-peer-oscillations
no bgp damp-peer-oscillations
Default By default, this functionality is enabled and will not appear in the show
running-config command output.
Mode Router Configuration
Usage BGP peers in AlliedWare Plus will automatically attempt to form connections with
configured neighbors. Due to misconfiguration these connections may fail and
continue to fail until such time as the misconfiguration is detected and fixed.
During this time, BGP can quickly cycle through the state machine from Idle
through the various Connect states, which can result in large numbers of TCP
sessions being opened in a short period of time.
This command instead adds a delay after a peer enters the Idle state before it can
progress to the later states. The default delay is 0 second, increasing by 1 second
for each unsuccessful connection attempt, to a maximum of 5 seconds. After a
successful BGP route update has been received over a connection, the delay will be
reset to 0. This command implements the DampPeerOscillations FSM behavior
described in section 8.1 of RFC 4271.
The command is enabled by default. When disabled, peers will transition out of the
Idle state immediately. The command applies globally to all currently configured
BGP peers and all future peers to be created.
Example To disable peer connection damping, use the commands:
awplus# configure terminal
awplus(config)# router bgp 1
awplus(config-router)# no bgp damp-peer-oscillations
Command
changes
Added to AlliedWare Plus prior to 5.4.6-1
Version 5.4.7-2.1: BGP support added for x510 and x550 series
Version 5.4.7-2.4: BGP support added for IE300 series
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