Administrator Guide

In the above example configuration, the BGP timers are set with keepalive time as 80 seconds with which the system sends keepalive
messages to the BGP peer and holdtime as 120 seconds with which the system waits for a message from the BGP peer before concluding
that the peer is dead.
To view non-default values, use the show config command in CONFIGURATION ROUTER BGP mode or the show running-
config bgp command in EXEC Privilege mode.
Setting the extended timer
To configure BGP idle hold time, use the following commands.
Timer values configured with the neighbor timers extended command override the timer values configured with the timers
bgp extended command.
The peer remains in idle state based on the configured idle-holdtime. The less the idle-holdtime, lesser the peer remains in idle
state.
NOTE: For the new idle-holdtime to take effect, you need to shutdown the respective peer manually using neighbor
shutdown command and enable the peer again.
• Configure
idle-holdtime values for a BGP neighbor or peer group.
CONFIG-ROUTER-BGP mode
neighbors {ip-address | ipv6-address | peer-group-name} timers extended idle-holdtime
idle-holdtime: the range is from 1 to 32767. Time interval, in seconds, during which the peer remains in idle state. The default is
15 seconds.
• Configure idle-holdtime values for all BGP neighbors.
CONFIG-ROUTER-BGP mode
timers bgp extended idle holdtime
idle-holdtime: the range is from 1 to 32767. Time interval, in seconds, during which the peer remains in idle state. The default is
15 seconds.
Enabling or disabling BGP neighbors
You can enable or disable all the configured BGP neighbors using the shutdown all command in ROUTER BGP mode.
To disable all the configured BGP neighbors:
1. Enter the router bgp mode using the following command:
CONFIGURATION Mode
router bgp as-number
2. In ROUTER BGP mode, enter the following command:
ROUTER BGP Mode
shutdown all
You can use the no shutdown all command in the ROUTER BGP mode to re-enable all the BGP interface.
You can also enable or disable BGP neighbors corresponding to the IPv4 unicast or multicast address families and the IPv6 unicast address
family.
To enable or disable BGP neighbors corresponding to the IPv4 unicast address families, use the following commands:
1. Enter the router bgp mode using the following command:
CONFIGURATION Mode
router bgp as-number
2. Shut down the BGP neighbors corresponding to the IPv4 unicast address family using the following command:
shutdown address-family-ipv4-unicast
To enable or disable BGP neighbors corresponding to IPv4 multicast address family:
Border Gateway Protocol (BGP)
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