Brocade FastIron Ethernet Switch Layer 3 Routing Configuration Guide - Manual (Page 582)

show ipv6 bgp summary output descriptions (Continued) TABLE 124
This field... Displays...
ToSend The number of routes the has queued to send to this neighbor.
Configuring BGP4+ graceful restart
BGP4+ Graceful Restart (GR) can be configured for a global routing instance.
The following sections describe how to enable the BGP4+ Graceful Restart feature.
BGP4+ Graceful Restart can be executed in IPv6 address families. Depending on the remote neighbor
address family, the command and its parameters will be taken from the IPv6 family.
When the graceful restart command is enabled, the BGP graceful restart capability is negotiated with
neighbors in the BGP OPEN message when the session is established. If the neighbor also advertises
support for graceful restart, then graceful restart is activated for that neighbor session. If the neighbor
does not advertise support for graceful restart, then graceful restart is not activated for that neighbor
session even though it is enabled locally. If the neighbor has not sent graceful restart parameters, the
restarting device will not wait for the neighbor to start route-calculation, but graceful restart will be
enabled.
Graceful restart is enabled by default.
Configuring BGP4+ graceful restart for the global routing instance
Use the following command to enable the BGP4+ graceful restart feature globally on a device.
device(config)# router bgp
device(config-bgp)# graceful-restart
Syntax: [no] graceful-restart
Configuring timers for BGP4+ graceful restart (optional)
You can optionally configure the following timers to change their values from the default values:
• Restart Timer
• Stale Routes Timer
• Purge Timer
Configuring the restart timer for BGP4+ graceful restart
Use the following command to specify the maximum amount of time a device will maintain routes from
and forward traffic to a restarting device.
device(config-bgp)# graceful-restart restart-timer 150
Syntax: [no] graceful-restart restart-timer seconds
The seconds variable sets the maximum restart wait time advertised to neighbors. The allowable
range is 1 to 3600 seconds. The default value is 120 seconds.
Configuring BGP4+ graceful restart
582 FastIron Ethernet Switch Layer 3 Routing Configuration Guide
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