Users Guide

Table Of Contents
Usage Information Fast external fall-over terminates the EBGP session immediately after the IP unreachability or link failure is
detected. This only applies after you manually reset all existing BGP sessions. For the configuration to take effect,
use the clear ip bgp command. The no version of this command disables fast external fallover.
NOTE: To configure these settings for a non default VRF instance, you must first enter the
ROUTER-CONFIG-VRF sub mode using the following commands:
1. Enter the ROUTER BGP mode using the router bgp as-number command.
2. From the ROUTER BGP mode, enter the ROUTER BGP VRF mode using the vrf vrf-name
command.
Example
OS10(conf-router-bgp-10)# fast-external-fallover
Supported
Releases
10.3.0E or later
graceful-restart
Enables graceful or hitless restart and configures the required parameters for the restart process.
Syntax
graceful-restart role receiver-only
Parameters
role — Sets the restart role of the local router
receiver-only — Local router supports graceful restart as a receiver only
Defaults Disabled
Command Mode ROUTER BGP
Usage Information
When you enable graceful restart on a node, its BGP neighbor acts as a helper by not dropping the sessions and
maintaining the route information so that the traffic is not disturbed. The no version of this command disables
graceful-restart helper mode.
NOTE: To configure these settings for a non-default VRF instance, you must first enter ROUTER-
CONFIG-VRF sub mode using the following commands:
1. Enter the ROUTER BGP mode using the router bgp as-number command.
2. From the ROUTER BGP mode, enter the ROUTER BGP VRF mode using the vrf vrf-name
command.
Example
OS10(conf-router-bgp-10)# graceful-restart role receiver-only
Supported
Releases
10.3.0E or later
inherit template
Configures a peer group template name that the neighbors use to inherit peer-group configuration.
Syntax
inherit template template-name
Parameters
template-name — Enter a template name. A maximum of 16 characters.
Default Not configured
Command Mode ROUTER-NEIGHBOR
Usage Information When network neighbors inherit a template, all that are enabled on the template are also supported on the
neighbors. The no version of this command disables the peer group template configuration.
Example
OS10(conf-router-neighbor)# inherit template zanzibar
Layer 3 557