Multicast and Routing Guide K/KA/KB.15.15

Enabling nonstop forwarding for BGP
Syntax:
[no] nonstop
Configured under BGP routing context, enables nonstop forwarding for BGP on the
8200 series devices and enables the router to retain the ip forwarding table across
redundancy switchover.
Neighbor configuration and neighbor policy configuration
Table 34 Neighbor configuration and neighbor policy configuration commands
CLI referenceDefaultDescriptionCommand syntax
(page 298)Adds an entry to the BGP
neighbor table in router
configuration mode.
neighbor ipv4-addr
remote-as as-#
no neighbor
ipv4-addr
(page 298)Exports the graceful restart
capabilities to a peering
[no] neighbor
ipv4-addr
graceful-restart
session for the ipv4 unicast
address family. This feature
is available only on the
8200 series devices.
(page 298)Specifies whether to enable
or disable dynamic
capabilities.
[no] neighbor
ipv4-addr dynamic
(page 298)Specifies the IP address to
be used on the local end of
[no] neighbor
ipv4-addr
the TCP connection with the
peer.
updated-source
ipv4-addr
(page 299)When not configured, or
when using the no version
Specifies the number of
times this autonomous system
can appear in an AS path.
[no]neighbor
ipv4-addr allowas-in
num-loops
of the command, the value
of as-loops is set to its
default value of 1.
(page 299)Causes all occurrences of
our peer’s AS to be replaced
with one from an export.
[no] neighbor
ipv4-addr
as-override
(page 299)By default, BGP will drop
such routes.
Some routers are capable of
propagating routes without
[no] neighbor
ipv4-addr
ignore-leading-as
appending their own
autonomous system number
to the AS Path.
(page 299)The default AS number for
this command is the current
Identifies the autonomous
system (AS) that BGP is
representing to a peer.
[no] neighbor
ipv4-addr local-as
as-#
AS (configured with the
router bgp command in
Global Configuration mode.)
(page 299)The value defaults to
“unlimited” if not specified,
Specifies the maximum
number of routes that BGP
[no] neighbor
ipv4-addr
or if using the no version of
the command.
will accept for installation
into the RIB.
maximum-prefix
max-routes
(page 299)Defaults to 0 if no specified
or if un-configured by using
no version of command.
The specified integer
represents the amount of
time a route must be present
[no] neighbor
ipv4-addr out-delay
sec
in the routing database
296 Border Gateway Protocol (BGP)