Command syntax
Description
Default
CLI reference
[no] neighbor
ipv4-
addr
ignore-
leading-as
Some routers are capable
of propagating routes
without appending their
own autonomous system
number to the AS Path.
By default, BGP will drop
such routes.
Allowing BGP to keep
routes without AS
number
on page 368
[no] neighbor
ipv4-
addr
local-as
as-#
Identifies the autonomous
system (AS) that BGP is
representing to a peer.
The default AS number for
this command is the
current AS (configured
with the router bgp
command in Global
Configuration mode.)
Identifying the AS that
BGP is representing to a
peer
on page 368
[no] neighbor
ipv4-
addr
maximum-
prefix
max-routes
Specifies the maximum
number of routes that BGP
will accept for installation
into the RIB.
The value defaults to
“unlimited” if not specified,
or if using the no version
of the command.
Specifying maximum
number of routes for
installation into the RIB
on page 368
[no] neighbor
ipv4-
addr
out-delay
sec
The specified integer
represents the amount of
time a route must be
present in the routing
database before it is
exported into BGP
Defaults to 0 if no
specified or if un-
configured by using no
version of command.
Specifying the amount
of time route is present
in database before
exported to BGP
368
[no] neighbor
ipv4-
addr
weight
weight
Preferences are the first
criteria of comparison for
route selection.
This value defaults to the
globally configured
preference if it is not
specified.
Specifying a route's
preference
[no] neighbor
ipv4-
addr
send-community
To specify that a
community’s attribute
should be sent to a BGP
neighbor, use the neighbor
send-community
command in address
family or router
configuration mode.
Sending a community's
attribute to a BGP
neighbor
on page 368
[no] neighbor
ipv4-
addr
use-med
Processes sending of
MEDS and for handling
received MEDs.
By default MEDs are used
to choose which route to
use.
Processing sent and
received MEDs
369
[no] neighbor
ipv4-
addr
timers
keep-
alive
hold-time
To set the timers for a
specific BGP peer, use the
neighbor timers
command in router
configuration mode.
The values of keep-alive
and hold-time default to 60
and 180 seconds,
respectively.
Setting the timer for a
BGP peer
on page 369
Table Continued
Chapter 17 Border Gateway Protocol (BGP)
365