Administrator Guide

Layer 3 Routing Commands 1288
Syntax
neighbor { ip-address | ipv6-address [interface interface-id ]} default-
originate [route-map
map-name ]
• ip-address —The neighbor’s IPv4 address.
•
ipv6-address [ interface interface-id ]—The neighbor’s IPv6 address. If the
neighbor’s IPv6 address is a link local address, the local interface must also
be specified.
•
route-map map-name —(Optional) A route map may be configured to set
attributes on the default route advertised to the neighbor.
Default Configuration
No default is originated by default.
Command Mode
IPv6 Address Family Configuration
User Guidelines
By default, a neighbor-specific default has no MED and the Origin is IGP.
Attributes may be set using an optional route map. A neighbor-specific
default is only advertised if the Adj-RIB-Out does not include a default
learned by other means, either from the
default-information originate (BGP
Router Configuration)
command or a default learned from a peer. This type of
default origination is not conditioned on the presence of a default route in
the routing table. This form of default origination does not install a default
route in the BGP routing table (it will not appear in the
show ip bgp
command), nor does it install a default route in the Adj-RIB-Out for the
update group of peers so configured (it will not appear in the
show ip bgp
neighbors advertised-routes
command).
Origination of the default route is not subject to a prefix filter configured
with the command
distribute-list prefix out (BGP Router Configuration) .
A route map may be configured to set attributes on the default route sent to
the neighbor. If the route map includes a match ip-address term, that term is
ignored. If the route map includes match community or match as-path
terms, the default route is not advertised. If there is no route map with the
route map name given, the default route is not advertised.
2CSNXXX_SWUM204.book Page 1288 Monday, January 25, 2016 1:25 PM