Reference v4.1.0 Instruction Manual
Network OS Command Reference 655
53-1003115-01
set as-path prepend
2
set as-path prepend
Prepends an AS4 number to an AS path, makes the AS number a tag attribute for a route map, and
provides a variety of route-management options.
Synopsis set as-path prepend as-num, as-num, . . . as-num
[automatic-tag] | [comm-list acl delete] | [community num:num | num | additive | internet |
local-as | no-advertise | no-export] | [dampening [half-life | reuse | suppress |
max-suppress-time]] [ip next hop ip-addr] [ip next-hop peer-address] | [local-preference num] |
[metric [add | assign | none |sub]] | [metric-type [type-1 | type-2]] | external [metric-type
internal] |
[origin igp | incomplete] | [tag] | [weight num]
no set as-path prepend as-num, as-num,
. . . as-num
Operands automatic-tag Calculates and sets an automatic tag for the route.
comm-list acl delete Deletes a community from the community attributes field for a BGP4 route.
community Sets the community attribute for the route to the number or well-known
type specified. Possible values are num:num, Internet, no-export, local-as,
no-advertise.
num:num Specific community member.
additive Adds a community to the already existing communities.
internet The Internet community.
local-as Local sub-AS within the confederation. Routes with this community can be
advertised only within the local sub-AS.
no-advertise Routes with this community cannot be advertised to any other BGP4
devices at all.
no-export Community of sub-ASs within a confederation. Routes with this community
can be exported to other sub-ASs in the same confederation but not
outside the confederation to other ASs or otherwise sent to EBGP
neighbors.
dampening Sets dampening parameters for the route.
half-life Number of minutes after which the route penalty becomes half its value.
reuse Specifies how low a route penalty must become before the route becomes
eligible for use again after being suppressed.
suppress Specifies how high a route penalty can become before the device
suppresses the route.
max-suppress-time
Specifies the maximum number of minutes that a route can be suppressed
regardless of how unstable it is.
ip next hop Sets the next-hop IP address for a route that matches the match statement
in the route map.
ip-addr IPv4 address in dotted-decimal notation.