Juniper J2300 User Manual page 387

Table 131: Summary of Key Routing Policy Actions
Action
Flow Control Actions
accept
reject
next term
next policy
Route Manipulation Actions
as-path-prepend as-path
as-path-expand last-as count n
class class-name
color preference
color2 preference
damping name
local-preference value
Description
These actions control the flow of routing information into and out of the routing table.
Accepts the route and propagates it. After a route is accepted, no other terms in the
routing policy and no other routing policies are evaluated.
Rejects the route and does not propagate it. After a route is rejected, no other terms
in the routing policy and no other routing policies are evaluated.
Skips to and evaluates the next term in the same routing policy. Any accept or reject
action specified in the then statement is ignored. Any actions specified in the then
statement that manipulate route characteristics are applied to the route.
Skips to and evaluates the next routing policy. Any accept or reject action specified
in the then statement is ignored. Any actions specified in the then statement that
manipulate route characteristics are applied to the route.
These actions manipulate the route characteristics.
Appends one or more autonomous system (AS) numbers at the beginning of the
AS path. If you are specifying more than one AS number, include the numbers in
quotation marks.
The AS numbers are added after the local AS number has been added to the path.
This action adds AS numbers to AS sequences only, not to AS sets. If the existing AS
path begins with a confederation sequence or set, the appended AS numbers are
placed within a confederation sequence. Otherwise, the appended AS numbers are
placed with a nonconfederation sequence.
Extracts the last AS number in the existing AS path and appends that AS number to
the beginning of the AS path n times. Replace n with a number from 1 through 32.
The AS numbers are added after the local AS number has been added to the path.
This action adds AS numbers to AS sequences only, not to AS sets. If the existing AS
path begins with a confederation sequence or set, the appended AS numbers are
placed within a confederation sequence. Otherwise, the appended AS numbers are
placed with a nonconfederation sequence.
Applies the specified class-of-service (CoS) parameters to routes installed into the
routing table.
Sets the preference value to the specified value. The color and color2 preference
values can be a number from 0 through 4,294,967,295 (2 32 – 1). A lower number
indicates a more preferred route.
Applies the specified route-damping parameters to the route. These parameters
override BGP's default damping parameters.
This action is useful only in import policies.
Sets the BGP local preference attribute. The preference can be a number from 0
through 4,294,967,295 (2 32 – 1).
Policy, Firewall Filter, and Class-of-Service Overview
Routing Policy Overview
357