Policy Framework Configuration Guide - Juniper Networks

Junos 10.4 Policy Framework Configuration Guide
type:administrator:assigned-number
type is the type of extended community and can be either the 16-bit numerical identifier
of a specific BGP extended community or one of these types:
• bandwidth—Sets up the bandwidth extended community. Specifying link bandwidth
allows you to distribute traffic unequally among different BGP paths.
NOTE: The link bandwidth attribute does not work concurrently with
per-prefix load balancing.
• domain-id—Identifies the OSPF domain from which the route originated.
• origin—Identifies where the route originated.
• rt-import—Identifies the route to install in the routing table.
NOTE: You must identify the route by an IP address, not an AS number.
• src-as—Identifies the AS from which the route originated. You must specify an AS
number, not an IP address.
NOTE: You must identify the AS by an AS number, not an IP address.
• target—Identifies the destination to which the route is going.
NOTE: For an import policy for a VPN routing and forwarding (VRF)
instance, you must include at least one route target. Additionally, you
cannot use wildcard characters or regular expressions in the route target
for a VRF import policy. Each value you configure for a route target for a
VRF import policy must be a single value.
administrator is the administrator. It is either an AS number or an IP version 4 (IPv4)
address prefix, depending on the type of extended community.
assigned-number identifies the local provider.
In Junos OS Release 9.1 and later, you can specify 4-byte AS numbers as defined in
RFC 4893, BGP Support for Four-octet AS Number Space, as well as the 2-byte AS numbers
that are supported in earlier releases of the Junos OS. In plain-number format, you can
configure a value in the range from 1 through 4,294,967,295. To configure a target or
origin extended community that includes a 4-byte AS number in the plain-number format,
append the letter “L” to the end of number. For example, a target community with the
4-byte AS number 334,324 and an assigned number of 132 is represented as
target:334324L:132.
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