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aggregate (Routing)


Hierarchy Level


Configure aggregate routes.


aggregate-options—Additional information about aggregate routes that is included with the route when it is installed in the routing table. Specify zero or more of the following options in aggregate-options. Each option is explained separately.

  • active— Removes inactive routes from the forwarding table.

  • passive— Retains inactive routes in the forwarding table.

  • as-path <as-path> <origin (egp | igp | incomplete)> <atomic-aggregate> <aggregator as-number ip-address>;

  • (brief | full);

  • community [ community-ids ];

  • discard;

  • (metric | metric2 | metric3 | metric4) value <type type>;

  • (preference | preference2 | color | color2) preference <type type>;

  • tag metric type number;

algorithm number—Specify an IGP algorithm for the aggregate route. IS-IS can advertise aggregate routes as SRv6 locators for locator summarization, In addition to the IPv6 aggregate prefix advertisement, IS-IS advertises the summary locator only if the node participates in the specified flexible algorithm.

  • Range—Specify an algorithm from 0 through 255.
    Note: Algorithm 0 and 1 are assigned to SPF and strict SPF respectively based on the link metric, Algorithm numbers from 2 to 127 are unassigned per IGP Algorithm Types registry defined by the IANA (Internet Assigned Numbers Authority). IS-IS does not consider algorithm values from 2 to 127 even if you configure these values; such prefixes are skipped. Algorithm numbers from 128 to 255 are assigned to flexible algorithms.

defaults—Specify global aggregate route options. These options only set default attributes inherited by all newly created aggregate routes. These are treated as global defaults and apply to all the aggregate routes you configure in the aggregate statement. This part of the aggregate statement is optional.

route destination-prefix—Configure a nondefault aggregate route:

  • default—For the default route to the destination. This is equivalent to specifying an IP address of

  • destination-prefix/prefix-lengthdestination-prefix is the network portion of the IP address, and prefix-length is the destination prefix length.

  • next-table next-table—Specify the name of the next routing table to the destination. Forwarding for the aggregate prefix is done using this table. When you configure next-table to next-hop, route lookup is redirected to the route table that the next hop points to.

The policy statement is explained separately.

Required Privilege Level

routing—To view this statement in the configuration.

routing-control—To add this statement to the configuration.

Release Information

Statement introduced before Junos OS Release 7.4.