IS-IS external metric

The software supports the IS-IS external metric to differentiate between internal and external routes with Accept Policies.

With this feature you can use IS-IS to:

change the external metric-type of a route when redistributing it from another protocol to IS-IS through route redistribution using a route-map.
change the external metric-type of a route when accepting a remote IS-IS route with the help of IS-IS accept policies using a route-map.
match the external metric-type when redistributing IS-IS routes into other protocols using the match option in the route-map.
match the external metric-type when accepting a remote IS-IS route with the help of IS-IS accept policies by using a route-map
process the external metric-type in the route selection process.

The IS-IS metric type can also be set using the base redistribute command without using the route-map.