Brocade Mobility RFS Controller System Reference Guide (Supporting software release 5.5.0.0 and later) - Manual (Page 932)

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FIGURE 122 Access Point - OSPF External Routes tab
External routes are external to area, originate from other routing protocols (or different OSPF
processes) and are inserted into OSPF using redistribution. A stub area is configured not to carry
external routes. Each external route can be tagged by the advertising router, enabling the passing
of additional information between routers. Each external route can also be tagged by the
advertising router, enabling the passing of additional information between routers on the boundary
of the autonomous system.
The External route tab displays a list of external routes, the area impacted, cost, path type, tag and
type 2 cost. Cost factors may be the distance of a router (round-trip time), network throughput of a
link, or link availability and reliability, expressed as simple unit-less numbers. This provides a
dynamic process of traffic load balancing between routes of equal cost.
6. Refer to the Network Routes tab.