Brocade Communications Systems Layer 3 Routing Configuration ICX 6650 - Manual (Page 220)

202 Brocade ICX 6650 Layer 3 Routing Configuration Guide
53-1002603-01
Configuring OSPF
NOTE
When you use a route map for route redistribution, the software disregards the permit or deny action
of the route map.
NOTE
For an external route that is redistributed into OSPF through a route map, the metric value of the
route remains the same unless the metric is set by a set metric command inside the route map. The
default-metric num command has no effect on the route. This behavior is different from a route that
is redistributed without using a route map. For a route redistributed without using a route map, the
metric is set by the default-metric num command.
The following command shows the result of the redistribution filter. Because only one of the static
IP routes configured above matches the route map, only one route is redistributed. Notice that the
route metric is 5 before redistribution but is 8 after redistribution.
Disabling or re-enabling load sharing
Brocade routers can load share among up to eight equal-cost IP routes to a destination. By default,
IP load sharing is enabled. The default is 4 equal-cost paths but you can specify from 2 to 6 paths.
The router software can use the route information it learns through OSPF to determine the paths
and costs.
Figure 24 shows an example of an OSPF network containing multiple paths to a
destination (in this case, R1).
Brocade#show ip ospf database external extensive
Index Aging LS ID Router Netmask Metric Flag
1 2 10.4.0.0 10.10.10.60 ffff0000 80000008 0000