Disabling Or Re-Enabling Load Sharing - Dell PowerConnect B-FCXs Configuration Manual

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.
PowerConnect#show ip ospf database external extensive
Index Aging
1

Disabling or re-enabling load sharing

Dell 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.
destination (in this case, R1).
FIGURE 145
H1
H2
H3
H4
In the example in
•
PowerConnect B-Series FCX Configuration Guide
53-1002266-01
LS ID
2 4.4.0.0
Figure 145 shows an example of an OSPF network containing multiple paths to a
Example OSPF network with four equal-cost paths
R1
Figure 145, the Dell PowerConnect switch has four paths to R1:
PowerConnect>R3
Router Netmask
10.10.10.60 ffff0000 80000008
OSPF Area 0
R3
R4
R5
R6
Configuring OSPF
Metric Flag
0000
Device
29
955