Cisco CRS-1 - Carrier Routing System Router Troubleshooting Manual page 245

Chapter 13 Troubleshooting Load Balancing
Command or Action
Step 4
maximum paths number
Example:
RP/0/RP0/CPU0:router# maximum paths 3
Step 5
end
Example:
RP/0/RP0/CPU0:router# end
Step 6
show route destination-address
Example:
RP/0/RP0/CPU0:Router# show route 10.1.2.1
Step 7
show ospf process interface brief
Example:
RP/0/RP0/CPU0:Router# show ospf 200 interface
brief
Step 8
show running-config router ospf process
Example:
RP/0/RP0/CPU0:Router# show
running-configuration router ospf process
Step 9
configure
Example:
RP/0/RP0/CPU0:router# configure
type
Step 10
interface interface
Example:
RP/0/RP0/CPU0:router# interface gi0/6/5/7
Step 11
cost value
Example:
RP/0/RP0/CPU0:router# cost 1
Step 12
end
Example:
RP/0/RP0/CPU0:router# end
Step 13 show route destination-address
Example:
RP/0/RP0/CPU0:Router# show route 10.1.2.1
OL-21483-02
Troubleshooting Layer 3 or Layer 4 Load Balancing
Purpose
Configures the maximum number of paths over which to
load balance. By default, OSPF balances up to 4 equal-cost
paths.
Ends the configuration process. Enter yes at the prompt to
commit the changes.
Displays the routes to a destination address.
Verify that number of routes in the routing table equals the
number of parallel links. If you have fewer routes than
expected, continue with this procedure.
Shows interface information for all routes to the destination
address, which displays the cost metric. OSPF balances
loads over equal-cost routes only, so verify that the
interfaces have equal costs. To load balance over unequal
paths, use Enhanced Interior Gateway Routing Protocol or
Interior Gateway Routing Protocol (EIGRP/IGRP) as the
IGP instead.
Displays the running configuration for the OSPF process.
This is another way to determine if the interfaces have
different costs.
Enters global configuration mode.
Enters interface configuration mode.
Sets the cost of this interfaceto to the same value as the cost
of the other parallel interfaces. If necessary, repeat the
previous step and this step for other interfaces.
Ends the configuration process. Enter yes at the prompt to
commit the changes.
Displays the routes to a destination address.
Verify that number of routes in the routing table equals the
number of parallel links.
Cisco IOS XR Troubleshooting Guide for the Cisco CRS-1 Router
13-235