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Catalyst 3550 Multilayer Switch Software Configuration Guide
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Chapter 22 Configuring IP Unicast Routing
Configuring Protocol-Independent Features
Beginning in privileged EXEC mode, follow these steps to change the maximum number of parallel
paths installed in a routing table from the default:
Use the no maximum-paths router configuration command to restore the default value.
Configuring Static Routes
Static routes are user-defined routes that cause packets moving between a source and a destination to
take a specified path. Static routes can be important if the router cannot build a route to a particular
destination. They are also useful for specifying a gateway of last resort to which all unroutable packets
are sent.
Beginning in privileged EXEC mode, follow these steps to configure a static route:
Use the no ip route prefix mask {address | interface} global configuration command to remove a static
route.
This is an example of output from the show ip route privileged EXEC command with a static route
configured:
Switch# show ip route
Codes: C - connected, S - static, I - IGRP, R - RIP, M - mobile, B - BGP
D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area
N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2
E1 - OSPF external type 1, E2 - OSPF external type 2, E - EGP
i - IS-IS, L1 - IS-IS level-1, L2 - IS-IS level-2, ia - IS-IS inter area
* - candidate default, U - per-user static route, o - ODR
P - periodic downloaded static route
Gateway of last resort is 172.20.135.193 to network 0.0.0.0
S* 0.0.0.0/0 [1/0] via 172.20.135.193
C 172.20.0.0/14 is directly connected, Vlan1
Command
Purpose
Step 1
configure terminal
Enter global configuration mode.
Step 2
router {rip | ospf | igrp | eigrp}
Enter router configuration mode.
Step 3
maximum-paths maximum
Set the maximum number of parallel paths for the protocol routing
table. The range is from 1 to 8; the default is 4.
Step 4
end
Return to privileged EXEC mode.
Step 5
show ip protocols
Verify the setting in the Maximum path field.
Step 6
copy running-config startup-config
(Optional) Save your entries in the configuration file.
Command
Purpose
Step 1
configure terminal
Enter global configuration mode.
Step 2
ip route prefix mask {address | interface} [distance]
Establish a static route.
Step 3
end
Return to privileged EXEC mode.
Step 4
show ip route
Display the current state of the routing table to verify
the configuration.
Step 5
copy running-config startup-config
(Optional) Save your entries in the configuration file.
