Configuring Ospf - Cisco ME 3400 Software Configuration Manual

Configuring OSPF

Beginning in privileged EXEC mode, follow these steps to set an interface to advertise a summarized
local IP address and to disable split horizon on the interface:
Command
Step 1 configure terminal
Step 2
interface interface-id
Step 3
no shutdown
Step 4
ip address ip-address subnet-mask
Step 5 ip summary-address rip ip address ip-network mask Configure the IP address to be summarized and the IP
Step 6 no ip split horizon
Step 7 end
Step 8
show ip interface interface-id
Step 9
copy running-config startup-config
To disable IP summarization, use the no ip summary-address rip router configuration command.
In this example, the major net is 10.0.0.0. The summary address 10.2.0.0 overrides the autosummary
address of 10.0.0.0 so that 10.2.0.0 is advertised out interface Gigabit Ethernet port 2, and 10.0.0.0 is
not advertised. If the interface is in Layer 2 mode (the default), you must enter a no switchport interface
configuration command before entering the ip address interface configuration command.
Note If split horizon is enabled, neither autosummary nor interface summary addresses (those configured with
the ip summary-address rip router configuration command) are advertised.
Switch(config)# router rip
Switch(config-router)# interface gi0/2
Switch(config-if)# no switchport
Switch(config-if)# ip address 10.1.5.1 255.255.255.0
Switch(config-if)# ip summary-address rip 10.2.0.0 255.255.0.0
Switch(config-if)# no ip split-horizon
Switch(config-if)# exit
Switch(config)# router rip
Switch(config-router)# network 10.0.0.0
Switch(config-router)# neighbor 2.2.2.2 peer-group mygroup
Switch(config-router)# end
Configuring OSPF
Open Shortest Path First (OSPF) is an Interior Gateway Protocol (IGP) designed expressly for IP
networks, supporting IP subnetting and tagging of externally derived routing information. OSPF also
allows packet authentication and uses IP multicast when sending and receiving packets.
This section briefly describes how to configure O SPF. For a complete description of the OSPF
commands, see the "OSPF Commands" chapter of the Cisco IOS IP Command Reference, Volume 2 of
3: Routing Protocols, Release 12.2.
Cisco ME 3400 Ethernet Access Switch Software Configuration Guide
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Chapter 35
Purpose
Enter global configuration mode.
Enter interface configuration mode, and specify the Layer 3
interface to configure.
Enable the interface if necessary. By default, UNIs and ENIs
are disabled and NNIs are enabled.
Configure the IP address and IP subnet.
network mask.
Disable split horizon on the interface.
Return to privileged EXEC mode.
Verify your entries.
(Optional) Save your entries in the configuration file.
Configuring IP Unicast Routing
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