Reference Guide

If you try to enter an OSPF process ID, or if you try to enable more OSPF processes than available
Layer 3 interfaces, prior to assigning an IP address to an interface and setting the no shutdown
command, the following message displays:
C300(conf)#router ospf 1
% Error: No router ID available.
Enabling Multi-Process OSPF
Multi-process OSPF allows multiple OSPFv2 processes on a single router.
For more information, refer to Enabling Multi-Process OSPF (IPv4 Only).
When configuring a single OSPF process, follow the same steps previously described. Repeat them as
often as necessary for the desired number of processes. After the process is created, all other
configurations apply as usual.
1. Assign an IP address to an interface.
CONFIG-INTERFACE mode
ip address ip-address mask
Format: A.B.C.D/M.
If you are using a Loopback interface, refer to Loopback Interfaces.
2. Enable the interface.
CONFIG-INTERFACE mode
no shutdown
3. Return to CONFIGURATION mode to enable the OSPFv2 process globally.
CONFIGURATION mode
router ospf process-id [vrf {vrf name}]
The range is from 0 to 65535.
After the OSPF process and the VRF are tied together, the OSPF process ID cannot be used again in
the system.
If you try to enable more OSPF processes than available Layer 3 interfaces, the following message
displays:
C300(conf)#router ospf 1
% Error: No router ID available.
4. Assign the Router ID for the OSPFv2 process.
CONFIG-ROUTER-O SPF-id mode
router-id ip address
ip address: A.B.C.D format.
The Router ID is not required to be the router’s IP address. Dell Networking recommends using the IP
address as the Router ID for easier management and troubleshooting.
666
Open Shortest Path First (OSPFv2)