Administrator Guide

OSPF features and functions are assigned to each router using the CONFIG-INTERFACE commands for each interface.
NOTE: By default, OSPF is disabled.
Configuration Task List for OSPFv2 (OSPF for IPv4)
You can perform the following tasks to configure Open Shortest Path First version 2 (OSPF for IPv4) on the switch. Two of the tasks are
mandatory; others are optional.
• Enabling OSPFv2 (mandatory)
• Assigning a Router ID
• Enabling Multi-Process OSPF
• Assigning an OSPFv2 Area (mandatory)
• Enable OSPFv2 on Interfaces
• Configuring Stub Areas
• Configuring LSA Throttling Timers
• Enabling Passive Interfaces
• Enabling Fast-Convergence
• Changing OSPFv2 Parameters on Interfaces
• Enabling OSPFv2 Authentication
• Creating Filter Routes
• Applying Prefix Lists
• Redistributing Routes
• Troubleshooting OSPFv2
1. Configure a physical interface. Assign an IP address, physical or Loopback, to the interface to enable Layer 3 routing.
2. Enable OSPF globally. Assign network area and neighbors.
3. Add interfaces or configure other attributes.
For a complete list of the OSPF commands, refer to the OSPF section in the Dell Networking OS Command Line Reference Guide
document.
Enabling OSPFv2
To enable Layer 3 routing, assign an IP address to an interface (physical or Loopback). By default, OSPF, similar to all routing protocols, is
disabled.
You must configure at least one interface for Layer 3 before enabling OSPFv2 globally.
If implementing multi-process OSPF, create an equal number of Layer 3 enabled interfaces and OSPF process IDs. For example, if you
create four OSPFv2 process IDs, you must have four interfaces with Layer 3 enabled.
1. Assign an IP address to an interface.
CONFIG-INTERFACE mode
ip address ip-address mask
The format is 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}]
• vrf name: enter the keyword VRF and the instance name to tie the OSPF instance to the VRF. All network commands under this
OSPF instance are later tied to the VRF instance.
The range is from 0 to 65535.
The OSPF process ID is the identifying number assigned to the OSPF process. The router ID is the IP address associated with the
OSPF process.
After the OSPF process and the VRF are tied together, the OSPF process ID cannot be used again in the system.
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Open Shortest Path First (OSPFv2 and OSPFv3)