Install Guide

● Assigning an OSPFv2 Area (mandatory)
● Enable OSPFv2 on Interfaces
● Configuring Stub Areas
● 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.
4. Set the time interval between when the switch receives a topology change and starts a shortest path first (SPF) calculation.
Use timers spf delay holdtime
NOTE: To set the interval time between the reception of topology changes and calculation of SPF in milli seconds, use
the timers spf delay holdtime msec command.
Example
DellEMC#
DellEMC#conf
DellEMC(conf)#router ospf 1
DellEMC(conf-router_ospf-1)#timer spf 2 5 msec
DellEMC(conf-router_ospf-1)#
DellEMC(conf-router_ospf-1)#show config
!
router ospf 1
timers spf 2 5 msec
DellEMC(conf-router_ospf-1)#
DellEMC(conf-router_ospf-1)#end
DellEMC#
For a complete list of the OSPF commands, refer to the OSPF section in the Dell EMC 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}]
Open Shortest Path First (OSPFv2 and OSPFv3)
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