Administrator Guide
Enabling OSPFv2 Authentication
To enable or change various OSPF authentication parameters, use the following commands.
• Set a clear text authentication scheme on the interface.
CONFIG-INTERFACE mode
ip ospf authentication-key key
Congure a key that is a text string no longer than eight characters.
All neighboring routers must share password to exchange OSPF information.
• Set the authentication change wait time in seconds between 0 and 300 for the interface.
CONFIG-INTERFACE mode
ip ospf auth-change-wait-time seconds
This setting is the amount of time OSPF has available to change its interface authentication type.
During the auth-change-wait-time, OSPF sends out packets with both the new and old authentication schemes.
This transmission stops when the period ends.
The default is 0 seconds.
Enabling OSPFv2 Graceful Restart
Graceful restart is enabled for the global OSPF process.
For more information, refer to Graceful Restart.
The Dell Networking implementation of OSPFv2 graceful restart enables you to specify:
• grace period — the length of time the graceful restart process can last before OSPF terminates it.
• helper-reject neighbors — the router ID of each restart router that does not receive assistance from the congured router.
• mode — the situation or situations that trigger a graceful restart.
• role — the role or roles the congured router can perform.
NOTE
: By default, OSPFv2 graceful restart is disabled.
To enable and congure OSPFv2 graceful restart, use the following commands.
1 Enable OSPFv2 graceful-restart globally and set the grace period.
CONFIG-ROUTEROSPF- id mode
graceful-restart grace-period seconds
The seconds range is from 40 and 3000.
This setting is the time that an OSPFv2 router’s neighbors advertises it as fully adjacent, regardless of the synchronization state,
during a graceful restart. OSPFv2 terminates this process when the grace period ends.
2 Enter the Router ID of the OSPFv2 helper router from which the router does not accept graceful restart assistance.
CONFIG-ROUTEROSPF- id mode
graceful-restart helper-reject router-id
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Open Shortest Path First (OSPFv2 and OSPFv3)