Cisco NCS 5500 Series

(Optional) Requests notification of neighbor changes.
• By default, this feature is enabled.
• The messages generated by neighbor changes are considered notifications, which are categorized as severity Level
5 in the logging console command. The logging console command controls which severity level of messages are
sent to the console. By default, all severity level messages are sent.
Step 5 nsf { cisco [ enforce global ] | ietf [ helper disable ]}
Example:
RP/0/RP0/CPU0:router(config-ospf)# nsf ietf
(Optional) Configures NSF OSPF protocol.
The example enables graceful restart.
Step 6 timers throttle spf spf-start spf-hold spf-max-wait
Example:
RP/0/RP0/CPU0:router(config-ospf)# timers throttle spf 500 500 10000
(Optional) Sets SPF throttling timers.
Step 7 area area-id
Example:
RP/0/RP0/CPU0:router(config-ospf)# area 1
Enters area configuration mode.
The area-id argument can be entered in dotted-decimal or IPv4 address notation, such as area 1000 or area 0.0.3.232.
However, you must choose one form or the other for an area. We recommend using the IPv4 address notation.
Step 8 interface type interface-path-id
Example:
RP/0/RP0/CPU0:router(config-ospf-ar)# interface TenGigE0/5/0/0
Enters interface configuration mode and associates one or more interfaces to the area.
Step 9 security ttl [ disable | hops hop-count ]
Example:
RP/0/RP0/CPU0:router(config-ospf-ar-if)# security ttl hopes 2
Sets the security TTL value in the IP header for OSPF packets.
Step 10 commit
Step 11 show ospf [ process-name ] [ area-id ] interface [ type interface-path-id ]
Example:
RP/0/RP0/CPU0:router# show ospf 1 interface TenGigE0/5/0/0
Routing Configuration Guide for Cisco NCS 5500 Series Routers, IOS XR Release 6.3.x
100
Implementing OSPF
Configure Generalized TTL Security Mechanism (GTSM) for OSPF