Configure Ospfv2 Ospf Spf Prefix Prioritization - Cisco NCS 5500 Series Configuration Manuals

Implementing OSPF
prefix-set ospf-medium-prefixes
0.0.0.0/0 ge 32
end-set

Configure OSPFv2 OSPF SPF Prefix Prioritization

Perform this task to configure OSPFv2 OSPF SPF (shortest path first) prefix prioritization.
SUMMARY STEPS
1. configure
2. prefix-set prefix-set name
3. route-policy route-policy name if destination in prefix-set name then set spf-priority {critical |
high | medium} endif
4. Use one of these commands:
5. router ospf ospf name
6. spf prefix-priority route-policy route-policy name
7. commit
8. show rpl route-policy route-policy name detail
DETAILED STEPS
Step 1 configure
Step 2
prefix-set prefix-set name
Example:
RP/0/RP0/CPU0:router(config)#prefix-set ospf-critical-prefixes
RP/0/RP0/CPU0:router(config-pfx)#66.0.0.0/16
RP/0/RP0/CPU0:router(config-pfx)#end-set
Configures the prefix set.
Step 3
route-policy route-policy name if destination in prefix-set name then set spf-priority {critical | high | medium}
endif
Example:
RP/0/RP0/CPU0:router#route-policy ospf-spf-priority
RP/0/RP0/CPU0:router(config-rpl)#if destination in ospf-critical-prefixes then
set spf-priority critical
endif
RP/0/RP0/CPU0:router(config-rpl)#end-policy
Configures route policy and sets OSPF SPF priority.
If all /32s are desired in the high-priority queue or medium-priority queue, configure this single route
map:
• router ospf ospf-name
• router ospfv3 ospfv3-name
Routing Configuration Guide for Cisco NCS 5500 Series Routers, IOS XR Release 6.3.x
Configure OSPFv2 OSPF SPF Prefix Prioritization
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