PurposeCommand or Action
into the OSPFv3 routing domain is the Type 1 external
route.
RPL is not supported for OSPFv3.
Note
(Optional) Creates aggregate addresses for OSPF.Do one of the following:
Step 5
or
• summary-prefix address mask [ not-advertise ]
[ tag tag ]
(Optional) Creates aggregate addresses for OSPFv3.
• summary-prefix ipv6-prefix / prefix-length [
not-advertise ] [ tag tag ]
• This command provides external route summarization
of the non-OSPF routes.
Example:
• External ranges that are being summarized should be
contiguous. Summarization of overlapping ranges from
RP/0/RP0/CPU0:router(config-ospf)# summary-prefix
10.1.0.0 255.255.0.0
two different routers could cause packets to be sent to
the wrong destination.
or
• This command is optional. If you do not specify it,
each route is included in the link-state database and
advertised in LSAs.
RP/0/RP0/CPU0:router(config-router)# summary-prefix
2010:11:22::/32
• In the OSPFv2 example, the summary address 10.1.0.0
includes address 10.1.1.0, 10.1.2.0, 10.1.3.0, and so
on. Only the address 10.1.0.0 is advertised in an
external LSA.
• In the OSPFv3 example, the summary address
2010:11:22::/32 has addresses such as
2010:11:22:0:1000::1, 2010:11:22:0:2000:679:1, and
so on. Only the address 2010:11:22::/32 is advertised
in the external LSA.
commit
Step 6
Configuring OSPF Shortest Path First Throttling
This task explains how to configure SPF scheduling in millisecond intervals and potentially delay SPF
calculations during times of network instability. This task is optional.
SUMMARY STEPS
1. configure
2. Do one of the following:
• router ospf process-name
• router ospfv3 process-name
3. router-id { router-id }
4. timers throttle spf spf-start spf-hold spf-max-wait
5. area area-id
Routing Configuration Guide for Cisco NCS 6000 Series Routers, IOS XR Release 6.4.x
299
Implementing OSPF
Configuring OSPF Shortest Path First Throttling
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