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Webcast-Catalyst9k
New Member

Generating an OSPF default-route within Area0

Guys,

Are there any rules relating to generating a 0.0.0.0 0.0.0.0 within a backbone area.

As then a BB router would become an ASBR?

Also, is it possible to use a redist static to acheive the same result. On testing I cant seem to acheive that.

Many thx indeed,

Ken

router ospf 10

log-adjacency-changes

network 10.0.0.0 0.255.255.255 area 0

default-information originate

!

ip classless

ip route 0.0.0.0 0.0.0.0 10.192.67.2

!

S2Rtr1#sh ip int brief

Interface IP-Address OK? Method Status Protocol

FastEthernet0/0 10.192.66.1 YES NVRAM up up

Serial0/0 unassigned YES NVRAM administratively down down

BRI0/0 unassigned YES NVRAM administratively down down

BRI0/0:1 unassigned YES unset administratively down down

BRI0/0:2 unassigned YES unset administratively down down

FastEthernet0/1 10.192.67.1 YES NVRAM up up

Serial0/1 unassigned YES NVRAM administratively down down

Hssi1/0 10.192.1.2 YES NVRAM up up

S2Rtr1#

1 ACCEPTED SOLUTION

Accepted Solutions
Cisco Employee

Re: Generating an OSPF default-route within Area0

I can't think of a good reason why a core router couldn't be an ASBR and inject the default route in the ospf domain. I have seen many customer doing it.

The only way to inject the default route in ospf is to use the "default-information originate" statement. The redistribute static won't do it.

Hope this helps,

Harold Ritter
Sr. Technical Leader
CCIE 4168 (R&S, SP)
harold@cisco.com
México móvil: +52 1 55 8312 4915
Cisco México
Paseo de la Reforma 222
Piso 19
Cuauhtémoc, Juárez
Ciudad de México, 06600
México
2 REPLIES
Cisco Employee

Re: Generating an OSPF default-route within Area0

I can't think of a good reason why a core router couldn't be an ASBR and inject the default route in the ospf domain. I have seen many customer doing it.

The only way to inject the default route in ospf is to use the "default-information originate" statement. The redistribute static won't do it.

Hope this helps,

Harold Ritter
Sr. Technical Leader
CCIE 4168 (R&S, SP)
harold@cisco.com
México móvil: +52 1 55 8312 4915
Cisco México
Paseo de la Reforma 222
Piso 19
Cuauhtémoc, Juárez
Ciudad de México, 06600
México
New Member

Re: Generating an OSPF default-route within Area0

many thx indeed :)

Ken

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