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gullio23
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ospf infinite cost of some route help

Wed Sep 25, 2013 11:02 am

hi guys,
i have a problem about some route installing in ospf as infinite cost.

to let you help me much better i'm attaching the network architecture.

all link are point-to-point ospf and are /30 network.

pppoe server redistribute with internet2 all pppoe dynamic interface installed as ext1(all ok) but when i let firewall2 join ospf area 1 all pppoe routes are seen on ospf route as infinite.the same thing happened on the other pppoe and internet1.

the strange thing is that all 2 cisco 3550 see the ospf route correctly...

let me know if i miss something important.

BR
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CelticComms
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Re: ospf infinite cost of some route help

Wed Sep 25, 2013 2:59 pm

Infinite cost can be used a s a way to clear out routes. Have a look at the LSAs and see who is originating the infinite cost entries.
 
gullio23
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Re: ospf infinite cost of some route help

Wed Sep 25, 2013 4:38 pm

thanks for reply, but i have not set the infinite cost..then i cannot understand why are installed as infinite, infact the same route is infinite on ccr and normal(cost 110) on cisco.
what i want to understand: is normal to have this inifinite route or is an error on architecture or some other bugs?

Thanks again
BR
 
CelticComms
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Re: ospf infinite cost of some route help

Wed Sep 25, 2013 4:49 pm

OSPF itself can generate infinite cost entries - some transient and some permanent. Hard to say which you are seeing without more config details.
 
gullio23
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Re: ospf infinite cost of some route help

Thu Sep 26, 2013 10:04 pm

what detail you need? i can send it to you if you have the time to help me.

Thanks a lot

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