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saswins
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Are IPv6 Secondary addresses routable?

Sat Jul 27, 2013 6:42 pm

Hi,

If I have both Primary and Secondary IPv6 address on one interface and enabled ospf3 on that interface. Will both the addresses be advertised to neighbor router??

thanks,

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Re: Are IPv6 Secondary addresses routable?

Sat Jul 27, 2013 7:31 pm

Take a baseball bat and trash all the routers, shout out "IT'S A NETWORK PROBLEM NOW, SUCKERS!" and then peel out of the parking lot in your Ferrari.

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saswins
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Re: Are IPv6 Secondary addresses routable?

Sat Jul 27, 2013 9:24 pm

thanks deanwebb.

Will we follow the same procedure for IPv6 I mean OSPF3 too??

Thanks,
Aswin

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deanwebb
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Re: Are IPv6 Secondary addresses routable?

Sat Jul 27, 2013 10:46 pm

I assume so... give it a go, let us know how it works.
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Re: Are IPv6 Secondary addresses routable?

Sun Jul 28, 2013 5:22 am

IPv6 will work different, that's an IPv4 article. There are no 'secondary' IPv6 addresses on an interface. All are equal, except link local which is used to form the neighborship. If you've enabled IPv6 on that interface, all addresses (networks) configured on that interface should be propagated.
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deanwebb
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Re: Are IPv6 Secondary addresses routable?

Sun Jul 28, 2013 3:20 pm

I stand corrected. I had a funny feeling those IPv6 addresses in the article were too short... :doh:
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Re: Are IPv6 Secondary addresses routable?

Sun Jul 28, 2013 3:32 pm

OSPFv3 changed a few things from v2, partly because of the departure of "secondary" IPs. OSPFv3 uses per-link processing and not per subnet as OSPFv2, which means that two adjacent routers doesnt even have to be in the same subnet since the link-local addresses will be used.
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saswins
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Re: Are IPv6 Secondary addresses routable?

Sun Jul 28, 2013 7:39 pm

Thanks for the info...I tired it ospf3 and as Reggle said it propagated the secondary address too

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Re: Are IPv6 Secondary addresses routable?

Mon Jul 29, 2013 2:49 am

saswins wrote:Thanks for the info...I tired it ospf3 and as Reggle said it propagated the secondary address too


No it didn't. As Reggle said, there is no concept of secondary addresses. What happened was that both IPv6 addresses were put into the IGP database. Both addresses. Not the primary and secondary


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