Re: IPv6 ebgp unicast peeirng using ipv4 ir ipv6?

Cheers, Brian,

 that make sense now, so from functionality point of veiw if question asks
fir IPv6 unicast peering I can use both ipv6 or ipv4 neighbor addresses?

Thanks

On Sun, Jul 15, 2012 at 3:45 AM, Brian McGahan <bmcgahan_at_ine.com> wrote:

> Using a single IPv4 session saves control plane overhead. The idea is
> that since you already have a BGP session setup with IPv4, you can use that
> to advertise the NLRI for other applications. It's the same as like
> sending IPv4 Multicast, VPNv4, VPNv6, etc. over the IPv4 peering. Like you
> said though in regular IOS you need to make sure that the route recursion
> towards the next-hop is correct by setting the next-hop manually with a
> route-map. Not all versions allow you to do this though, due to the order
> of operations of where the route-map sits in comparison to the inbound
> next-hop validation check of the BGP process.
>
> Brian McGahan, CCIE #8593 (R&S/SP/Security)
> bmcgahan_at_INE.com
>
> Internetwork Expert, Inc.
> http://www.INE.com
>
>
> -----Original Message-----
> From: Brian McGahan
> Sent: Saturday, July 14, 2012 10:41 AM
> To: 'jeremy co'
> Subject: RE: IPv6 ebgp unicast peeirng using ipv4 ir ipv6?
>
> Using a single IPv4 session saves control plane overhead. The idea is
> that since you already have a BGP session setup with IPv4,
>
> Brian McGahan, CCIE #8593 (R&S/SP/Security) bmcgahan_at_INE.com
>
> Internetwork Expert, Inc.
> http://www.INE.com
>
> -----Original Message-----
> From: nobody_at_groupstudy.com [mailto:nobody_at_groupstudy.com] On Behalf Of
> jeremy co
> Sent: Saturday, July 14, 2012 7:50 AM
> To: Cisco certification
> Subject: IPv6 ebgp unicast peeirng using ipv4 ir ipv6?
>
> Hi Guys,
>
> Can someone explain that what is the difference between ipv6 unicast
> peering using ipv4 and ipv6?
>
>
> with IPv4 neighbor address on IOS next hop of IPv6 routes needs to be
> changed manually.
> with IPv6 neighbor address , NH of ipv6 routes are correct.
>
>
> Any other differences?
>
> When to use each of them?
>
>
> Cheers!
>
> Jeremy
>
>
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Received on Sun Jul 15 2012 - 13:53:59 ART