From: CCIE Hunter (cisco.ccie.guru@gmail.com)
Date: Wed Aug 06 2008 - 04:34:26 ART
Some customer want to manage their own IP Addresses on MPLS VPN environemnt.
And they also still want to use Private IP Addresses. To prevent overlapping
customer addresses spaces BGP/MPLS VPN convert nonunique IP addresses into
unique address by using VPN-IPV4 addressfamily.
HTH
---------- Forwarded message ----------
From: shady darwish <engshad.shady@gmail.com>
Date: Wed, Aug 6, 2008 at 3:06 PM
Subject: Re: address-family
To: CCIE Hunter <cisco.ccie.guru@gmail.com>
can anyone be mmore simple int that
On Wed, Aug 6, 2008 at 10:41 AM, CCIE Hunter <cisco.ccie.guru@gmail.com>
wrote:
> Hi, as my per understanding...
>
> it use under BGP. let's say you are at provider PE router. And there is
your
> customer router CE. But your PE is not only connected to one CE. It might
be
> a few more CE connected to one PE. And you gonna use eBGP peering between
yr
> PE and CEs. At that moment you have to be split out customer routing
> information at PE. So you have to use VRF on PE. So you have to configure
> eBGP peering from PE to each customer under specific address-family vrf.
>
> another example is in MPLS vpn environment
> there is core MPLS backbone. your 2 PEs connect acorss MPLS backbone and
> want to advertise customer routing information each other. At that
situation
> you have to use BGP address-family vpnv4 between 2 PEs. I believe that is
> for the extension of BGP to carry customer prefixes with vpnv4 lables. But
> MPLS core don't need to lookup these vpnv4 lables.
> There are a few option that can use with address-family eg.like
> address-family ipv4,ipv6 or vpnv4.
>
> That's all what I understand. Correct me if i am wrong. for exact theory
of
> address-family you can find on a lot of cisco press books.
>
> Regards
>
>
>
>
> On Wed, Aug 6, 2008 at 5:39 AM, <yungli2008@gmail.com> wrote:
>
>> Hi Experts
>> I am confused in BGP address-family concept. Can anyone guide me to
>> understand
>> the concept.
>> I really appreciate your input
>> Advance thanks
>> Li
>>
>>
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>>
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>
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