From: Kris Keen (kkeen@bigpond.net.au)
Date: Mon Oct 21 2002 - 12:37:01 GMT-3
Hi Peter
Its used within MPLS/VPN enviroments and is generally configured on a PE
(Provider edge), think of an address family as seperate BGP tables, which
are used to contain routes from a particular source, or as they say VRF.
This basically allows a router to become multiple routers, each holding many
VRF's or address familys. I configure these quite alot at work (we have
heaps on some of the routers). Routes are injected at the PE into these
tables, these routes are tagged and EXPORTED/sent across a backbone (label
switched) , the recieving PE will IMPORT a particular set of routes
(generally the routes that were imported from the same customer) which are
then entered into the BGP table.
The PE routers are then attached via various methods to CE (customer edge
routers) which accept routes from the PE for that VRF, the book mentioned
below goes into various VPN topologies.
The address family allows you to esentially run multiple BGP tables, all
totally seperate, you define neighbors, redistribute commands and so on.
A good read on this is MPLS and VPN Arche by Pepelnjak (Cisco Press)
Thats in a nutshell, I'm not usually one to explain things so its my first
attempt :)
Chers
Kris
----- Original Message -----
From: "Peter" <peter@cyscoexpert.com>
To: <ccielab@groupstudy.com>
Sent: Tuesday, October 22, 2002 12:12 AM
Subject: Re: address-family
> It is used with MPLS/VPN.
>
> __________________________
> Peter
> #7247 (R&S, Security)
> CyscoExpert Corp.
> 4433 W. Touhy Ave. Suite 410
> Lincolnwood, IL 60712
> Phone (847) 674-3392
> Fax (847) 674-2625
>
>
> ----- Original Message -----
> From: "Persio Pucci" <persiopucci@uol.com.br>
> To: <ccielab@groupstudy.com>
> Sent: Monday, October 21, 2002 8:29 AM
> Subject: address-family
>
>
> > Hi folks!!!
> >
> > Can anybody explain to me what does the "address-family [ipv4 | vpnv4]
> etc"
> > command actually does? When to use it and how to?
> >
> > Regards,
> >
> > Persio
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