Re: MPLS L3 VPN

This made me think, what 'address-family' means when i hear it...

I immediatetly go to MBGP and the AFI/SAFI output from the cli:

R1#sh bgp ?
  all All address families
  ipv4 Address family
  ipv6 Address family
  nsap Address family
  vpnv4 Address family
R1#sh bgp ipv4 ?
  multicast Address Family modifier
  unicast Address Family modifier
R1#sh bgp ipv6 ?
  multicast Address Family modifier
  unicast Address Family modifier
R1#sh bgp vpnv4 ?
  unicast Address Family Modifier

So i thought i would go through the configuration guide to look for the
'address-family' in each protocol BGP, OSPF, EIGRP and RIP (sticking to R&S
blueprint stuff so no IS-IS)...

The first link is my initial thoughts when i hear 'address-family' and MPLS
L3VPN, CE-PE...

And the link for 'Configuration Examples for MPLS VPNs' is the first place i
always go when setting it up...

It seems some of the config guides on the doccd are pretty slim on vrf,
mpls, l3vpn setup information, but other have decent information, and some
IGPs use 'address-family' EIGRP and RIP, OSPF using a separate process ID...

Cisco BGP Address Family Model

http://www.cisco.com/en/US/docs/ios/iproute_bgp/configuration/guide/irg_overview_ps6441_TSD_Products_Configuration_Guide_Chapter.html#wp1054143

Information About OSPF Support for Multi-VRF on CE Routers

http://www.cisco.com/en/US/docs/ios/iproute_ospf/configuration/guide/iro_sup_vrf_ps6441_TSD_Products_Configuration_Guide_Chapter.html#wp1054087

EIGRP Autonomous System Configuration

http://www.cisco.com/en/US/docs/ios/iproute_eigrp/configuration/guide/ire_cfg_eigrp_ps6441_TSD_Products_Configuration_Guide_Chapter.html#wp1060015

Exchange of Routing Information (RIP)

http://www.cisco.com/en/US/docs/ios/iproute_rip/configuration/guide/irr_cfg_rip_ps6441_TSD_Products_Configuration_Guide_Chapter.html#wp1061185

Configuration Examples for MPLS VPNs

http://www.cisco.com/en/US/docs/ios/mpls/configuration/guide/mp_cfg_layer3_vpn_ps6441_TSD_Products_Configuration_Guide_Chapter.html#wp1059243
 --
Garry L. Baker

"With sufficient thrust, pigs fly just fine..." - RFC 1925

On Wed, Jun 1, 2011 at 7:28 PM, marc edwards <renorider_at_gmail.com> wrote:

> Good afternoon experts. I had a question about the exact use of
> address-family. At first, I assumed it was used to carry the vpnv4
> information but this doesn't seem to be the case. I appears to be used
> to carry the routing information of the CE across PE network? Can this
> be used under all IGP's?
>
> Thanks greatly for clarification.
>
> Marc Edwards DCNISS
> http://reno-ccie.blogspot.com
>
>
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Received on Wed Jun 01 2011 - 20:08:19 ART