MPLS

Unanswered Question
Nov 21st, 2007
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Hi ,


Can some one please expalin me wht is MPLS and how many types MPLS can be configured. What do we configure on the Customer Router, Customer Edge Router, Provider Router and provider Edge Router.


Any help on this will be highly appreciated.


Regards,

Akber.

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nikhil.engineer Thu, 11/22/2007 - 00:26
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MPLS supports IPv4, ipv6 and label switching is used to route the packets instead of destination based forwarding.MPLS is layer 2.5 protocol.It is called so cos layer 2 and layer 3 headers are kept intact.

Benefits of MPLS are:-

BGP free core.

IP over ATM integration.

Traffice Engineering.

MPLS has become popular because of its support for wide range of application.

To configure MPLS you require following things:-

cef to be enabled

mpls enabled on required interface

Ldp or tdp enabled.

Please go through below link to know more about MPLS.

http://www.cisco.com/univercd/cc/td/doc/product/software/ios124/124cg/hmp_c/part05/index.htm


HTH.

Cheers,

Nikhil E.

cisco_lad2004 Thu, 11/22/2007 - 08:44
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with regards to what to configure where, here it is:


1-P Router : Provider, does not need BGP but must have MPLS.


2-PE Router: Provider Edge, must have MPLS + BGP.


3-CE Router : Customer Edge, no MPLS. but u may choose to use IGPs and static to connect to PE. however, BGP is the most common way to connect PE and CE.

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