Giuseppe Larosa Thu, 09/04/2008 - 00:58
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Hello Arup,

you need a modern classless IGP like OSPF, IS-IS or EIGRP (but this doesn't support MPLS Traffic Eng.)

you need to allocate loopbacks interfaces on all routers use /32 ( masks they will represent each node. loopback ip addresses must be unique.

advertise the loopbacks ip addresses in your IGP.

You need to enable CEF

ip cef

mpls ip

mpls label protocol ldp

mpls router-id loop1 force

on each interface you want to configure for MPLS switching (backbone facing ones)

int type x/y

mpls ip

be aware that if you plan to delivery MPLS L3 VPN services you need to take care of mtu problems.

on some older IOS releases you need to use

tag-switching instead of mpls in the commands.

A reference can be the following:

this is for C7600 but provides info for all platforms

Hope to help


arupbiet2006 Thu, 09/04/2008 - 01:06
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hi Giuseppe,

have u any radymade configure on MPLS in 3750G

Marwan ALshawi Thu, 09/04/2008 - 01:06
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what requiremnt and what topology u have ?


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