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Community Member

MPLS

hi friend

could u help me to configure MPLS

4 REPLIES
Hall of Fame Super Silver

Re: MPLS

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 (255.255.255.255) 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:

http://www.cisco.com/en/US/docs/routers/7600/ios/12.2SR/configuration/guide/pfc3mpls.html

this is for C7600 but provides info for all platforms

Hope to help

Giuseppe

Community Member

Re: MPLS

hi Giuseppe,

have u any radymade configure on MPLS in 3750G

Hall of Fame Super Silver

Re: MPLS

Hello Arup,

I think you would need a 3750 metro ethernet

http://www.cisco.com/en/US/docs/switches/metro/catalyst3750m/software/release/12.2_46_se/configuration/guide/swmpls.html

no mpls config chapter for 3750E, I didn't found a link to 3750G

Hope to help

Giuseppe

Re: MPLS

what requiremnt and what topology u have ?

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