MPLS and ATM connectivity

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Jul 22nd, 2008
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hi ,


Can any one tell me how ATM and MPLS works interms of technolgy.


Few basic diffrences are required and which one is preferred in stablity and cost.


Thanks ,

Akber Mirza.

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lee.reade Wed, 07/23/2008 - 00:03
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Hi,


ATM is now a legagcy technology and it would be best to steer away from that if rolling out new infrastructure.


MPLS over ATM, is a way of running MPLS switching across your exisiting ATM infrastructure, it uses the VPI/VCI ATM cell header to forward MPLS packets through the core instead of using ATM cells natively.


Heres a link to have a look at.


http://www.cisco.com/en/US/tech/tk436/tk798/technologies_tech_note09186a008017492a.shtml


HTH


LR

cisco_lad2004 Wed, 07/23/2008 - 12:16
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I suggested using frame based MPLS instead of cell based.

essentially, when you configure your VPI/VCI link have it a layer 3 subnet (/30 for example) and then tag switch on the link.

This way you will have a simpler setup, specialy if u wish to migrate top Ethernet later on.


HTH


Sam

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