[c-nsp] MPLS Migration over 7204VXR

[r.sahney]

Hi Bep,

My apologies for he lack of clarity , as i had short time then will try and 
make it more precise now , some details to help u to help me..

- yes we will be moving from E1z to MPLS , (core wan) as it will be far more 
cost effective and stable for us.

- We will be surrendering the IPLCs , and we need to have about 10 Mbps of 
connectivity from the ISP in the ratio of abt 4:6 for 2 sites.

-The two sites are connected via fiber and the ISP is in he middle of my 2 
locations and the total distance is less that 1 km in all.
(local) Site 1 ---------6 core Fiber -------------------Site 2 (local)
ISP
So the first concern is options for Physical connectivity to ISP.?
- Ethernet or leased circuits will surely be my concern due to cost.

- the MPLS will be ISP managed.
 - I still cannot comment about exchanging routing updates, bcoz i dont have 
the exact plan.
 - The isp provides connectivity over 10000 series as well as 72xx series.
  thx again for your response, i will pitchin more info as soon as i get it.
 Regards
Raja 

On 5/4/05, Bruce Pinsky <bep at whack.org> wrote:
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> r.sahney wrote:
> | Hi All,
> |
> | I currently have 2 7204VXR with NPE-G1 with single PA-8T-V.35
> | . running 2 IP Lease circuits on 1 and 1 Lease Circuit on other with
> | G5485 SX connectors for ethernet, running 12.3(3b).
> |
> | We will be migrating to MPLS shortly, Since I m not an expert with the
> | migration phase , I would apprecaite a help with any of the following
> | -
> |
> 
> Converting in what sense? Are you switching from private line T1's between
> sites to MPLS/VPN?
> 
> | 1 What are the options available with me to connect to the service
> | provider via MPLS ?
> |
> 
> Connection in what sense? Physical? Link layer? Routing protocol?
> 
> Will the connection be provider-managed CE or self-managed?
> 
> | 2 Will this require any kind of hardware change ? If so what can be my
> options ?
> |
> 
> Probably not, but depends on what your provider is offering.
> 
> | 3 Any white papers or docs that could explain this transition or any
> | practical guidelines to migrate this network over mpls ?
> |
> 
> Nit, but you're probably not migrating this network to run over MPLS I'd
> guess. You are switching to using an MPLS/VPN service. When folks say
> they are "converting to MPLS", I take that to mean they are replacing 
their
> IP network core with an MPLS network core which I don't get the sense you
> are doing.
> 
> I don't know of any generic papers since how you connect will be dictated
> by the manner in which the provider offers the service. Your router may be
> ethernet connected to their managed CE device or you may have one or more
> T1's into their PE device(s). You may run a routing protocol to exchange
> routes or it could be statically routed. Lots of possibilities.
> 
> | 4 Any technical limitations that you might be aware of ?
> |
> 
> What particularly are you concerned about? Depending on the implementation
> by the provider, their ability to provide you redundancy (if you need it)
> can be a concern. QOS through the provider network is also something that
> you may/may not need or be concerned about.
> 
> | Just for the info. i have gained a basic understanding of mpls over
> | last few days and well aware with concepts of vpn, TE , Qos etc. but
> | right now my objective is to look at commercialy and technically
> | scalable migration.
> |
> 
> The thing about MPLS/VPN is that the complexity of the implementation is
> hidden from the end user. The provider manages all the details and from
> the CE point of view, they are simply IP connected to the provider and
> possibly exchanging routes via BGP or an IGP. That's one reason it's an
> attractive alternative to self-managed private connections.
> 
> - --
> =========
> bep
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