Concerning MPLS paths

Saqib Ilyas msaqib at gmail.com
Tue Apr 28 03:51:02 CDT 2009


Anyone?


On Mon, Apr 27, 2009 at 6:15 PM, Saqib Ilyas <msaqib at gmail.com> wrote:

> Furthermore, I was also wondering, if the bandwidth constraints are upper
> bounds, what does the traffic distribution typically look like at an LSR?
> We're interested in traffic within a single service provider, non-Internet
> traffic. Perhaps most service providers set aside some (dynamic?) pool for
> Internet traffic, while making commitments to customer's inter-site traffic.
> Thanks and best regards
>
>
> On Mon, Apr 27, 2009 at 5:50 PM, Saqib Ilyas <msaqib at gmail.com> wrote:
>
>> William
>> Thanks for the reply. You say that LSPs are not static unless you use TE
>> tunnels. Are you referring to the staticness in terms of the path or in the
>> amount of bandwidth reserved on each link along a fixed path determined at
>> the time of signalling? Isn't a bandwidth constrained LSP always a TE
>> tunnel?
>> Thanks and best regards
>>
>>
>> On Mon, Apr 27, 2009 at 5:41 PM, William McCall <william.mccall at gmail.com
>> > wrote:
>>
>>> Well, yes (if you don't count the additional traffic of
>>> signalling/routing protocols, label imposition, etc) but consider the fact
>>> that topologies change and routing will tend to change the total traffic
>>> handled through a node. LSPs are not static unless you use TE tunnels.
>>> Remember that labels are Forwarding Equivalency Classes and that translates
>>> into subnets (whether they're subnets in a L3 vpn or part of the P network)
>>> and the routing is still handled through an IGP or BGP.
>>>
>>> HTH
>>>
>>> --WJM IV
>>>
>>>
>>> On Mon, Apr 27, 2009 at 7:10 AM, Saqib Ilyas <msaqib at gmail.com> wrote:
>>>
>>>> Hello everyone
>>>> In the context of a single service provider network running MPLS, if a
>>>> number of bandwidth constrained LSPs are passing through a particular
>>>> node
>>>> and the sum of the bandwidth constraints for the LSPs is X Mb/s, then is
>>>> X
>>>> the upper bound on the traffic through that node, or is it sometimes
>>>> exceeded as well?
>>>> Thanks and best regards
>>>>
>>>
>>>
>>
>>
>> --
>> Muhammad Saqib Ilyas
>> PhD Student, Computer Science and Engineering
>> Lahore University of Management Sciences
>>
>
>
>
> --
> Muhammad Saqib Ilyas
> PhD Student, Computer Science and Engineering
> Lahore University of Management Sciences
>



-- 
Muhammad Saqib Ilyas
PhD Student, Computer Science and Engineering
Lahore University of Management Sciences



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