Concerning MPLS paths

Mon Apr 27 12:50:07 UTC 2009

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