On Apr 28, 2009, at 4:51 AM, Saqib Ilyas wrote:
Anyone?
On Mon, Apr 27, 2009 at 6:15 PM, Saqib Ilyas <msa...@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?
It clearly depends on what that traffic is.
The MPLS services I am most familiar with carry video traffic, with
traffic patterns that look very different from the typical web site
(generally the traffic is either on or off, there is very little
"burstiness," there can be long periods of basically full usage of the
available bandwidth and, if you commit to X Mbps, you had better
actually have it, not X - epsilon). I would guess that this is one end
of the spectrum, that bursty web traffic is the other, and that most
other uses (such as VOIP) fall somewhere in between.
Regards
Marshall
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 <msa...@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.mcc...@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 <msa...@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
Regards
Marshall Eubanks
CEO / AmericaFree.TV