Here's a question (or 3)....

My T-1 router is routing at "wire speed" due to the fact that the
routing is hardware based, not software based.

If you use software to do bandwidth limiting, you are therefore doing
software routing, and in effect slowing down your overall speed.

My questions are this:

1. Is there a way to measure exactly how much latency is added by doing
software based routing??

2. Which of all the different types of bandwidth limiting software is
the fastest?

I have also enabled both firewall filters (stateless) and the stateful
firewall within my T-1 router.  This is obviously software based and
therefore is already slowing my line speed down.  I am sure it is
negligible...but the reason I bring it up is this.  

3. Being that I am already using software based products in line
(firewalls), would adding the software based routing (bandwidth
limiting) add to that latency or be negligible??

I truthfully don't have a clue on how to measure this down to the level
where it would truly show the difference in speeds.  I also don't know
if or when it would ever matter?!?!?


Sully



-----Original Message-----
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of Lars Gaarden
Sent: Wednesday, August 13, 2003 6:08 AM
To: [EMAIL PROTECTED]
Subject: Re: [smartBridges] Bandwidth Limiting Software

Greg Sims wrote:

> The smartBridge system doesn't seem to have a way to limit the
bandwidth
> available to any specific client.

If you are familiar with Linux, and are comfortable with the command
line and recompiling kernels, you can use the built-in bandwidth
control features of the Linux kernel - http://lartc.org/howto/
In addition, you might take a look at arbi -
http://www.apconnections.net/

Microtik supports bandwidth control. I believe it only includes the
same features you can get for free with Linux, but it comes in a
preconfigured package, and Eje provides good support. ;-)

The *BSDs also include bandwith management features for free - ALTQ.

At least some Cisco routers have built-in support for bandwith
control.

Etinc is definately an option - good price, lots of features. However,
if you buy the software only package expect to spend some time on
reading the documentation, because support isn't included (and Dennis
will tell you so in rather rough terms).
http://www.etinc.com/

And then you have Allot, Packeteer, Sitara, Lightspeed, Radware,
Checkpoint Floodgate and lots of others.

-- 
LarsG

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