[c-nsp] Help with simple QoS configuration

[Fred Reimer]

Why the .1q link between the 3548XL and the 2811?  Are there
other customers on other VLANs on the 3548XL that also get
trunked to the 2811?  The proper place to start QoS would be on
the 3548XL switch.  However, the QoS capabilities of that switch
are limited, IIRC, so you may need to replace that antiquated
equipment.  Note I said earlier that the proper place to start
QoS is on the 3548XL.  In order to truly obtain QoS and bandwidth
guarantee you need QoS on each and every hop through your whole
network.  That means allocating whatever you promise the customer
on every link from their connection point to your hand-off point.

Fred Reimer, CISSP, CCNP
Senior Network Engineer
Coleman Technologies, Inc.
954-298-1697




-----Original Message-----
From: cisco-nsp-bounces at puck.nether.net
[mailto:cisco-nsp-bounces at puck.nether.net] On Behalf Of Sascha E.
Pollok
Sent: Wednesday, November 07, 2007 8:16 AM
To: cisco-nsp at puck.nether.net
Subject: [c-nsp] Help with simple QoS configuration

Folks,

maybe someone could push me into the right direction
for some QoS related stuff. We have a setup like this:

       7206VXR    |  100M  |c2811|   .1q   | 3548XL |
    Access Router | ------ | CPE | ------- | Switch | VLAN x

>From right to left: a public IP network is connected to
a switch. The VLAN on this access port is terminated on
a Cisco 2811's Sub-I/F. The 2811 has a 100M link to
an access-router (7206VXR). I need to give the customer
connected via VLAN x a bandwidth guarantee on the 100M link
in both directions. Since there is no NAT in place, we are
able to match on source/dest IPs.

I guess I would need to configure service-policies but I am
unsure about where exactly to configure them on the 2811
and/or on the 7206VXR. I tried class-based policies on the
Sub-I/F of the 2811 but it said that those aren't supported
there.

Anyone with an example configuration or something like this?

Thanks
Sascha
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