Networking Question

Hi,

I have a question on network optimization. I work at a company that
has a corporate office. Our local division has a T1 and VPN through
the AT&T network. We have Cisco routers and switches. The router is
a 2811 and I believe the switches are 2950. Our corporate office is
supposed to handle the major networking issues so I'm limited with
what I can actually do.

We experience two issues. Our main issue is response time from a
telnet application. This application is used by everyone and is
critical to our work environment. Not critical as in "We lose money/
people die every time this thing slows down" but it's a major concern
whenever the thing lags. And it does lag throughout the day.

The server hosting the application is at our corporate office. Our
Exchange server is also at the corporate office.

The telnet app would periodically lag horribly throughout the day.
When it's working well you can type with a barely noticeable delay.
When it's bad, you're typing a bit and then waiting for it to catch
up. We complained but our corporate network guy said we weren't even
using our full T1 line. So, I did a a little investigation during two
verified lag time periods and found that our response times can go
from 40 ms to 450+ ms when things are bad. For example, a user
running a program that needs to grab large bits of information from
the Internet. I guess whatever report they run shows our bandwidth is
fine but telnet is sensitive.

Is there anything we can do? I'd thought we'd be able to set some
policies on the router that would throttle Internet traffic in favor
of telnet traffic but the corporate office (supposedly) tried this and
the users still complained at response times. Well, that and websites
timing out left and right.

Advice, please!
.

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