On Wed, Jan 31, 2007 at 07:37:10PM -0200, Persio Pucci wrote: > I am troubleshooting some frame-relay circuits, and looking for > evidences that can help me calculate a WAN upgrade on the circuits. > What should I be looking at (retransmissions? delay/delta?) and is > there any general formula to apply to those results?
The main thing to look at is bandwidth utilization when upgrading a WAN circuit. Also make sure that you are doing QoS, so that your priority traffic (if any) such as voice/video/certain data is carried across the circuit with minimal delay. QoS will of course cause non-priority traffic to be delayed even more so you can look at response times of applications/services across the WAN circuit, which is where Wireshark could come in. Check our the Statistics menu to see if there is something applicable to your setup. I would suggest looking at the TCP Stream Graphs Service Response Time sections. The longer distance of a WAN circuit will make a difference in the delay. Finally, no, there are no solid formulas to use ;) Just compare the statistics when the circuit is over-utilized and not to see how bad it gets. Once you start getting noticable delays, it's time to upgrade. That usually starts happening when bandwidth is being maxed out. Steve _______________________________________________ Wireshark-users mailing list Wireshark-users@wireshark.org http://www.wireshark.org/mailman/listinfo/wireshark-users