Desktop

Ask something
Discussion Locked

DLC Slow over Ethernet versus Token Ring

0 helpful
3 replies

by dkpalmer

Closed to new repliesThis discussion is closed. It stays readable, but it takes no new replies.

We have multiple web servers running SNA using DLC over both Ethernet and Token Ring. Response times for the Ethernet servers are up to 10 times longer than response times for Token Ring servers ( 2-5 seconds for Token Ring versus 20-50 seconds for Ethernet ). Sniffers show no traffic congestion or bandwidth issues - the problem "appears" to be internal to the server: i.e., the communication between the NIC and the application. We can see data being returned to the server, but the application does not respond for up to 50 seconds.
Does anyone know of any specific issues related to SNA/DLC over Ethernet being slower than over Token Ring?

3 replies

by duwaned

There are some known issues with running SNA across an Ethernet and Token Ring environment. Are you connecting accross a Cisco router? If so, this TechNet article may be of some use to you: Q159462

I hope this helps.
Regards.
Duwane.

by dkpalmer

We are using a Cisco router,and checked this out. As it turns out, the issue was not the SNA link but the Antivirus program McShield.Even with scanning turned off, it was causing a very significant performance slowdown. We're working with NA to resolve the problem.
Thanks for the response. I'm giving you the points for helping me eliminate the only other issue I could think of.

This discussion is closed to new replies.