Why Experts Exchange?

Experts Exchange always has the answer, or at the least points me in the correct direction! It is like having another employee that is extremely experienced.

Jim Murphy
Programmer at Smart IT Solutions

When asked, what has been your best career decision?

Deciding to stick with EE.

Mohamed Asif
Technical Department Head

Being involved with EE helped me to grow personally and professionally.

Carl Webster
CTP, Sr Infrastructure Consultant
Ask ANY Question

Connect with Certified Experts to gain insight and support on specific technology challenges including:

Professional Opinions
Ask a Question
Did You Know?

We've partnered with two important charities to provide clean water and computer science education to those who need it most. READ MORE

troubleshooting Question

Gigabit good but 100M and 10M very slow

Avatar of wzn
wzn asked on
Networking Hardware-OtherSwitches / Hubs
10 Comments1 Solution416 ViewsLast Modified:
I work in a 30 workstations company.

I've replaced an old hub on which every one was connecting at 100M / Half duplex for a brand new Allied telesys gigabit switch model AT-GS950/48

Everything seemed to be working fine, but some users began complaining about slow startup time of a network application.

Upon investigation, I discovered that every workstation connected at 100M Full (or below) gets very erratic connection speed, moving from 6Mbytes/sec to under 300Kbytes/sec, back and forth all the time.

Gigabit connections on the other hand, gets very stable speed over 30Mbytes/sec.

The Internet connection is going through a pfSense router which is splitting it in 3 VLANs.

The switch is in production now, so I have little lattitude in terms of testing. Any idea what the problem is?

Thanks in advance.
Avatar of that1guy15
that1guy15Flag of United States of America image

Our community of experts have been thoroughly vetted for their expertise and industry experience.

This problem has been solved!
Unlock 1 Answer and 10 Comments.
See Answers