Solved

Internet speed reduction through switch

Posted on 2009-07-14
4
330 Views
Last Modified: 2013-12-14
I have installed a new Comcast Business Class connection at my office.  I have put a PIX firewall behind the Comcast modem and a new Netgear GB switch on the other side of the PIX.  When I connect my laptop directly to the eth0 port on the PIX I get 21Kbps.  When I connect my laptop to the swtich I get less than 3Kbps.  Can anyone tell me what I'm doing wrong?  Thanks!  
0
Comment
Question by:terry_cole
  • 2
4 Comments
 
LVL 17

Accepted Solution

by:
mikecr earned 250 total points
ID: 24855296
If you're connecting yourself to the ethernet0 port on the firewall, I'm assuming your using a crossover cable. If you plug into the switch you're using a straight through cable. The speed problem may be coming from a mismatched speed/duplex issue with your computer negotiating with the switch. If you have a managed switch, set your port speed to 100/full on the switch and on your workstation and see if you have any problems then. If you still have issues, do the same between Ethernet0 on the firewall and the switch. This should resolve your problem.
0
 
LVL 7

Expert Comment

by:thegof
ID: 24855985
Try swapping out the cables.  GB ethernet requires tigher specs and you may have a marginal cable.  The marginal cable may work for the 100Mbit link speed, but may be causing ton's of errors at the 1000Mbit links speed resulting in lots of retries (and thus signal delays). You might see these retries as an overall reduced thoughput.
0
 

Author Comment

by:terry_cole
ID: 24857862
The port speed/dplx on the switch that the firewall was plugged into was set to "Auto".  Cisco says the PIX is 100/Full so I set the port manually to force the 100/Full and the speed came up to what I was expecting.  Thanks!
0
 
LVL 17

Expert Comment

by:mikecr
ID: 24864809
No problem, you're very welcome!
0

Featured Post

PRTG Network Monitor: Intuitive Network Monitoring

Network Monitoring is essential to ensure that computer systems and network devices are running. Use PRTG to monitor LANs, servers, websites, applications and devices, bandwidth, virtual environments, remote systems, IoT, and many more. PRTG is easy to set up & use.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Suggested Solutions

I recently had the displeasure of buying a new firewall at one of the buildings I play Sys Admin at. I had to get a better firewall than the cheap one that I had there since I was reconnecting the main office to the satellite office via point-to-poi…
Network traffic routing plays key role in your network, if you have single site with heavy browsing or multiple sites, replicating important application data from your Primary Default Gateway ,you have to route your other network traffic from your p…
Migrating to Microsoft Office 365 is becoming increasingly popular for organizations both large and small. If you have made the leap to Microsoft’s cloud platform, you know that you will need to create a corporate email signature for your Office 365…
Video by: Mark
This lesson goes over how to construct ordered and unordered lists and how to create hyperlinks.

910 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question

Need Help in Real-Time?

Connect with top rated Experts

17 Experts available now in Live!

Get 1:1 Help Now