Slow transfer speeds on PIX506e

Unanswered Question
Apr 10th, 2009
User Badges:

Hello all,

I'm having an issue with my PIX506e.

I have a 15M/2M connection to my ISP but my download speeds are only 3M and my upload speeds are only 1M once I installed my PIX. I tried resetting to factory defaults and all that jazz. I hope there isn't a limitation as to how fast of a connection you can have with my PIX. Anyway.. I hope someone has an easy, or not so easy, fix for me.


  • 1
  • 2
  • 3
  • 4
  • 5
Overall Rating: 0 (0 ratings)
m-jankowski Sat, 04/11/2009 - 05:38
User Badges:

bump... sorry... but I'd really like to know why my $1500 router isn't performing the way it should.


m-jankowski Sun, 04/12/2009 - 12:09
User Badges:

I've tested with a smoothwall router... and my laptop plugged straight into the cable modem. Both get between 13-15mb/s... pix is only getting 3mb/s.

I've checked duplex settings, errors, everything... went through cisco's troubleshooting page for performance and can't seem to figure it out.

Kevin Brennan Sun, 04/12/2009 - 12:39
User Badges:
  • Bronze, 100 points or more


What is on the LAN side on the PIX?

Could you post your config?

What are you using to measure the throughput of the PIX?


m-jankowski Sun, 04/12/2009 - 14:42
User Badges:

LAN side is two 8 port Netgear gigabit switches and a NG WAP.

I'm using and to measure, but transferring files to and from my dedicated hosting server is another way I was testing.

Kevin Brennan Tue, 04/14/2009 - 00:41
User Badges:
  • Bronze, 100 points or more


Without seeing your PIX config, there's not much more to do.

I would say though, that those web based speed tests are not accurate.

What I would suggest is that you try putting a host on both sides of your PIX and using iperf (or something similar) to test the real throughput of your PIX.


m-jankowski Tue, 04/14/2009 - 05:00
User Badges:

I understand they can be inacurate. But going from 15M to 3M on it pretty much says it. It has the option of testing multiple servers, which I have, and I've also used my dedicated hosting server, which has a 100mb connection to several different networks.

I will post the config when I get home later, but it's the basic configuration that comes when you apply the defaults.

I would upgrade my PDM to see if that fixes it, but I don't have a support license with Cisco.


This Discussion