Cisco Support Community
Showing results for 
Search instead for 
Did you mean: 

Welcome to Cisco Support Community. We would love to have your feedback.

For an introduction to the new site, click here. If you'd prefer to explore, try our test area to get started. And see here for current known issues.

New Member

PIX 501 Stability

Hi everyone

I use a PIX 501 as a VPN Concentrator for a few remote workers. This has been working fine, but for some reason it has become unstable over the last few weeks

The PIX becomes unstable, and cannot be pinged either internally or connected to externally (via VPN)

The lights on the front of the PIX are flashing in a very "specific" way, as if they are trying to tell me something (but I dont know what!!)

Unplugging the PIX and plugging it back in resolves the issue (until next time!)

My questions are:

1) How can I find out what the light flashing sequence means?

2) How can I enable tracing to see what was going on?

3) Has anyone got any ideas??

Thanks in advance for your help!!

  • Other Security Subjects

Re: PIX 501 Stability

have a look at this doc:

further, connect to the pix via console to start with. i suggest you to do "sh int" and then try to ping inside host and the internet.

New Member

Re: PIX 501 Stability

I have noticed a power connection issue with the 501's that may be responsible for what you are seeing. Any shifting of the chassis or power cord causes the PIX to reboot - this might be the 'flashing' of the lights that you are seeing.

We have taken to securing the chassis and cord to prevent this issue.

Re: PIX 501 Stability

I confirm the post from Craiq Coffey. The Power connector in some 501 and 506 are really unstable and can on a micro fibration get instable when power plug moves a little bit.

This is easy to check. Move the power connector on the PIX 501 a little bit if the all lights turn on, then you have the source of your problem.

Replace the device if you have a Smart Net (Warranty).



This widget could not be displayed.