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

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

For an introduction to the new site, click here. And see here for current known issues.

New Member

Cisco 7206VXR error

Hi,

I am using Cisco 7206VXR, NPE-G1 engine. However, I am getting the following:

%BCM-4-ECC_L2CACHE: Corrected ECC from L2 cache

Can I know what did it mean? Can I know where to check this log?

2 REPLIES
New Member

Re: Cisco 7206VXR error

%BCM-4-ECC_L2CACHE: Corrected ECC from L2 cache

This message indicates a soft-parity error from the Layer 2 cache has been detected and

corrected.

Normal system operation should continue. These errors occur when an energy

level within the chip (for example, a one or a zero) changes, most often due to cosmic

radiation or Electromagnetic Induction (EMI).

When referenced by the CPU, such errors cause the system to either crash (if the error is

in an area that is not recoverable) or they recover other systems (for example, a CyBus

complex restarts if the error was in the

packet memory (MEMD)).

In case of a soft parity error, there is no need to swap the board

or any of the components.

Studies have shown that soft parity errors are 10 to 100 times more frequent than hard

parity errors. Therefore, Cisco highly recommends you to wait for a second parity error

before you replace anything. This greatly reduces the impact on your network.

The best option would be to monitor the router for next 24Hrs. If this error repeats

immensely in such a way that it impacts the network or crashes the router then you can go

for hardware replacement (NPE and it's memory).

Otherwise if things remains fine for 24hrs. Then we can consider it to be a SEU (single

event upset).

Hope it helps!

Regards,

Juan

New Member

Re: Cisco 7206VXR error

%BCM-4-ECC_L2CACHE: Corrected ECC from L2 cache

This message indicates a soft-parity error from the Layer 2 cache has been detected and

corrected.

Normal system operation should continue. These errors occur when an energy

level within the chip (for example, a one or a zero) changes, most often due to cosmic

radiation or Electromagnetic Induction (EMI).

When referenced by the CPU, such errors cause the system to either crash (if the error is

in an area that is not recoverable) or they recover other systems (for example, a CyBus

complex restarts if the error was in the

packet memory (MEMD)).

In case of a soft parity error, there is no need to swap the board or any of the components.

Studies have shown that soft parity errors are 10 to 100 times more frequent than hard

parity errors. Therefore, Cisco highly recommends you to wait for a second parity error before you replace anything. This greatly reduces the impact on your network.

The best option would be to monitor the router for next 24Hrs. If this error repeats

immensely in such a way that it impacts the network or crashes the router then you should start thinking on getting the replacement of the NPE and memory.

Otherwise if things remains fine for 24hrs. Then we can consider it to be a SEU (single

event upset).

Please rate if helpful.

1261
Views
6
Helpful
2
Replies