Posted on September 28, 2020 7:49 pm
 |  Asked by Kevin Malone
 |  99 views
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I have a factory reset arista 7010t I wanted to use for a project runing version 4.23.0F.  Upon bootup i’m receiving the error message “Sep 28 17:47:02 localhost StrataCentral: %CAPACITY-1-UTILIZATION_HIGH: IFP-Slice-1-Linecard0/0 table utilization is currently at 94%, crossed threshold 90%”.

My question is why is my utilization full when this is a factory reset and fresh switch?  It’s litterally doing nothing and something is already full?  I have attached what I beleive to be relivant info.  Please help?

 

 

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Posted by Sreelekha
Answered on September 29, 2020 4:07 am

Hi Kevin,

Thanks for writing to us.

Due to a cosmetic bug we see this log on 7010 and few other models when they come up after a reload/upgrade. This is due to the transient state of EOS during the initial boot up.

Bug details:https://www.arista.com/en/support/software-bug-portal/bugdetail?bug_id=412165

This is purely cosmetic if you see this only during the boot-up, unless you see the log repeating even after the switch is up for a few hours.

Cheers!
Sreelekha

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Answered on September 29, 2020 5:17 am

Hi Kevin,

Thanks for reaching out.

IFP Slice-0 and Slice-1 are utilized by the system.

IFP is used for Ingress IPV4/V6 ACLs, PBRs, etc and this model(7010T) has 16 slices capable of 256 entries each.

Once the system has detected that a slice is full, it will automatically select a new available slice to use next. Currently, your device is reporting that slice-1 is 94% full. Since we still have 15 other slices that are not full and overall IFP usage is only around 10% these logs is not a concern and we can ignore the above log msgs safely.

However if there are completely no usable Slices that PBR/ACL's/other features can use to program additional entries, then those entries would remain unprogrammed due to TCAM slice exhaustion.

Thanks,

Bhavana.

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Posted by Kevin Malone
Answered on September 30, 2020 6:53 pm

I understand, thank you.  It is a little alarming during a clean boot up to see something report as full.  I would think a warning would only be displayed once all slices are full?  Like if it reported on the overall IFP usage and not the individual slices.

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Answered on October 1, 2020 2:23 am

Hi Kevin,

Thank you for your response.

This is purely cosmetic issue after the initial bootup (or) after upgrade.

By default, for TCAM tables, hardware capacity default thresholds are 90% for every slice in every stage, which causes a message to be logged whenever each slice reaches 90% utilization.

Also there is a way to disable the logging alert with the following command:

switch(conf)#hardware capacity alert table ifp feature all threshold 0 <---- Here 0 means 'disable the logging'

Incase if we issue the above command then it won't generate the logging alert even if last available slice gets fully consumed.

Thanks,

Bhavana,

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Posted by Kevin Malone
Answered on October 1, 2020 8:34 pm

got it, thanks for the info!

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