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New Member

show interface indicates 18446744073709551615 CRC, OLS, LRR, NOS

Hello Cisco,

I have seen a few cases with what appear to be bogus counter increments on multiple ports for example as follows:

fc2/15 is up

    Port description is VMAX 601194-FA08F1

    Hardware is Fibre Channel, SFP is short wave laser w/o OFC (SN)

    Port WWN is 20:4f:00:0d:ec:2a:11:40

    Admin port mode is F, trunk mode is off

    snmp link state traps are enabled

    Port mode is F, FCID is 0x01001f

    Port vsan is 121

    Speed is 2 Gbps

    Transmit B2B Credit is 20

    Receive B2B Credit is 16

    Receive data field Size is 2112

    Beacon is turned off

    5 minutes input rate 491910485133076760 bits/sec, 61488810641634595 bytes/sec, 61489146735798893 frames/sec

    5 minutes output rate 491912172380660848 bits/sec, 61489021547582606 bytes/sec, 61489146840890389 frames/sec

      18446744022123834516 frames input, 18446645859856220640 bytes

        0 discards, 18446744073709551614 errors

        18446744073709551615 CRC,  0 unknown class

        0 too long, 0 too short

      18446744052814023184 frames output, 18446707443362223868 bytes

        0 discards, 0 errors

      18446744073709551614 input OLS, 18446744073709551615 LRR, 0 NOS, 0 loop inits

      18446744073709551615 output OLS, 0 LRR, 18446744073709551615 NOS, 0 loop inits

      16 receive B2B credit remaining

      20 transmit B2B credit remaining

      20 low priority transmit B2B credit remaining

    Interface last changed at Wed Mar 14 23:26:10 2012

See CRC, OLS, LRR, NOS = 18446744073709551615.

This number equates to 2^64 -1. The maximum possible value of a 64-bit counter?

I would suspect a bug - any known issues or bugs?

NXOS 4.2(7d)

thanks.

3 REPLIES
Cisco Employee

show interface indicates 18446744073709551615 CRC, OLS, LRR, NOS

It looks like a rare cosmetic issue with Gen1 linecards, which go end of support later this year. Does the problem return after clearing the counters?

New Member

show interface indicates 18446744073709551615 CRC, OLS, LRR, NOS

looks ok after clearing

Cisco Employee

show interface indicates 18446744073709551615 CRC, OLS, LRR, NOS

For non-Gen1 linecards, it may be this bug.

CSCud05214  Large FC interface counters

http://tools.cisco.com/Support/BugToolKit/search/getBugDetails.do?method=fetchBugDetails&bugId=CSCud05214&from=summary

Fixed in NX-OS 5.2(8) and above.

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