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PCS error reported on Brocade switch port with Rx and Tx well within the recommended range

  1. Last updated
    Jun 16, 2025
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Votes:
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Category:
fabric-interconnect-and-management-switches
Specialty:
brocade
Last Updated:
6/16/2025, 3:00:39 PM

Applies to

Brocade switches

Issue

  • PCS errors observed on switch ports:
/fabos/cliexec/porterrshow :
          frames     enc    crc    crc    too    too    bad    enc   disc   link   loss   loss   c3timeout   pcs   uncor
       tx     rx     in    err    g_eof  shrt   long   eof     out   c3    fail    sync   sig    tx    rx     err    err         

172:  276    165      0      3      2      0      0      1      0      0      2      0      2       0    0     89.7m   0
  • Tx and RX power are well within the recommended range: 

=============
Slot  5/Port 28:
=============
RX Power:    -6.9    dBm (689.9uW) ​​​​​​
TX Power:    -1.1    dBm (784.2 uW)

  •  2025/02/19-23:27:51 (IST), [MAPS-1003], 785375, SLOT 2 | FID 128 | PORT 6/47, WARNING, NTTC_X6_107_FAB1, slot6 port47.switch1.10.227.204.177.switch1, F-Port 6/47, Condition=ALL_HOST_PORTS(ITW/min>21), Current Value:[ITW, 512 ITWs], RuleName=defALL_HOST_PORTSITW_21, Dashboard Category=Port Health, Quiet Time=None."

 

 

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