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Brocade FC port offline with No_Sync state and -inf TX power

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Category:
fabric-interconnect-and-management-switches
Specialty:
brocade
Last Updated:

Applies to

  • Brocade FC Switch
  • Fabric OS (FOS)

Issue

  • Brocade fiber channel port is in No_sync state with multiple link failure ,sync_loss and pcs errors reported on the porterrshow.

/fabos/bin/switchshow :
Index Slot Port Address Media  Speed        State    Proto
============================================================
 347   10   43   65d3c0   id    AN       No_Sync     FC  

/fabos/cliexec/porterrshow :
          frames      enc    crc    crc    too    too    bad    enc   disc   link   loss   loss   frjt   fbsy  c3timeout    pcs    uncor
       tx     rx      in    err    g_eof  shrt   long   eof     out   c3    fail    sync   sig                  tx    rx     err    err
347:  343      0      0      0      0      0      0      0      3      0    244    246      3      0      0      0      0      363K      0   

  • Brocade fiber channel port is in No_sync and Disabled state

Index Port Address  Media Speed   State       Proto
==================================================
  0   0   010000   id    N16      No_Sync     FC  Disabled

 

  • In sfpshow XX (where XX is the sfp number) TX indicates -inf 

=============
Slot  3/Port  0:
=============
Identifier:  3    SFP
Connector:   7    LC
Transceiver: 6804404000000000 8,16,32_Gbps M5 sw Short_dist
Encoding:    6    64B66B 

.............................................

RX Power: -0.1 dBm (987.2uW)
TX Power: -inf dBm (0.0 uW)
 

  • Errdump may log errors related to port resets

        2023/03/01-13:10:37, [C3-1014], 2269, CHASSIS, WARNING, Brocade6505, Link Reset on Port S0,P0(0) vc_no=0 crd(s)lost=12   auto trigger. 2023/03/01-13:10:45, [C3-1014], 2270, CHASSIS, WARNING, Brocade6505, Link Reset on Port S0,P0(0) vc_no=0   crd(s)lost=12 auto trigger. 
  • ITW errors observed for the port in errdump:

2023/01/06-00:33:20, [MAPS-1003], 514473, SLOT 1 | FID 128, WARNING, Sify_X6_104_FAB2, slot12 port47, F-Port 12/47, Condition=ALL_HOST_PORTS(ITW/min>21), Current Value:[ITW, 36624 ITWs], RuleName=defALL_HOST_PORTSITW_21, Dashboard Category=Port Health.
2023/01/06-00:34:20, [MAPS-1003], 514475, SLOT 1 | FID 128, WARNING, Sify_X6_104_FAB2, slot12 port47, F-Port 12/47, Condition=ALL_HOST_PORTS(ITW/min>21), Current Value:[ITW, 36526 ITWs], RuleName=defALL_HOST_PORTSITW_21, Dashboard Category=Port Health.
2023/01/06-00:35:20, [MAPS-1003], 514480, SLOT 1 | FID 128, WARNING, Sify_X6_104_FAB2, slot12 port47, F-Port 12/47, Condition=ALL_HOST_PORTS(ITW/min>21), Current Value:[ITW, 36559 ITWs], RuleName=defALL_HOST_PORTSITW_21, Dashboard Category=Port Health

 

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