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Continual link resets (LR) occurring against Brocade switch port

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5,035
Visibility:
Public
Votes:
8
Category:
fabric-interconnect-and-management-switches
Specialty:
brocade
Last Updated:

Applies to

  • All Brocade FC switch platforms
  • All Brocade Fabric OS firmware levels

Issue

  • Link resets on one port are reported:

2020/09/01-09:22:48 (CET), [C5-1014], 2001, CHASSIS | PORT 0/13, WARNING, BrocadeG720,  Link Reset on Port S0,P13(52) vc_no=0 crd(s)lost=5 auto trigger.

  • Continual link resets (LR) reported by MAPS on port # as indicated in errdump -a:
2020/09/01-14:54:34, [MAPS-1003], 796, FID 128, WARNING, brocade_switch, onpom_fc0, F-Port 13, Condition=ALL_F_PORTS(LR/min>=1), Current Value:[LR, 2], RuleName=CNLV_CMPLNT_LR, Dashboard Category=Port Health.
2020/09/01-15:16:53, [LOG-1000], 798, FID 128, INFO, brocade_switch, Previous message repeated 2 time(s).
2020/09/01-15:20:34, [MAPS-1003], 799, FID 128, WARNING, brocade_switch, onpom_fc0, F-Port 13, Condition=ALL_F_PORTS(LR/min>=1), Current Value:[LR, 2], RuleName=CNLV_CMPLNT_LR, Dashboard Category=Port Health.
2020/09/01-15:46:53, [LOG-1000], 802, FID 128, INFO, brocade_switch, Previous message repeated 3 time(s).
2020/09/01-15:46:58, [MAPS-1003], 803, FID 128, WARNING, brocade_switch, onpom_fc0, F-Port 13, Condition=ALL_F_PORTS(LR/min>=1), Current Value:[LR, 4], RuleName=CNLV_CMPLNT_LR, Dashboard Category=Port Health.
2020/09/01-15:56:10, [MAPS-1003], 804, FID 128, WARNING, brocade_switch, onpom_fc0, F-Port 13, Condition=ALL_F_PORTS(LR/min>=1), Current Value:[LR, 2], RuleName=CNLV_CMPLNT_LR, Dashboard Category=Port Health.
2020/09/01-16:01:22, [MAPS-1003], 805, FID 128, WARNING, brocade_switch, onpom_fc0, F-Port 13, Condition=ALL_F_PORTS(LR/min>=1), Current Value:[LR, 4], RuleName=CNLV_CMPLNT_LR, Dashboard Category=Port Health.
2020/09/01-16:16:53, [LOG-1000], 806, FID 128, INFO, brocade_switch, Previous message repeated 1 time(s).
2020/09/01-16:23:40, [MAPS-1003], 807, FID 128, WARNING, brocade_switch, onpom_fc0, F-Port 13, Condition=ALL_F_PORTS(LR/min>=1), Current Value:[LR, 4], RuleName=CNLV_CMPLNT_LR, Dashboard Category=Port Health.
 
  • Verifying porterrshow reports excessive link fail counters :

          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
376:  298.7k 501.9k   0      0      0      0      0      0      0      0      9.9k   0      0      0      0      0      0      0      0

  • Interrupts, lli, proc_rqrd, lr_in, lr_out, ols_in, ols_out increasing in portshow:

portshow 13
portDisableReason: None
portCFlags: 0x1
portFlags: 0x24b03     PRESENT ACTIVE F_PORT G_PORT U_PORT LOGICAL_ONLINE LOGIN NOELP LED ACCEPT FLOGI
LocalSwcFlags: 0x0
portType:  26.0
POD Port: Port is licensed
portState: 1    Online   
Protocol: FC
portPhys:  6    In_Sync      portScn:   32    F_Port    
port generation number:    93268
state transition count:    92939      

portId:    0a0d00
portIfId:    43020034
portWwn:   20:0d:88:94:71:b1:69:c0
portWwn of device(s) connected:
    21:00:00:24:ff:1d:8c:e2
16b Area list:
Distance:  normal
portSpeed: N16Gbps

FEC: Inactive
Credit Recovery: Inactive
Aoq: Inactive
FAA: Inactive
F_Trunk: Inactive
LE domain: 0
Peer beacon: Off
FC Fastwrite: OFF
Interrupts:        9909       Link_failure: 3          Frjt:         0          
Unknown:           0          Loss_of_sync: 0          Fbsy:         0          
Lli:               9909       Loss_of_sig:  0          
Proc_rqrd:         211621     Protocol_err: 0          
Timed_out:         0          Invalid_word: 0          
Tx_unavail:        0          Invalid_crc:  0          
Delim_err:         0          Address_err:  0          
Lr_in:             4914       Ols_in:       4877       
Lr_out:            4877       Ols_out:      4914 

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