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Rule- defALL_TARGET_PORTSRX_90 triggered on Brocade switch port

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

Applies to

Brocade switch

Issue

  • RX utilization reaching high and Rule-defALL_TARGET_PORTSRX_90 triggered in errdump.
  • Sfpshow output reports both Tx and Rx power in the recommended range.

=============
Slot  3/Port 27:
=============
RX Power:    -0.8    dBm (833.4uW)
TX Power:    -0.6    dBm (877.8 uW)

 

  • Porterrshow does not report any errors as the stats were cleared  before uploading the logs.

/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
139:    3.6g   52.7g    0       0       0       0       0       0       0       0       0       0       0       0       0       0       0       0       0

phy_stats_clear_ts         03-04-2024 IST Mon 05:02:54      Timestamp of phy_port stats clear
lgc_stats_clear_ts         03-04-2024 IST Mon 05:02:54      Timestamp of lgc_port stats clear
fec_corrected_rate  0                FEC Corrected blocks per second


Errdump log reports Rule- defALL_TARGET_PORTSRX_90 being triggered.

2024/03/04-11:21:48 (IST), [MAPS-1003], 58286, SLOT 1 | FID 128 | PORT 3/27, WARNING, Switch, slot3 port27, F-Port 3/27, Condition=ALL_TARGET_PORTS(RX/hour>90), Current Value:[RX, 96.12 %], RuleName=defALL_TARGET_PORTSRX_90, Dashboard Category=Fabric Performance Impact, Quiet Time=None.
2024/03/04-12:21:48 (IST), [MAPS-1003], 58335, SLOT 1 | FID 128 | PORT 3/27, WARNING, Switch, slot3 port27, F-Port 3/27, Condition=ALL_TARGET_PORTS(RX/hour>90), Current Value:[RX, 94.56 %], RuleName=defALL_TARGET_PORTSRX_90, Dashboard Category=Fabric Performance Impact, Quiet Time=None.


• MAPS (Fabric Performance Impact) output, reports the utilization on the affected port very high (>90%) .

3.2 Rules Affecting Health:
===========================

Category(Violation Count)|RepeatCount|Rule Name                  |Execution Time   |Object           |Triggered Value(Units)|
-----------------------------------------------------------------------------------------------------------------------------

|1          |defALL_TARGET_PORTSRX_90   |03/04/24 12:21:48|F-Port 3/27      |94.56 %               |
|1          |defALL_TARGET_PORTSRX_90   |03/04/24 11:21:48|F-Port 3/27      |96.12 %               |
|1          |defALL_TARGET_PORTSRX_90   |03/04/24 10:21:48|F-Port 3/27      |90.02 %               |


|10         |defALL_TARGET_PORTSRX_90   |03/02/24 19:25:46|F-Port 3/27      |93.11 %               |
|           |                           |                 |F-Port 3/27      |96.33 %               |
|           |                           |                 |F-Port 3/27      |96.04 %               |
|           |                           |                 |F-Port 3/27      |96.66 %               |
|           |                           |                 |F-Port 3/27      |94.65 %               |
|8          |defALL_TARGET_PORTSRX_90   |03/01/24 18:36:46|F-Port 3/27      |94.07 %               |
|           |                           |                 |F-Port 3/27      |94.23 %               |
|           |                           |                 |F-Port 3/27      |94.46 %               |
|           |                           |                 |F-Port 3/27      |90.27 %               |
|           |                           |                 |F-Port 3/27      |91.51 %               |

|4          |defALL_TARGET_PORTSRX_90   |02/29/24 22:14:44|F-Port 3/27      |90.04 %               |
|           |                           |                 |F-Port 3/27      |90.49 %               |
|           |                           |                 |F-Port 3/27      |90.28 %               |
|           |                           |                 |F-Port 3/27      |90.20 %               |

 
 
  • portstatsshow output shows very high value for the paratmeter "tim_txcrd_z", which is again a clear indication of the port being over utilized.
  • The "tim_txcrd_z "(Time TX Credit Zero (2.5Us ticks))parameter in the "portstatshow" command output  tells us the number of times, the port was unable to transmit frames because the transmit BB (buffer-to-buffer)credit was zero.

portstatsshow 139
stat_wtx                867666061134        4-byte words transmitted
stat_wrx                26321977934672      4-byte words received
stat_ftx                3698664129          Frames transmitted
stat_frx                52747160766         Frames received
stat_c2_frx             0                   Class 2 frames received
stat_c3_frx             1209135573          Class 3 frames received
stat_lc_rx              0                   Link control frames received
stat_mc_rx              0                   Multicast frames received
stat_mc_to              0                   Multicast timeouts
stat_mc_tx              0                   Multicast frames transmitted
tim_txcrd_z             40540643            Time TX Credit Zero (2.5Us ticks)

 

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