Cisco catalyst 9407 with C9400-SUP-1XL

[Daniel Blanco]

Good morning !!

We have a pair a Cisco Catalyst 9407 with C9400-SUP-1XL. Connecting between them through 10GB-SR we are receiving the same log frequently :

Sep 22 11:19:15.176: %SFF8472-3-THRESHOLD_VIOLATION: Te2/3/0/1: Rx power high warning; Operating value: -0.5 dBm, Threshold value: -3.0 dBm.
Sep 22 11:19:21.337: %SFF8472-3-THRESHOLD_VIOLATION: Te1/3/0/1: Rx power low warning; Operating value: -22.3 dBm, Threshold value: -19.0 dBm.

We have tested changing SFP´s, fibber´s and version upgrade also .

Release installed is Amsterdam-17.3.4 (Cisco recommended).

Diving in the community with other catalyst model we have seen answers about cosmetic's issues.

Could you help us !!

Thank you very much in advanced.

Best Regards

[balaji.bandi]

what kind of fibre single or multi-mode?

show interface  te 2/3/0/1   trans detail ( also other one)

if you remove the Fibre patch from the port, is the still giving errors?

if this all done still issue, this could be a BUG since you are running the latest code 17.3.3 not reported any issues, there was some issue with the old code.

if this is not affecting operational impact and port running as expected, raise a TAC case to investigate for you.

[Daniel Blanco]

Hello !!

- Here the output :

#show interface TenGigabitEthernet1/3/0/2 transc detail
ITU Channel not available (Wavelength not available),
Transceiver is internally calibrated.
mA: milliamperes, dBm: decibels (milliwatts), NA or N/A: not applicable.
++ : high alarm, + : high warning, - : low warning, -- : low alarm.
A2D readouts (if they differ), are reported in parentheses.
The threshold values are calibrated.

High Alarm High Warn Low Warn Low Alarm
Temperature Threshold Threshold Threshold Threshold
Port (Celsius) (Celsius) (Celsius) (Celsius) (Celsius)
--------- ----------------- ---------- --------- --------- ---------
Te1/3/0/2 35.3 75.0 70.0 0.0 -5.0

High Alarm High Warn Low Warn Low Alarm
Voltage Threshold Threshold Threshold Threshold
Port (Volts) (Volts) (Volts) (Volts) (Volts)
--------- ----------------- ---------- --------- --------- ---------
Te1/3/0/2 3.28 3.63 3.46 3.13 2.97

High Alarm High Warn Low Warn Low Alarm
Current Threshold Threshold Threshold Threshold
Port Lane (milliamperes) (mA) (mA) (mA) (mA)
--------- ---- --------------- ---------- --------- --------- ---------
Te1/3/0/2 N/A 40.3 70.0 68.0 2.0 1.0

Optical High Alarm High Warn Low Warn Low Alarm
Transmit Power Threshold Threshold Threshold Threshold
Port Lane (dBm) (dBm) (dBm) (dBm) (dBm)
--------- ---- --------------- ---------- --------- --------- ---------
Te1/3/0/2 N/A -2.1 3.5 0.5 -8.2 -12.2

Optical High Alarm High Warn Low Warn Low Alarm
Receive Power Threshold Threshold Threshold Threshold
Port Lane (dBm) (dBm) (dBm) (dBm) (dBm)
--------- ---- --------------- ---------- --------- --------- ---------
Te1/3/0/2 N/A -40.0 3.5 0.5 -14.1 -18.4

- We have tested with SMF and MMF with the same behaviour.

- About disconnect the cabling we have not checked it, but we was changing SFP and these were the outputs :

*Sep 22 11:06:56.722: %TRANSCEIVER-6-INSERTED: Chassis 1 R0/0: iomd: transceiver module inserted in TenGigabitEthernet1/3/0/3
*Sep 22 11:06:57.976: %STACKMGR-1-DUAL_ACTIVE_CFG_MSG: Chassis 2 R0/0: stack_mgr: Dual Active Detection link is available now
*Sep 22 11:06:58.480: %STACKMGR-1-DUAL_ACTIVE_CFG_MSG: Chassis 1 R0/0: stack_mgr: Dual Active Detection link is available now
*Sep 22 11:06:59.974: %LINK-3-UPDOWN: Interface TenGigabitEthernet2/3/0/3, changed state to up
*Sep 22 11:07:00.478: %LINK-3-UPDOWN: Interface TenGigabitEthernet1/3/0/3, changed state to up
*Sep 22 11:07:00.974: %LINEPROTO-5-UPDOWN: Line protocol on Interface TenGigabitEthernet2/3/0/3, changed state to up
*Sep 22 11:07:01.478: %LINEPROTO-5-UPDOWN: Line protocol on Interface TenGigabitEthernet1/3/0/3, changed state to up
*Sep 22 11:07:09.851: %SFF8472-3-THRESHOLD_VIOLATION: Te1/3/0/3: Rx power high warning; Operating value: 0.0 dBm, Threshold value: -3.0 dBm.

Many thanks !!

[Leo Laohoo]

---

@Daniel Blanco wrote:

Sep 22 11:19:15.176: %SFF8472-3-THRESHOLD_VIOLATION: Te2/3/0/1: Rx power high warning; Operating value: -0.5 dBm, Threshold value: -3.0 dBm.
Sep 22 11:19:21.337: %SFF8472-3-THRESHOLD_VIOLATION: Te1/3/0/1: Rx power low warning; Operating value: -22.3 dBm, Threshold value: -19.0 dBm.

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What type of optics are used on both sides?  
Is this VSS pair connected using SX and LH optics?

[Daniel Blanco]

Sorry, but there isn´t  VSS configured. Optics used are :

SR-10GB and LR-10GB

Thank you !!

[Leo Laohoo]

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@Daniel Blanco wrote:

Sorry, but there isn´t  VSS configured.

---

What is going to Ten 1/3/0/1 and Ten 2/3/0/1?

[balaji.bandi · Accepted solution]

So as see your message, you have tested different fibre patches, different SFP Modules, the Logs looks same.

If you remove the Fibre patch and you did not see the Logs, then TAC is the best option.

Is this impacting (meansLink going down and up ? or stable ?) if the Link is stable, worth open a TAC Case.

[Daniel Blanco]

Thank you very much for your attention.

Regards,