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C9500: Links wont come up with QSFP 100G LR4

Benjamin-A
Level 1
Level 1

Hi Community!

 

we have 2x C9500-48Y4C directly connected with QSFP 100G LR4.

One of the C9500 is running IOS-XE 16.9.1 (Hostname: B-02)  and the other 17.3.3 (Hostname B-01).

AOC Cables working perfeclty.

 

The links between the devices won't come up since the upgrade of one Device to 17.3.3

But I don't want to upgrade the 2nd until I am sure the first is running OK. 

 

 

B-01#show int hu1/0/49
HundredGigE1/0/49 is down, line protocol is down (notconnect)
  Hardware is Hundred Gigabit Ethernet, address is a0b4.39cd.8491 (bia a0b4.39cd.8491)
  Description: "Link to B-02"
  MTU 9100 bytes, BW 100000000 Kbit/sec, DLY 10 usec,
     reliability 255/255, txload 1/255, rxload 1/255
  Encapsulation ARPA, loopback not set
  Keepalive set (10 sec)
  Full-duplex, 100Gb/s, link type is force-up, media type is QSFP 100G LR4

 

 

 

B-02#show int hu1/0/49
HundredGigE1/0/49 is down, line protocol is down (notconnect)
  Hardware is Hundred Gigabit Ethernet, address is a0b4.39cd.8351 (bia a0b4.39cd.8351)
  Description: "Link to B-01"
  MTU 9100 bytes, BW 100000000 Kbit/sec, DLY 10 usec,
     reliability 255/255, txload 1/255, rxload 1/255
  Encapsulation ARPA, loopback not set
  Keepalive set (10 sec)
  Full-duplex, 100Gb/s, link type is force-up, media type is QSFP 100G LR4
  Fec is auto

 

 

First I saw that link type is forced-up on 17.3.3 --> configured "speed nonegotiate" on 16.9.1 

Then tried to play around with fec --> auto/cl91.

 

"show interface hu1/0/49 transceiver detail" looks also perfectly fine.

 

B-01#show int hu1/0/49 transceiver 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)
---------    -----------------  ----------  ---------  ---------  ---------
Hu1/0/49     42.9                   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)
---------    -----------------  ----------  ---------  ---------  ---------
Hu1/0/49     3.24                   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)
---------  ----  ---------------  ----------  ---------  ---------  ---------
Hu1/0/49   1     37.9                 55.0       50.0       30.0       25.0
Hu1/0/49   2     37.7                 55.0       50.0       30.0       25.0
Hu1/0/49   3     38.0                 55.0       50.0       30.0       25.0
Hu1/0/49   4     37.6                 55.0       50.0       30.0       25.0

                 Optical          High Alarm  High Warn  Low Warn   Low Alarm
                 Transmit Power   Threshold   Threshold  Threshold  Threshold
Port       Lane  (dBm)            (dBm)       (dBm)      (dBm)      (dBm)
---------  ----  ---------------  ----------  ---------  ---------  ---------
Hu1/0/49   1      2.4                  7.5        4.5       -4.3       -8.3
Hu1/0/49   2      2.4                  7.5        4.5       -4.3       -8.3
Hu1/0/49   3      2.1                  7.5        4.5       -4.3       -8.3
Hu1/0/49   4      2.4                  7.5        4.5       -4.3       -8.3

                 Optical          High Alarm  High Warn  Low Warn   Low Alarm
                 Receive Power    Threshold   Threshold  Threshold  Threshold
Port       Lane  (dBm)            (dBm)       (dBm)      (dBm)      (dBm)
---------  ----  ---------------  ----------  ---------  ---------  ---------
Hu1/0/49   1     -2.1                  7.5        4.5      -10.6      -14.6
Hu1/0/49   2     -2.5                  7.5        4.5      -10.6      -14.6
Hu1/0/49   3     -2.6                  7.5        4.5      -10.6      -14.6
Hu1/0/49   4     -1.7                  7.5        4.5      -10.6      -14.6
B-02#show int hu1/0/49 transceiver 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)
---------    -----------------  ----------  ---------  ---------  ---------
Hu1/0/49     42.5                   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)
---------    -----------------  ----------  ---------  ---------  ---------
Hu1/0/49     3.24                   3.63       3.46       3.13       2.97

                                High Alarm  High Warn  Low Warn   Low Alarm
             Current            Threshold   Threshold  Threshold  Threshold
Port         (milliamperes)     (mA)        (mA)       (mA)       (mA)
---------    -----------------  ----------  ---------  ---------  ---------
Hu1/0/49     40.7                   55.0       50.0       30.0       25.0

             Optical            High Alarm  High Warn  Low Warn   Low Alarm
             Transmit Power     Threshold   Threshold  Threshold  Threshold
Port         (dBm)              (dBm)       (dBm)      (dBm)      (dBm)
---------    -----------------  ----------  ---------  ---------  ---------
Hu1/0/49      2.2                    7.5        4.5       -4.3       -8.3

             Optical            High Alarm  High Warn  Low Warn   Low Alarm
             Receive Power      Threshold   Threshold  Threshold  Threshold
Port         (dBm)              (dBm)       (dBm)      (dBm)      (dBm)
---------    -----------------  ----------  ---------  ---------  ---------
Hu1/0/49     -1.4                    7.5        4.5      -10.6      -14.6

 

 

Had the same problem once with the QSFP 100G L4 while upgrading to 16.12.4. Cisco then writes "speed nonegotiate" in every port-channel. But this time can't solve it...

 

Someone may had the same problem and/or knows a solution?


.:|:..:|:.Please rate helpful posts.:|:..:|:.
1 Accepted Solution

Accepted Solutions

Leo Laohoo
Hall of Fame
Hall of Fame

First, upgrade 16.9.1 to something like 16.9.7.

And have a look at CSCvt16172.  17.3.X Release Notes states this bug is fixed in 17.3.4.

View solution in original post

3 Replies 3

Leo Laohoo
Hall of Fame
Hall of Fame

First, upgrade 16.9.1 to something like 16.9.7.

And have a look at CSCvt16172.  17.3.X Release Notes states this bug is fixed in 17.3.4.

Hi Leo,

thanks for you awnser. 

Can't say if it is this bug or not. Update to 17.3.4 on one side + no upgrade on the other side didn't change anything. 

As I had to update the other side now anyway I didn't tried 16.9.7. Both are now running on 17.3.4 and it works fine again...


.:|:..:|:.Please rate helpful posts.:|:..:|:.

I am suspecting the issue is the switch loaded with 16.9.1, hence, my recommendation of upgrading to 16.9.7.

Anyway, good to hear it is finally working.

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