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link problem between Nexus and Catalyst switches

JyrkiHalonen
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I have problem to activate 25G link between Nexus 93180YC and Catalyst 9300X switches.

I have 2 of Nexus 93180YC-FX3 configured as a vPC pair. One of these from port eth1/25 I have MM fibre connected to Catalyst 9300X-48T switch (stack) to port Twe 2/1/3.

Nexus port configuration

interface Ethernet1/25

  description TEMP - L2-TRUNK to Catalyst

  switchport

  switchport mode trunk

  mtu 9000

  no shutdown

Catalyst port configuration

interface TwentyFiveGigE2/1/3

 description TEMP - L2-TRUNK to Nexus

 switchport mode trunk

 mtu 9000

 no cdp enable

end

 

I can see RX/TX power on both swithces for those ports:

Nexus

           SFP Detail Diagnostics Information (internal calibration)

  ----------------------------------------------------------------------------

                Current              Alarms                  Warnings

                Measurement     High        Low         High          Low

  ----------------------------------------------------------------------------

  Temperature   39.00 C        80.00 C    -10.00 C     70.00 C        0.00 C

  Voltage        3.22 V         3.63 V      2.97 V      3.46 V        3.13 V

  Current        6.27 mA       15.00 mA     0.00 mA    12.00 mA       2.00 mA

  Tx Power       0.92 dBm       3.49 dBm   -9.03 dBm    3.00 dBm     -6.00 dBm

  Rx Power       0.17 dBm       3.49 dBm  -13.01 dBm    3.00 dBm    -10.00 dBm

  Transmit Fault Count = 0

  ----------------------------------------------------------------------------

Catalyst

                                             Optical   Optical

             Temperature  Voltage  Current   Tx Power  Rx Power

Port         (Celsius)    (Volts)  (mA)      (dBm)     (dBm)

---------    -----------  -------  --------  --------  --------

Twe2/1/3     46.0       3.24       6.3       0.7       0.9

 

1 Accepted Solution

Accepted Solutions

JyrkiHalonen
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I found the solution for this: problem was with the interface fec settings.

Interface came up with these interface settings on inter-switch link:
- Nexus: fec fc-fec
- Catalyst: fec cl74

 

View solution in original post

1 Reply 1

JyrkiHalonen
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I found the solution for this: problem was with the interface fec settings.

Interface came up with these interface settings on inter-switch link:
- Nexus: fec fc-fec
- Catalyst: fec cl74