07-10-2018 08:59 AM - edited 03-08-2019 03:37 PM
Hi
I have a 10G nexus 3524x:
switch# show version Cisco Nexus Operating System (NX-OS) Software TAC support: http://www.cisco.com/tac Documents: http://www.cisco.com/en/US/products/ps9372/tsd_products_support_series_home.html Copyright (c) 2002-2016, Cisco Systems, Inc. All rights reserved. The copyrights to certain works contained herein are owned by other third parties and are used and distributed under license. Some parts of this software are covered under the GNU Public License. A copy of the license is available at http://www.gnu.org/licenses/gpl.html. Software BIOS: version 2.0.10 loader: version N/A kickstart: version 6.0(2)A7(2) system: version 6.0(2)A7(2) Power Sequencer Firmware: Module 1: version v2.1 BIOS compile time: 03/06/2018 kickstart image file is: bootflash:///n3500-uk9-kickstart.6.0.2.A7.2.bin kickstart compile time: 2/18/2016 8:00:00 [02/18/2016 17:46:27] system image file is: bootflash:///n3500-uk9.6.0.2.A7.2.bin system compile time: 2/18/2016 8:00:00 [02/18/2016 18:10:06] Hardware cisco Nexus 3548 Chassis ("48x10GE Supervisor") Intel(R) Pentium(R) CPU @ 2.00GHz with 3794056 kB of memory. Processor Board ID FOC221012ZM Device name: switch bootflash: 3932160 kB Kernel uptime is 5 day(s), 0 hour(s), 8 minute(s), 14 second(s) Last reset Reason: Unknown System version: 6.0(2)A7(2) Service: plugin Core Plugin, Ethernet Plugin switch#
When I try to connect to one of my devices the interface remains down reporting 'Link not connected':
switch# sh int Eth1/5 br -------------------------------------------------------------------------------- Ethernet VLAN Type Mode Status Reason Speed Port Interface Ch # -------------------------------------------------------------------------------- Eth1/5 100 eth access down Link not connected 10G(D) -- switch#
Transceiver information:
switch# sh int Eth1/5 transceiver detail Ethernet1/5 transceiver is present type is SFP-H10GB-CU3M name is Molex Inc. part number is 74752-1301 revision is serial number is 614440271 nominal bitrate is 12000 MBit/sec Link length supported for copper is 3 m cisco id is 3 cisco extended id number is 4 DOM is not supported switch#
If I simply loop the connection back to another port on the switch the link status goes to 'up', so it recognises itself.
Does any one know what it is that causes the switch to determine the link is connected and activate the interface on a 10G link ?
Is there some specific configuration I need to do before the link can be activated ?
Anyone have any ideas on how I can troubleshoot this ?
Solved! Go to Solution.
07-24-2018 12:28 AM
Well I did a little more digging and, to answer my own question, the device I am using to connect to the switch was using cl72 handshake protocol and it seems the switch is not using this (at least be default). When I disable cl72 on my device the link comes up successfully. Using xfi also works fine.
I have not yet been able to work out whether these protocols are configurable on the switch, or even how to tell which ones are enabled/disabled on the interface.
07-10-2018 09:17 AM
Hi,
What device is port e1/5 connected to?
Does it support 10G?
HTH
07-10-2018 09:38 AM
07-24-2018 12:28 AM
Well I did a little more digging and, to answer my own question, the device I am using to connect to the switch was using cl72 handshake protocol and it seems the switch is not using this (at least be default). When I disable cl72 on my device the link comes up successfully. Using xfi also works fine.
I have not yet been able to work out whether these protocols are configurable on the switch, or even how to tell which ones are enabled/disabled on the interface.
06-21-2019 07:36 AM
Hi,
can you share with us how did you disable cl72 protocol ?
09-13-2022 07:31 AM
lol don't you love it when people find solutions but don't even bother to share the said solution??
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