SFP+ ports getting disabled

ARISEIT
New here

SFP+ ports getting disabled

Does anyone have any advice for this weird issue?

 

I've got a MS420-24 connected to a few MS320-48LP in my network rack; one of the MS320's keeps dropping out when connected via SFP+ DAC, but is happy when connected via ethernet.

 

I've tried switching ports at each end, and have tried replacing the cable multiple times.

 

Here is my port config on the MS420

Screen Shot 2019-06-27 at 2.05.48 PM.png

 

Jun 27 12:42:00 Port STP change
Port 17 designated→disabled
Jun 27 12:42:00 Port status change
port: 17, old: 10Gfdx, new: down
Jun 27 12:41:59 Port STP change
Port 17 disabled→designated
Jun 27 12:41:59 Port status change
port: 17, old: down, new: 10Gfdx
Jun 27 12:40:52 UDLD alert
port: 17, state: unknown, port_blocked: false
Jun 27 12:40:11 Port STP change
Port 17 designated→disabled
Jun 27 12:40:11 Port status change
port: 17, old: 10Gfdx, new: down
Jun 27 12:40:11 UDLD alert
port: 17, state: unidirectional (outbound fault), port_blocked: true
Jun 27 12:40:05 Port STP change
Port 17 disabled→designated
Jun 27 12:40:05 Port status change
port: 17, old: down, new: 10Gfdx
Jun 27 12:39:56 Port STP change
Port 17 designated→disabled
Jun 27 12:39:56 Port status change
port: 17, old: 10Gfdx, new: down
Jun 27 12:39:54 Port STP change
Port 17 disabled→designated
Jun 27 12:39:54 Port status change
port: 17, old: down, new: 10Gfdx
Jun 27 12:39:52 Port STP change
Port 17 designated→disabled
Jun 27 12:39:52 Port status change
port: 17, old: 10Gfdx, new: down
Jun 27 12:39:51 Port STP change
Port 17 disabled→designated
Jun 27 12:39:51 Port status change
port: 17, old: down, new: 10Gfdx
Jun 27 12:39:48 Port STP change
Port 17 designated→disabled
Jun 27 12:39:48 Port status change
port: 17, old: 10Gfdx, new: down
Jun 27 12:39:46 Port STP change
Port 17 disabled→designated
Jun 27 12:39:46 Port status change
port: 17, old: down, new: 10Gfdx
Jun 27 12:39:44 Port STP change
Port 17 designated→disabled
Jun 27 12:39:44 Port status change
port: 17, old: 10Gfdx, new: down
Jun 27 12:39:42 Port STP change
Port 17 disabled→designated
Jun 27 12:39:42 Port status change
port: 17, old: down, new: 10Gfdx
Jun 27 12:39:11 UDLD alert
port: 17, state: unknown, port_blocked: false
Jun 27 12:38:21 Port STP change
Port 17 designated→disabled
Jun 27 12:38:21 Port status change
port: 17, old: 10Gfdx, new: down
Jun 27 12:38:21 UDLD alert
port: 17, state: unidirectional (outbound fault), port_blocked: true
8 REPLIES 8
jdsilva
Kind of a big deal

Only the MS320? And you're tried different DACs? Smells like a bug to me. Maybe call into support and get them to take a look. 

PhilipDAth
Kind of a big deal
Kind of a big deal

Is it a Meraki DAC cable?

Ooh, no it's not; I didn't think of that. All my other links are working fine on generic DAC cables
PhilipDAth
Kind of a big deal
Kind of a big deal

It is going to be tricky getting help from support.  Is the DAC cable 3m or less in length?

 

I would make sure you are on currently firmware like @jdsilva suggested as well.

Yep! 1m

 

And yep, I'm running all current firmware.

 

Yarrrr

PhilipDAth
Kind of a big deal
Kind of a big deal

I think I would try the firmware update, and then buy one Meraki DAC cable, plug it in, and then contact support.


@PhilipDAth wrote:

I think I would try the firmware update, and then buy one Meraki DAC cable, plug it in, and then contact support.


+1. It's only $100 list (MA-CBL-TA-1M).

Brons2
Building a reputation

https://www.1stop.com/meraki-10-gbe-twinax-cable-with-sfp-modules-1-meter.html?language=en&currency=...

 

$62.64

 

good idea...the brown portion in the connectivity bar usually means "high proportion of CRC errors"

Get notified when there are additional replies to this discussion.
Welcome to the Meraki Community!
To start contributing, simply sign in with your Cisco account. If you don't yet have a Cisco account, you can sign up.
Labels