Ethernet port carrier change device: port0, carrier: false

IanHocking27
Here to help

Ethernet port carrier change device: port0, carrier: false

Hello.

I have an MX64 connected to an MS220-8P.

LAN port 4 on MX64 is connected to LAN port 8 on the MS.

about 20m apart.

 

Every day or so i get the message in the Subject field in the event log for the MX. Nothing in the event log for the MS.

The switch goes off-line. 

I unplug the patch lead on the MX and reboot the MS, and can get the switch back online again.

 

Spanning tree is turned off. simple network.

I set both ports to "100 Megabit full duplex (forced)" thinking it might be the auto-negotiation causing this.

Still happens.

 

Anyone got any ideas?

thank you!

2 Replies 2
ww
Kind of a big deal
Kind of a big deal

Port0 is the WAN/ internet1 interface 

alemabrahao
Kind of a big deal

It looks like a physical issue. Try exchanging the cable.

I am not a Cisco Meraki employee. My suggestions are based on documentation of Meraki best practices and day-to-day experience.

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