Meraki interface MX85 to Core are getting 'route connection change, down and up

[nst1]

I have the following connection but today I noticed the following log.

I even lost service for approximately 1 minute or less.

peer_type gateway, peer: 10.52.20.2 connection_status: connected
peer_type gateway, peer: 10.52.20.2 connection_status: disconnected

These logs are only seen in the MX, in the MS I don't see anything

Check the configuration of both ports on both the MX and the MS and they are identical.

[alemabrahao]

Is STP enabled on MS? You know that MX does not support LACP so you need to enable STP.

[nst1]

Yes, is enable.

[alemabrahao]

I suggest you to open a support case.

[cmr]

Do you see events logged on both sides and how long was the outage, the events should hint at it.

[nst1]

They are only logs in the MX, in the MS I don't see anything at all, these logs are no more than 1 minute.

[MartinLL]

Do you have IDS enabled on the MX?

[nst1]

Yes, IDS is enable.

[MartinLL]

There is a bug with SNORT3 on the MX85 and MX95 plattform that causes the ids engine to crash. When snort crashes the MX does not forward traffic until snort is restarted. And that takes aprox 1 min.

What you can do is ask support do downgrade the engine manually for you, or you can disable IDS.

But if it has only occured once then i doubt that this is the issue. If it happens more frequently just keep this in mind.

[PhilipDAth]

To be honest - I'm not sure if you relly even have an issue here.  Was this just a one off?

[nst1]

Yes, it was only once, so far it has not happened again.