MX - Device utilization degradation after upgrading to MX 18.2

[RaphaelL]

Hi ,

We are currently upgrading from MX 18.107 to MX 18.211.3.  Upgrade date is sept 26th and devices are MX68CW.

After upgrading 500 networks I noticed a general trend. Device utilization is going up in 80% of our networks. 

Some are more obvious :

Anyone else encountered this ? I was expecting a better device utilization not worse 😐

[SeanW]

Not related to this issue, but I noticed my test units kept dropping the WAN connection every 24/36 hours. After a downgrade everything has cleared up.

[cmr]

Yes, I saw this and 19.1 seems better, so I have been running that where I can 'risk' a beta.

[RaphaelL]

oof... I hope I won't encounter major issues. I don't wanna halt my deployement because of that.

[henrry81]

I have seen similar problems and it is surprising that cmr found 19.1 to be better. If you’re okay with getting into beta testing, you might want to give that version a shot.

[RaphaelL]

Little update : This increase of device utilization seems to be caused by the IDS/IPS module. We are running in IDS Security mode. 

More to come.

[cmr]

I upgraded an MX75 running the IDS in security mode from 18.1xx to 19.1 in June and as you can see below the usage didn't really change:

Though looking at it again it might have increased very slightly... I do however remember the increase with 18.2xx being quite marked.

 

[cmr]

Why not try one site with 19.1, it's been very stable for me since June, which is more than can be said for the MR beta releases... 😬

[RaphaelL]

Can't do , we do not run beta firmware in production 😔

[NFL0NR]

just out of curiosity you might want to call in and check the number of flows going to the device we were having a similar issue and turned out we were flooding the 450 with DNS traffic.  We offloaded the traffic and our numbers are looking MUCH better