Thoughts on Internet Connection Monitoring?

[Steve_Pearson]

I was wondering what everyones thoughts were on Internet Connection monitoring?

I'm configuring a handful of Spark 1535/55 boxes for branch offices, each has a single leased line. I'm wondering if I should leave the connection monitoring on or turn it off.

The reason I'm thinking about this is down to recent issues on a Spark 1600 that kept dropping the internet connection, due to what it considered to be excessive packet loss, (although no testing could verify this), and as it was a single internet connection it would obviously bring the connectivity down totally causing outage on a production site. TAC recommended to disable the connection monitoring completely on this box as it only has one connection, so I'm wondering about the 1500's too!

[AkosBakos]

Hi @Steve_Pearson 

Lets say, leased line is stable. 

Because of you have a couple of same SPARKs, what if you enable the monitoring only on one SPARK then will see what happening?

Akos

I seems, the answer will be in testing...

[AkosBakos]

And one more:

Do we know the exessive packet loss is still persists? 

Can we exclude HW (and cable) problems?

Ákos

[Steve_Pearson]

On the 1600, personally, I think the issue is related to the SDWAN blade (even with it switched off!) as when I ran a test that had the WAN port connected to a little switch, a test laptop connected to the same switch and the connection monitoring using the IP of the laptop to ping and it still reported packet loss. never had a problem on earlier firmware!

At the moment i'm just trying to see what people normally do with connection monitoring on the Spark 1500 devices

[the_rock]

I saw another post you had about these devices being centrally managed, but does not seem you can enable monitoring blade on the smart console object for these devices. That would have been another option.

Andy

[Amir_Ayalon · Accepted solution]

Hi Guys,

The Connection monitoring on the small boxes and on the 1600/1800/2000 is the same.

Please notice that enabling it when you have only one internet connection, is for statistics and graph only, so if you don't need these, you can turn it off.

Also important to mention, that sometimes you need to tweak the setting for it to properly work. increase the latency, increase Jitter. this is as a result of different line condition, different type on internet connectivity, and more (important especially with satellite connectivity, or LTE/5G, but recommended to all to review their setting)

Soon we will release a R81.10.15 Jumbo replacement with some probing fixes.

in the meanwhile, if you are working with Cluster, or have one internet connection - you can disable internet monitoring.