topic Re: MX 105 Stack in Cloud Networking Platform

MX 105 Stack

SSAS1 — Thu, 19 Oct 2023 17:16:08 GMT

Just within the last month our internet has slowed by 75%. It worked fine up until a month ago. Using a MX 105 that was suggest to us by Meraki to fit our needs. Using a 2 gig SFP only getting 30 to 50 Mbps download. 900 + uploads. It looks like our Trunk ports will only handle MTU of 1500. it needs to be 9000. Does anyone know if we need to MX 250?

Re: MX 105 Stack

Raphael_L — Thu, 19 Oct 2023 17:34:53 GMT

Have you opened a ticket to Support ?

What does the stats of the device say ? CPU , memory , client count , number of sessions and so on. They should be able to tell if you are having a hardware bottleneck ( which I really doubt )

What firmware are you running ?

Re: MX 105 Stack

SSAS1 — Thu, 19 Oct 2023 18:04:03 GMT

We have been working with support sense 09-25-2023. They don't know what is going on. Lots of testing. event sent us a new MX 105. Current version: MX 18.107.4. CPU not sure where to look, I have looked all over the dashboard. 1255 clients.

Re: MX 105 Stack

aleabrahao — Thu, 19 Oct 2023 18:12:15 GMT

Check the Recommended use case.

https://documentation.meraki.com/MX/MX_Overviews_and_Specifications/MX95%2F%2F105_Datasheet

Re: MX 105 Stack

SSAS1 — Thu, 19 Oct 2023 18:44:36 GMT

Thanks for the info. We were sold a unit designed by Meraki sales to fit our needs but it seems as through we were mistaken. So sad. Wish I would have stayed with Watchguard.

Re: MX 105 Stack

ww^ — Thu, 19 Oct 2023 18:58:58 GMT

It just went bad from one day to another? Nothing changed like fw version?

What is a 2gig sfp? Like a 1Gb up/down?

Re: MX 105 Stack

Ryan_Miles — Thu, 19 Oct 2023 19:38:16 GMT

A 2 gig SPF? It appears you have a 10G bps transceiver in WAN 1 and a 1 Gbps transceiver in WAN 2 (physical port 4). And a 10 Gbps transceiver on LAN port 9.

How are you measuring throughput? From what source to what destination? Using what tool or website?

I just ran three speed tests using the MX tools page and got more than 1 Gbps each time. Even outside of these tests watching ongoing usage I'm regularly seeing 300-600 Mbps.

I also see in the event log almost everyday you have primary WAN link transitions between WAN 1 & 2 which you cause me to investigate the health of those links/carriers.

Re: MX 105 Stack

kj4qwt — Thu, 19 Oct 2023 19:48:56 GMT

Thank you Ryan,

Our issue is not on the upload side but rather the download. Is there a way to test from the Meraki dashboard to the MX105?

Re: MX 105 Stack

SSAS1 — Thu, 19 Oct 2023 19:50:11 GMT

You will see my System Admin chiming in on this thread. We have been testing using our backup WAN2. Our carrier is solid. CrownCastle has been onsite and verified the circuit.

Re: MX 105 Stack

Ryan_Miles — Thu, 19 Oct 2023 19:55:28 GMT

The dashboard throughput test is a download test not upload.

Re: MX 105 Stack

kj4qwt — Thu, 19 Oct 2023 19:55:30 GMT

I must also mention that we've tested the speeds using a MacBook Pro as a router sharing it's internet connection from an SFP+ Fiber NIC card to a GigaBit Copper Ethernet connection to a test computer. The upload and download performance outshined the MX105.

Re: MX 105 Stack

Ryan_Miles — Thu, 19 Oct 2023 20:00:51 GMT

Has all the cabling been swapped, transceivers swapped, what is the carrier handoff device? While the provider has verified their link there's no denying you're having many uplink failover events. But that might be a secondary issue.

What still needs to be addressed here is how are you measuring throughput?

Prior to the slow down a month ago what firewall was in use? The MX105 appears to be a new deployment. And was the MX105 working ok for some period of time?

Re: MX 105 Stack

ChristophJ — Fri, 20 Oct 2023 13:44:20 GMT

Hi SSAS,

Is there maybe some traffic shaping in effect that is configured on your MX? A low download like that seems weird, especially because your upload is 900+ Mbps.
What does the uplink configuration under Security & SD-WAN in SD-WAN & traffic shaping say?

What kind of SFP module are you using? Can you tell us the module name? I haven't seen a 2 gig SFP from Meraki.

I run a MX105 and I can get to 1 Gbit/s up and download without any issues with IPS enabled. Probably more would be possible too, but my uplink is just 1 Gig.
Since when are you running into this issue? Was there a firmware update and it started afterwards? Were there config changes somewhere in the network?

Also if the MX is having a hardware bottleneck that should be visible under Organization -> Summary Report and then select the Appliance network. The utilization will be visible in the bottom left corner.

Otherwise support will be able to tell if there is a hardware bottleneck. They have access to more data about the appliance.

Re: MX 105 Stack

kj4qwt — Fri, 20 Oct 2023 13:45:20 GMT

Hello Ryan,

The reason you are seeing excessive drops on our WAN1 interface is due to repeated testing with Meraki support requiring us to disonnect the fiber.

Our throughput is measured using a custom speedtest site from our ISP.

The speedtest is RFC Compliant. I'm not sure of what the RFC number is right now, I'm working on getting that information shortly.

Meraki support had shipped us an identical RMA with suspicion that it could be the previous MX105. However, the new MX105 is no different from the previous one.

We think that it could be a software update that is responsible for the degredation in router performance because we didn't notice any significant changes until the beginning of September of this year.

Re: MX 105 Stack

kj4qwt — Fri, 20 Oct 2023 14:04:05 GMT

Hello ChristohpJ,

I've attatched some screenshots of your requested information on the MX105.

The SFP+ Fiber Module is 10G.

Re: MX 105 Stack

kj4qwt — Fri, 20 Oct 2023 14:09:36 GMT

Sorry. I forgot to mention that the two different fiber modules were used as a demonstration for Meraki support to rule out that optics overload is not to blame for the close proximity between our providers NID and the MX105.

Re: MX 105 Stack

CMR — Fri, 20 Oct 2023 14:20:22 GMT

It shouldn't matter too much, but @Ryan_Miles said you have 1Gb transceiver in WAN 2, yet you have set it to 3Gb of bandwidth, I would lower it.

Also the download chart clearly shows more that 30-50Mb/s - are you only having the issue with WAN2, is WAN1 working as expected?

Re: MX 105 Stack

SSAS1 — Fri, 20 Oct 2023 14:24:52 GMT

WAN 2 should be ruled out as we only use it as a failover backup circuit.

Re: MX 105 Stack

CMR — Fri, 20 Oct 2023 14:27:43 GMT

@SSAS1 so if WAN1 is working at up to at least 220Mb/s download - per the graph above, what is at 30-50Mb/s?

Re: MX 105 Stack

SSAS1 — Fri, 20 Oct 2023 14:32:46 GMT

Internet is very slow 30 to 50 mbps throughout network. All devices. User complaints.