Wednesday, December 4, 2019

Weird issue with meraki and SMB file transfer.

I have a site with a meraki mx100, a few ms-120 switches, and some mr-33 access points. In Azure I have a vMX100 with a meraki autoVPN tunnel to the site.

When downloading files from a SMB share on a server in Azure, wireless clients typically gets ~100 mbit/s but wired clients only get ~20 mbit/s. There is a single VLAN for all the wired clients, and the wireless SSID is bridged to the same VLAN. The clients are typical win10 HP laptops. They don't have any problems with other speed tests, for example to the Internet (the internet access is 200 mbit/s). It's only SMB traffic over the Azure tunnel that seems affected. The issue seems consistent across multiple clients, using different switches and accesspoints.

I know SMB over VPN is not ideal, but the strange issue here is that wireless clients is getting way better performance than wired clients in the same LAN. Anyone have any idea what could cause this?



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