Clients on Uplinks

[Daniel318]

Concerned!

I currently have a mixed environment of Cisco and Meraki switches on the network. All access layer switches connect to a core catalyst 4510. The access layer consisted of mostly catalyst 4506s'. I recently replaced three Cisco 4506's with Meraki MS350 stacks. I am aware I will have some issues....

https://documentation.meraki.com/MS/Monitoring_and_Reporting/Last_Seen_Switch_Port_of_Client_Keeps_Changing

However, even devices connected directly to Meraki switches are showing up on other uplinks of different stacks? For example, If I click on a switch port, then click on the client it is connected to, the client occasionally shows up on an uplink of different stack.

I am upgrading to all Meraki in the next year replacing the 4510 with two MS425s, and hoping this will clear up. I do feel I currently have an issue though. The switches are all using the core 4510 as RSTP ROOT Priority 1, so I do not think it is a Spanning tree problem.

Any help would be appreciated,

Thanks

[Philip D'Ath · Accepted solution]

If the client sends a broadcast packet then that will go over every uplink, and show this behaviour.

The problem will reduce as you get more and more Meraki swtches.

[Daniel318]

That is what I was hoping!

Thank you for the quick reply!

Dan