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sg200 cannot join to catalyst 2495

I have 3 existing switches, two for Catalyst 2495, and one for SG200-26,

Now I add new one for SG200-26, then connect to Catalyst 2495 any port, or connect to SG200-26 any port, fail, 2495 switch will stop the port, even SG200 connect port light up, but the network is stop, cannot ping each other!

I have tried reset the new SG200-26 to DHCP or manually set IP address with the same subnet. not working, I have update all firmware.

My network no vlan setup, simple one.

I don't why my existing SG200-26 connect to 2950 is working, why add new one is not working?

I have configured 2950 with switch port, and sg200 also set as trunk port/ auto neg. when connect them. no luck!


Any idea?


Everyone's tags (1)

So you are connecting a 2950

So you are connecting a 2950 to a SG200?

What config is on the port on the 2950?