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V1900 causing loop in the network

mikhen
Occasional Contributor

V1900 causing loop in the network

Hi everyone!

 

Anyone familiar with this problem? I have four V1900-8 without any configuration (default config) and a E5412-92 with STP configured. Everytime I connect the V1900 to the 5412, the VLAN for the V1900 stops working, the STP reports "Blocking", I remove the V1900 and the VLAN is in Forwarding mode again.

The fault is reproducable and we have the latest fw on all switches.

 

Second, does anyone know if the V1900 support's CDP?

 

Regards Mike