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Hi there,im configuring a Stack of 4 C9300-48P and now i have the problem that my uplink starts flapping after around 15-20min.im really confused because of this behaviour and im trying to fix it since 3 weeks but it wont work.Im using Flexoptix GBIC...
Hi,sorry for letting you wait.I solved the problem meanwhile.It was the VLAN configuration.On the Backbone Switch it was set to:switchport trunk allowed vlan allOn the Access Switch it was set to:switchport trunk allowed vlan 1-4094i changed the vlan...
@Stefan Mihajlovi´ve already swapped out the fibre optic cable (OM4), we don´t have any Cisco branded SFPs. We only have Flexoptix. On the Flexoptix Website the SFP is listed "Compatible" We got a other stack with the same Hardware (Switches and SFPs...
