I am trying to deploy my SG and the interfaces keep flapping. I am seeing bpdu packets on my switch ports.


Article ID: 166565


Updated On:


ProxySG Software - SGOS


The Proxy SG has a minimum of 3 interfaces, even on the smallest 300 model.  Let's take the SG 300-25 for our example.  It has the following interfaces:

Int 0:0

Int 1:0

Int 1:1

Two of these interfaces are usually connected by either a hardware or software bridge.  In our above example interface 1:0 & 1:1 are on the same hardware bridge.  Do not connect both interfaces in the bridge (1:0 & 1:1) to the same switch.  Doing so will cause a switching loop.  Instead, connect int 0:0 and either int 1:0 or 1:1 to the switch.