POEGEM12T2SFP User Manual
Max. Age:
If the POEGEM12T2SFP is the root bridge, the whole network will apply this figure as their maximum age time. When a switch receives a BPDU message originating from the root bridge and if the message age exceeds the maximum age of the bridge, the bridge will treat the root bridge as malfunctioned and issue a Topology Change Notification (TCN) BPDU to all other bridges. All bridges on the network will
Default: 20 seconds
Forward delay:
You can set the root bridge forward delay time. This figure is set by the root bridge only. The forward delay time is defined as the time spent changing from the Listening state to the Learning state and also from the Learning state to the Forwarding state of a port in a bridge. The forward delay time contains two states, Listening state to Learning state and Learning state to Forwarding state. It assumes that the forward delay time is 15 seconds, then the total forward delay time will be 30 seconds. This has much to do with the STP convergence time which will be more than 30 seconds because of some other factors. The valid value is 4 ~ 30 seconds
Default: 15 seconds.
Force Version:
The switch supports both STP (802.1d) and RSTP (802.1w). This option can be selected here.
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