Users Guide

Dell PowerConnect 55xx Systems User Guide 441
STP LAG Settings
To assign STP parameters to LAGs:
1
Click Switching > Spanning Tree > LAG Settings in the tree view to
display the
STP LAG Settings: Summary page.
Figure 13-3. STP LAG Settings: Summary
The LAGs and their STP settings are displayed.
2 To modify STP settings on a LAG, click Edit .
3 Select a LAG from the Select a LAG drop-down menu.
4 Enter the fields.
–
STP — Enable/disable STP on the LAG.
–
Fast Link — Check to enable Fast Link mode for the LAG. If Fast
Link mode is enabled for a LAG, the
LAG State is automatically
placed in
Forwarding when the LAG is up. Fast Link mode optimizes
the time it takes for the STP protocol to converge. STP convergence
can take from 30-60 seconds in large networks.
–
BPDU Guard — Check to enable BPDU Guard on the LAG.
–
Root Guard — Check to prevent devices outside the network core
from being assigned the spanning tree root.