Table of Contents
Advertisement
70.1 BPDU Guard Overview
A BPDU (Bridge Protocol Data Units) is a data frame that contains information about STP. STP-aware
switches exchange BPDUs periodically.
The BPDU guard feature allows you to prevent any new STP-aware switch from connecting to an existing
network and causing STP topology changes in the network. If there is any BPDU detected on the ports
on which BPDU guard is enabled, the Switch disables the ports automatically. You can then enable the
ports manually in the PORT > Port Setup screen, or use the SECURITY > Errdisable > Errdisable Recovery
screen (see
Section 72.5 on page
70.1.1 What You Can Do
• Use the BPDU Guard Status screen
• Use the BPDU Guard Setup screen
70.2 BPDU Guard Status
Use this screen to view whether BPDU guard is enabled on the Switch and the port status. Click SECURITY
> BPDU Guard > BPDU Guard Status to view the following screen.
Figure 353 SECURITY > BPDU Guard > BPDU Guard Status
Chapter 70 BPDU Guard
C
BPDU Guard
503) to have the ports become active after a certain time interval.
(Section 70.2 on page
(Section 70.3 on page
XMG1930 Series User's Guide
493
H A P T E R
493) to view the BPDU guard status.
494) to enable BPDU guard on the Switch.
70
Advertisement
Table of Contents
Troubleshooting
