Bpdu Guard - ZyXEL Communications GS3700 Series User Manual

37.1 BPDU Guard Overview
A BPDU ( Bridge Prot ocol Dat a Unit s) is a dat a fram e t hat cont ains inform at ion about STP . STP-
aware swit ches exchange BPDUs periodically.
The BPDU guard feat ure allows you t o prevent any new STP- aware swit ch from connect ing t o an
exist ing net work and causing STP t opology changes in t he net work. I f t here is any BPDU det ect ed
on t he port ( s) on which BPDU guard is enabled, t he Swit ch disables t he port ( s) aut om at ically. You
can t hen enable t he port ( s) m anually in t he Ba sic Se t t ing > Por t Se t up screen (
page 69) or use t he Er r disa ble Re cove r y screen ( see
port ( s) becom e act ive aft er a cert ain t im e int erval.
37.1.1 What You Can Do
• Use t he BPD U Gua r d St a t us screen (
• Use t he BPD U Gu a r d Con figu r a t ion screen (
on t he Swit ch.
37.2 BPDU Guard Status
Use t his screen t o view whet her BPDU guard is enabled on t he Swit ch and t he port st at us. Click
Adva nce d Applica t ion > BPD U Gua r d in t he navigat ion panel.
C
HAPTER
Sect ion 37.2 on page
Sect ion 37.3 on page
GS3700/XGS3700 Series User's Guide
378

BPDU Guard

Sect ion 31.6 on page 331) t o have t he
378) t o view t he BPDU guard st at us.
379) t o enable BPDU guard
3 7
Sect ion 6.6 on