What is Bridge Protocol Data Unit (BPDU) Frame?

Bpdu Guard Cisco. انواع BPDU ها در سوییچ BPDU Guard یک ویژگی می باشد که باعث می شود To enable BPDU Guard or to disable BPDU Guard on a Cisco IOS-based Catalyst switch, use the following global configuration command: [no] spanning-tree portfast edge bpduguard default Bridge Protocol Data Unit (BPDU) is a spanning tree protocol (STP) message unit which describes the switch port attributes such as MAC address, priority, and cost to achieve which allow switches to participate in the Spanning Tree Protocol to collect information from each other.

In the above diagram, SW1 and SW2 have been configured with BPDU Guard on their. BPDU Guard is a feature that you can enable on a per-interface basis

What's BPDU Guard and how to configure it YouTube

BPDUfilter on the other hand just filters BPDUs in both directions, which effectively disables STP on the port.Bpdu filter will prevent inbound and outbound bpdu but will remove portfast state on a port if a bpdu is received.Enabling BPDU filtering on an interface is the same as disabling spanning tree on it and can result in spanning-tree loops. Much like the PortFast feature, BPDU Guard has two configuration options: globally (spanning-tree portfast bpduguard default) and per interface (spanning-tree bpduguard enable) To enable BPDU Guard or to disable BPDU Guard on a Cisco IOS-based Catalyst switch, use the following global configuration command: [no] spanning-tree portfast edge bpduguard default

How to Configure SpanningTree Portfast and BPDU Guard on Cisco Switch. If the port still receives a BPDU, it is put in the error-disabled state as a protective measure (config)# interface fastethernet 3/1 Switch#(config-if)# spanning-tree guard root On the Cisco Switches Catalyst 2900XL, 3500XL, 2950, and 3550, we configure.

BPDU GUARD ROOT GUARD HOW THESE WORKS IN STP YouTube. Console> (enable) Cisco IOS ® Software Command CatSwitch-IOS(config)# spanning-tree portfast bpduguard CatSwitch-IOS(config) When STP BPDU guard disables the port, the port remains in the disabled state unless the port is enabled. When the BPDU guard feature is enabled on the switch, spanning tree shuts down PortFast-configured interfaces that receive BPDUs, instead of putting them into the spanning tree blocking state..