What is the difference between BPDU filter and BPDU guard?

What is the difference between BPDU filter and BPDU guard?

BPDU filter will prevent inbound and outbound BPDU but will remove portfast state on a port if a BPDU is received. On the other hand, BPDU Guard keeps an eye open for any BPDU’s entering the interfaces that are enabled this feature. The port will disable as soon as the first BPDU is received, by shutting the port down.

What is BPDU filter enable?

The STP BPDU filter feature allows control of spanning tree participation on a per-port basis. It can be used to exclude specific ports from becoming part of spanning tree operations. A port with the BPDU filter enabled will ignore incoming BPDU packets and stay locked in the spanning tree forwarding state.

When should I use spanning tree BPDUfilter?

Use the BPDU guard feature in a service-provider network to prevent an access port from participating in the spanning tree. Caution Configure Port Fast only on STP ports that connect to end stations; otherwise, an accidental topology loop could cause a data packet loop and disrupt switch and network operation.

What is Uplinkfast and Backbonefast?

btw the basic difference is that uplinkfast only allows quick failover of connected links (ie. blocked ports) whereas backbonefast removes the can detect topology changes due to indirect link failures.

What is spanning tree port edge?

Interfaces configured as spanning tree edge ports immediately transition to the forwarding state, without passing through the blocking or learning states, on linkup. This command has four states: spanning-tree port type edge—This command explicitly enables edge behavior on the access port.

What is Spanning Tree BPDU filter?

The spanning-tree BPDUfilter works similar to BPDUGuard as it allows you to block malicious BPDUs. When you receive a BPDU on a portfast enabled interface then it will lose its portfast status, disables BPDU filtering and acts as a normal interface.

What protection does BPDU Guard provide?

The BPDU Guard feature prevents the port from receiving any BPDUs but does not prevent it from sending them. If any BPDUs are received, the port will be errdisabled. The BPDU Filter feature effectively disables STP on the selected ports by preventing them from sending or receiving any BPDUs.

What is Cisco BPDU guard?

The Bridge Protocol Data Unit (BPDU) Guard feature is one of the Spanning Tree Protocol (STP) enhancements. This feature enhances switch network reliability, manageability, and security. STP ensures a loop-free topology for any Ethernet LAN. STP prevents loops and broadcast radiation.

What does Spanning Tree BPDUfilter enable do?

The spanning-tree BPDUfilter works similar to BPDUGuard as it allows you to block malicious BPDUs. The difference is that BPDUguard will put the interface that it receives the BPDU on in err-disable mode while BPDUfilter just “filters” it.

Is BackboneFast Cisco proprietary?

UplinkFast, Backbone Fast and Portfast are Cisco’s proprietary extensions to the Classic Spanning Tree Protocol (STP 802.1 D) algorithm.