Spanning-tree Feature

目录

Portfast

​BPDUGuard

BPDUFilter

​UplinkFast

​BackboneFast背景

BackboneFast

RootGuard

LoopGuard背景

LoopGuard

​UDLD

UDLD的配置

​LoopGuard和UDLD的对比

CCNP交换-05 Spanning-tree Feature_哔哩哔哩_bilibili

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Portfast

BPDUGuard

*May 20 04:53:33.919: %SPANTREE-2-BLOCK_BPDUGUARD: Received BPDU on port Et0/0 with BPDU Guard enabled. Disabling port.
*May 20 04:53:33.919: %PM-4-ERR_DISABLE: bpduguard error detected on Et0/0, putting Et0/0 in err-disable state
*May 20 04:53:33.919: STP: VLAN0001 we are the spanning tree root
*May 20 04:53:33.919: STP[1]: Generating TC trap for port Ethernet0/0
*May 20 04:53:34.922: %LINEPROTO-5-UPDOWN: Line protocol on Interface Ethernet0/0, changed state to down
*May 20 04:53:35.926: %LINK-3-UPDOWN: Interface Ethernet0/0, changed state to down

BPDUFilter

UplinkFast

BackboneFast背景

BackboneFast

RootGuard

LoopGuard背景

LoopGuard

UDLD

UDLD的配置

LoopGuard和UDLD的对比