cisco [stp]

wer21213

STP
{
STP 802.1d
--------------
sh mac address-table

sh int vlan 1
sh spanning-tree


STATE: Blocking, Listening, Learning, Forwarding, Disabled


Switch(config)#int f0/1

Switch(config-if)#switchport port-security mac-address sticky  //进入该端口的前两个地址为静态地址
Switch(config-if)#switchport port-security mac-address maximum 2  //只能用2个MAC
Switch(config-if)#switchport port-security violation shutdown //违规关闭


Switch(config)#spanning-tree vlan 1 priority 4096  //设置root bridge
Switch(config)#spanning-tree vlan 1 root primary  //直接设置为root bridge


//用range设定一个范围，同时配置多个端口为PortFast
Switch(config)#int range fastEthernet 0/1 - 12
Switch(config-if-range)#spanning-tree portfast




RSTP 802.1w
--------------
EtherChannel: PAgP(Port Aggregation Protocol), LACP(Link Aggregation Control Protocol, 802.3ad)

#port security
S1#conf t

S1(config)#int range f0/3-4
S1(config-if-range)#switchport port-security maximum 1
S1(config-if-range)#switchport port-security mac-address sticky
S1(config-if-range)#switchport port-security violation shutdown



#PortFast
S1(config)#int range f0/3-4

S1(config-if-range)#spanning-tree portfast



#BPDUGuard, BPDUFilter
S1(config-if-range)#spanning-tree bpduguard enbale

S1(config-if-range)#spanning-tree bpdufilter enable


#UplinkFast
S1(config)#spanning-tree uplinkfast

S1#sh spanning-tree uplinkfast


#BackboneFast
S1(config)#spanning-tree backbonefast

S1#sh spanning-tree backbonefast


#RSTP
Core(config)#spanning-tree mode rapid-pvst

Core(config)#do sh spanning-tree



#EtherChannel
PAgP:
S1(config)#int port-channel 1

S1(config-if)#int range f0/1-2
S1(config-if-range)#switchport mode trunk
S1(config-if-range)#switchport nonegotiate    组织交换机自动检测链路类型以及自动设置中继类型
S1(config-if-range)#channel-group 1 mode desirable
S1(config-if-range)#do sh int fa0/1 etherchannel

S2(config)#int port-channel 1
S2(config-if)#int range f0/7-8
S2(config-if-range)#switchport trunk encap dot1q
S2(config-if-range)#switchport mode trunk
S2(config-if-range)#switchport nonegotiate
S2(config-if-range)#channel-group 1 mode desirable
S1(config-if-range)#do sh int port-channel 1

}