一:实验拓扑:
二:实验过程: SW1(config)#int range f1/1 - 2 SW1(config-if-range)#no sh SW1(config-if-range)#switchport trunk encapsulation dot1q SW1(config-if-range)#switchport mode trunk SW1(config-if-range)#channel-group 1 mode on SW2(config)#int range f1/1 - 2 SW2(config-if-range)#no sh SW2(config-if-range)#switchport mode trunk SW2(config-if-range)#switchport trunk encapsulation dot1q SW2(config-if-range)#speed 100 SW2(config-if-range)#duplex full SW2(config-if-range)#channel-group 1 mode on 验证SW1的EtherChannel summary配置 SW1#show etherchannel summary //查看Etherchannel的汇总 Flags: D - down P - in port-channel I - stand-alone s - suspended R - Layer3 S - Layer2 U - in use Group Port-channel Ports -----+------------+----------------------------------------------------------- 1 Po1(SU) Fa1/1(P) Fa1/2(P) SW1#show interfaces trunk //查看封装 Port Mode Encapsulation Status Native vlan Po1 on 802.1q trunking 1 Port Vlans allowed on trunk Po1 1-1005 Port Vlans allowed and active in management domain Po1 1,5,10 Port Vlans in spanning tree forwarding state and not pruned Po1 1,5,10 SW1#show spanning-tree //查看生成树信息 VLAN1 is executing the ieee compatible Spanning Tree protocol Bridge Identifier has priority 32768, address cc02.12ec.0000 Configured hello time 2, max age 20, forward delay 15 We are the root of the spanning tree Topology change flag not set, detected flag not set Number of topology changes 4 last change occurred 00:04:55 ago from Port-channel1 Times: hold 1, topology change 35, notification 2 hello 2, max age 20, forward delay 15 Timers: hello 0, topology change 0, notification 0, aging 300 Port 44 (FastEthernet1/3) of VLAN1 is forwarding Port path cost 19, Port priority 128, Port Identifier 128.44. Designated root has priority 32768, address cc02.12ec.0000 Designated bridge has priority 32768, address cc02.12ec.0000 Designated port id is 128.44, designated path cost 0 Timers: message age 0, forward delay 0, hold 0 Number of transitions to forwarding state: 1 BPDU: sent 538, received 0 Port 46 (FastEthernet1/5) of VLAN1 is forwarding Port path cost 19, Port priority 128, Port Identifier 128.46. Designated root has priority 32768, address cc02.12ec.0000 Designated bridge has priority 32768, address cc02.12ec.0000 Designated port id is 128.46, designated path cost 0 Timers: message age 0, forward delay 0, hold 0 Number of transitions to forwarding state: 1 BPDU: sent 538, received 0 Port 52 (FastEthernet1/11) of VLAN1 is forwarding Port path cost 19, Port priority 128, Port Identifier 128.52. Designated root has priority 32768, address cc02.12ec.0000 Designated bridge has priority 32768, address cc02.12ec.0000 Designated port id is 128.52, designated path cost 0 Timers: message age 0, forward delay 0, hold 0 Number of transitions to forwarding state: 1 BPDU: sent 539, received 0 Port 53 (FastEthernet1/12) of VLAN1 is forwarding Port path cost 19, Port priority 128, Port Identifier 128.53. Designated root has priority 32768, address cc02.12ec.0000 Designated bridge has priority 32768, address cc02.12ec.0000 Designated port id is 128.53, designated path cost 0 Timers: message age 0, forward delay 0, hold 0 Number of transitions to forwarding state: 1 BPDU: sent 539, received 0 Port 321 (Port-channel1) of VLAN1 is forwarding Port path cost 12, Port priority 128, Port Identifier 129.65. Designated root has priority 32768, address cc02.12ec.0000 Designated bridge has priority 32768, address cc02.12ec.0000 Designated port id is 129.65, designated path cost 0 Timers: message age 0, forward delay 0, hold 0 Number of transitions to forwarding state: 1 BPDU: sent 369, received 127 VLAN5 is executing the ieee compatible Spanning Tree protocol Bridge Identifier has priority 32768, address cc02.12ec.0001 Configured hello time 2, max age 20, forward delay 15 We are the root of the spanning tree Topology change flag not set, detected flag not set Number of topology changes 1 last change occurred 00:05:37 ago from Port-channel1 Times: hold 1, topology change 35, notification 2 hello 2, max age 20, forward delay 15 Timers: hello 1, topology change 0, notification 0, aging 300 Port 321 (Port-channel1) of VLAN5 is forwarding Port path cost 12, Port priority 128, Port Identifier 129.65. Designated root has priority 32768, address cc02.12ec.0001 Designated bridge has priority 32768, address cc02.12ec.0001 Designated port id is 129.65, designated path cost 0 Timers: message age 0, forward delay 0, hold 0 Number of transitions to forwarding state: 1 BPDU: sent 184, received 0 VLAN10 is executing the ieee compatible Spanning Tree protocol Bridge Identifier has priority 32768, address cc02.12ec.0002 Configured hello time 2, max age 20, forward delay 15 We are the root of the spanning tree Topology change flag not set, detected flag not set Number of topology changes 1 last change occurred 00:05:37 ago from Port-channel1 Times: hold 1, topology change 35, notification 2 hello 2, max age 20, forward delay 15 Timers: hello 1, topology change 0, notification 0, aging 300 Port 321 (Port-channel1) of VLAN10 is forwarding Port path cost 12, Port priority 128, Port Identifier 129.65. Designated root has priority 32768, address cc02.12ec.0002 Designated bridge has priority 32768, address cc02.12ec.0002 Designated port id is 129.65, designated path cost 0 Timers: message age 0, forward delay 0, hold 0 Number of transitions to forwarding state: 1 BPDU: sent 184, received 0 SW1(config)#port-channel load-balance dst-mac //在SW1上配置EtherChannel负载 Warning: Delete and re-create existing port channels to apply new load balance method to them
