20-Etherchannel 以太通道链路冗余技术（三层冗余） //IOU模拟

一、实验拓扑：

二、实验命令：
SW1(config)#int range e0/0 - 1
SW1(config-if-range)#no shutdown
SW1(config-if-range)#no switchport
SW1(config-if-range)#channel-group 1 mode on

SW2(config)#int range e0/0 - 1
SW2(config-if-range)#no shutdown
SW2(config-if-range)#no switchport
SW2(config-if-range)#channel-group 1 mode on

SW1(config)#int port-channel 1
SW1(config-if)#no shutdown
SW1(config-if)#ip add 172.16.24.1 255.255.255.0

SW2(config)#int port-channel 1
SW2(config-if)#no shutdown
SW2(config-if)#ip add 172.16.24.2 255.255.255.0

三、验证：
SW1#show int port-channel 1
Port-channel1 is up, line protocol is up (connected)
Hardware is Ethernet, address is 0000.0000.0000 (bia 0000.0000.0000)
Internet address is 172.16.24.1/24
MTU 1500 bytes, BW 20000 Kbit/sec, DLY 1000 usec

SW2#show int port-channel 1
Port-channel1 is up, line protocol is up (connected)
Hardware is Ethernet, address is 0000.0000.0000 (bia 0000.0000.0000)
Internet address is 172.16.24.2/24
MTU 1500 bytes, BW 20000 Kbit/sec, DLY 1000 usec

SW1#show etherchannel summary
Flags: D - down P - bundled in port-channel
I - stand-alone s - suspended
H - Hot-standby (LACP only)
R - Layer3 S - Layer2
U - in use f - failed to allocate aggregator

    M - not in use, minimum links not met
    u - unsuitable for bundling
    w - waiting to be aggregated
    d - default port

Number of channel-groups in use: 1
Number of aggregators: 1

Group Port-channel Protocol Ports
------+-------------+-----------+-----------------------------------------------
1 Po1(RU) - Et0/0(P) Et0/1(P)