三层EC
实验拓扑：
实验目的：
三层交换机EC通信
基本配置：
SW1#
interface FastEthernet0/1
channel-group 1 mode on
interface FastEthernet0/2
channel-group 1 mode on
!
interface Port-channel 1
no switchport
ip address 192.168.1.1 255.255.255.0
SW2#
interface FastEthernet0/1
channel-group 1 mode on
interface FastEthernet0/2
channel-group 1 mode on
!
interface Port-channel 1
no switchport
ip address 192.168.1.2 255.255.255.0
实验验证：
Switch#sh etherchannel summary
Flags: D - down P - 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
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(SU) PAgP Fa0/1(P) Fa0/2(P)
