Layer3 Etherchannel

서버실에서 외부로 나가는 Path가 Down되었을 경우나 트래픽이 많을 때를 대비해 대역폭을 확보.

셋팅

interface FastEthernet0/3

 no switchport

 no ip address

 channel-group 1 mode active

!

interface FastEthernet0/4

 no switchport

 no ip address

 channel-group 1 mode active

!

!

interface Port-channel1

 no switchport

 ip address 192.168.33.1 255.255.255.0

!

HQ_SE_2F_L3_1#show 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(RU)         LACP      Fa0/3(P)    Fa0/4(P)

HQ_SE_2F_L3_1#show interfaces port-channel 1

Port-channel1 is up, line protocol is up (connected)

  Hardware is EtherChannel, address is 001a.e27e.88c5

  Internet address is 192.168.33.1/24

  MTU 1500 bytes, BW 200000 Kbit, DLY 100 usec,