- 기본 구성 라인
Both the auto and desirable PAgP modes allow interfaces to negotiate with partner interfaces to determine if they can form an EtherChannel based on criteria such as interface speed and, for Layer 2 EtherChannels, trunking state and VLAN numbers.
An Etherchannel cannot be configured in both the PAgP and LACP modes.Both the active and passive LACP modes allow interfaces to negotiate with partner interfaces to determine if they can form an EtherChannel based on criteria such as interface speed and, for Layer 2 EtherChannels, trunking state and VLAN numbers.
An Etherchannel cannot be configured in both the PAgP and LACP modes.Switch# configure terminal
Switch(config)# interface range gigabitethernet0/4 -5
Switch(config-if-range)# switchport mode access
Switch(config-if-range)# switchport access vlan 10
Switch(config-if-range)# channel-group 5 mode desirable
Switch(config-if-range)# end
만약 당신이 non-silent를 명시하지 않는다면, Silent를 할당받게 된다. silent 설정은 파일 서버 혹은 패킷 분석기로의 연결을 위해서 있다. 이 설정은 동작하기 위해, 채널 그룹으로 포트를 붙이기 위해, 전송을 위한 그 포트를 사용하기 위해 PAgP를 허락한다.
Port channel , 로드벨런싱 설정하기
Cisco 에지 장비와  Port channel 설정하기
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 interface Port-channel11 description S   switchport access vlan 280   switchport mode access  no ip address interface Vlan280 description S   ip address 60.1.1.217 255.255.255.252 Ip route 200.1.0.0 255.255.255.0 60.1.1.218  description S+MAN+KTL_2003002195+100M  switchport access vlan 280  switchport mode access  duplex full  speed 100  channel-group 11 mode on interface FastEthernet0/5  description S+MAN+KTL_2003002195+100M  switchport access vlan 280  switchport mode access  no ip address  duplex full  speed 100 channel-group 11 mode on  | 
로커스 406F에서 Port channel 설정하기
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 vlan database  vlan 100  vlan 200 ! interface fa0/1  description +++ KTL +++  speed 100 full-duplex  switchport access vlan 200 ! interface fa0/7  description +++ uplink +++  no switchport  port-group interface fa0/8  description +++ uplink +++  no switchport  port-group ! interface po0  switchport access vlan 100      ! interface vlan100 또는 (interface po0  no switchport  ip address 61.1.1.114 255.255.255.252 ) ! interface vlan200  ip address 60.1.2255.255.255.248 ip route 0.0.0.0/0 60.1.1.217  | 
확인
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 Switch#  show  port-group ----------------------------------------------------------------- 3  down   Round-Robin   fa9/1 fa9/2  | 
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 Port 그룹을 로드벨런싱으로  Switch(config)# interface po3 Switch# show port-group ----------------------------------------------------------------- 3  down   Dest MAC   fa9/1 fa9/2  | 
출처 : http://blog.naver.com/heavenksm
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