Etherchannel

• Modes
  • On
    • On: no negotiation
  • PaGP
    • Desirable: send PAgP
    • Auto: listen for PAgP
    • Desirable-Desirable
    • Desirable-Auto
  • LACP
    • Active: send LACP
    • Passive: listen for LACP
    • Active-Active
    • Active-Passive

• Tips
  • 全てのportを初めにshutする
  • 利用するportのconfigをdefaultに戻す
    • # default int range fa 0/1 - 10

• Configuration
  • L2 Etherchannel
  • # interface range fa 0/1 - 3
    • (if)# shut
    • (if)# channel-group 1 mode on
    • (if)# no shut

• • L3 Etherchannel
  • # interface range f0/19 - 20
    • (if)# shut
    • (if)# no switchport
    • (if)# channel-group 24 mode desirable
  • # interface Port-channel 24
    • (if)# ip address 10.0.0.1 255.255.255.0
  • # interface range f0/19 - 20
    • (if)# no shut

• Verification
  • L2 Etherchannel
  • # show spannning tree vlan 1
    • portchannelを使った一つのSTP instanceとして見える

• • L3 Etherchannel
  • # show ip route
  • # show etherchannel summary
    • RU: Routed
    • SU: Switch