鏈路聚合配置

鏈路聚合配置

     鏈路聚合（Link Aggregation）又稱Trunk，是指將多個物理端口捆綁在一起，成為一個邏輯端口，以實現出/ 入流量在各成員端口中的負荷分擔，交換機根據用戶配置的端口負荷分擔策略決定報文從哪一個成員端口發送到對端的交換機。當交換機檢測到其中一個成員端口的鏈路發生故障時，就停止在此端口上發送報文，並根據負荷分擔策略在剩下鏈路中重新計算報文發送的端口，故障端口恢復后再次重新計算報文發送端口。鏈路聚合在增加鏈路帶寬、實現鏈路傳輸彈性和冗余等方面是一項很重要的技術。 
[DeviceA] link-aggregation group 1 mode manual     ；創建手工聚合組1 
[DeviceA] interface ethernet 1/0/1                             ；將以太網端口Ethernet1/0/1加入聚合組1 
[DeviceA-Ethernet1/0/1] port link-aggregation group 1

“Can not specify a loopback-detection enable port as aggregation group member ! ”回環檢測  
[DeviceA -Ethernet1/0/1]undo loopback-detection enable

[DeviceA-Ethernet1/0/1] port link-aggregation group 1  
[DeviceA] interface ethernet 1/0/2              ；將以太網端口Ethernet1/0/2加入聚合組1 
[DeviceA-Ethernet1/0/2] port link-aggregation group 1 
[DeviceA] link-aggregation group 1 service-type tunnel # 在手工聚合組的基礎上創建Tunnel業務環回組。 
[DeviceA] interface ethernet 1/0/1      # 將以太網端口Ethernet1/0/1加入業務環回組。 
[DeviceA-Ethernet1/0/1] undo stp 
[DeviceA-Ethernet1/0/1] port link-aggregation group 1