端口聚合Port-Channel
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端口汇聚是一种逻辑上的抽象过程,将一组具备相同属性的端口,抽象成一个逻辑端口。port channel是一组物理端口的集合体,在逻辑上被当作一个物理端口。对用户来讲,完全可以将这个port channel 当作一个端口使用,因此不仅能增加网络的带宽,还能提供链路的备份功能。 为使port channel 正常工作,port channel 的成员端口必须具备以下相同的属性: 1 端口均为全双工模式; 2端口速率相同; 3 端口的类型必须一样,比如同为以太口或同为光纤口;4 端口同为access 端口并且属于同一个vlan 或同为trunk 端口; 5 如果端口为trunk 端口,则其allowed vlan 和native vlan属性也应该相同。PAgP(Port Aggregation Protocol)端口聚集协议帮助在快速以太通道链接中联系自动生成 LACP(Link Aggregation Control Protocol,链路汇聚控制协议)是一种实现链路动态汇聚的协议 PAGP 属于cisco私有协议,LACP是公有协议。 PAgP的工作模式 ------- 对应的 LACP工作模式 on(开) ------- on auto(自动) ------- passive desirable(主动)------- active以上来自互联网 配置设备WEB IOU ,配置拓扑:
命令: SW1(config)#interface port-channel 1 建立一个以太网port-channel 1 SW1(config-if)#switchport trunk encapsulation dot1q port-channel 1 中的接口trunk封装的类型 (35一下的貌似可以不用) SW1(config-if)#switchport mode trunk port-channel 1 封装为trunk模式 SW1(config-if)#speed 100 设置port-channel 的端口速率 SW1(config-if)#duplex full 设置port-channel 的双工模式 SW1(config)#interface ethernet 0/0 SW1(config-if)#speed 100 SW1(config-if)#duplex full SW1(config-if)#switchport trunk encapsulation dot1q SW1(config-if)#switchport mode trunk SW1(config-if)#channel-group 1 mode on 设置将接口加入channel-group 1中,并定义模式为手动聚合(ON不属于任何协议) SW1(config)#interface ethernet 0/1 SW2 配置如上 查看命令 SW1#show etherchannel summary 查看端口聚合的汇总信息 Flags: D - down P - bundled in port-channel I - stand-alone s - suspended H - Hot-standby (LACP only) R - Layer3 S - Layer2 U - in use N - not in use,no aggregation f - failed to allocate aggregator M - not in use,no aggregation due to minimum links not met m - not in use,port not aggregated due to minimum links not met u - unsuitable for bundling d - default port w - waiting to be aggregated Number of channel-groups in use: 1 Number of aggregators: 1 Group Port-channel Protocol Ports ------+-------------+-----------+----------------------------------------------- 1 Po1(SU) - Et0/0(P) Et0/1(P) SW2#show etherchannel summary Flags: D - down P - bundled in port-channel I - stand-alone s - suspended H - Hot-standby (LACP only) R - Layer3 S - Layer2 U - in use N - not in use,port not aggregated due to minimum links not met u - unsuitable for bundling d - default port w - waiting to be aggregated Number of channel-groups in use: 1 Number of aggregators: 1 Group Port-channel Protocol Ports ------+-------------+-----------+----------------------------------------------- 1 Po1(SU) - Et0/0(s) Et0/1(P) SW1(config-if)#channel-group 1 mode desirable 模式变为PAGP协议 SW1(config-if)#channel-group 1 mode active 模式变为LACP协议 SW2 对端依据协商模式来配置, desirable-desirable desirable-auto active-active active-passive (编辑:安卓应用网) 【声明】本站内容均来自网络,其相关言论仅代表作者个人观点,不代表本站立场。若无意侵犯到您的权利,请及时与联系站长删除相关内容! |

