AG(聚合端口)

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前几天网络课的实验,仅供菜鸟交流用,不足之处,请大家指出,谢谢!
实验名称:端口聚合提供冗余备份链路@H_404_12@
实验目的:理解链路聚合的配置及原理@H_404_12@
技术原理:端口聚合(@H_404_12@Aggregate-port@H_404_12@)又称链路聚合,是指两台交换机之间在物理上将多个端口连接起来,将多条链路聚合成一条逻辑链路。从而增大链路带宽,解决交换网络中因带宽引起的网络瓶颈问题。多条物理链路之间能够相互冗余备份,其中任意一条链路断开,不会影响其他链路的正常转发数据。@H_404_12@
端口聚合遵循@H_404_12@IEEE802.3ad@H_404_12@协议的标准@H_404_12@
实现功能增加交换机之间的传输带宽,并实现链路冗余备份。@H_404_12@
实验设备:交换机两台、@H_404_12@PC@H_404_12@两台、直连线@H_404_12@4@H_404_12@条@H_404_12@
实验拓扑:@H_404_12@

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按照拓扑图连接网络时注意@H_404_12@,l@H_404_12@两台交换机都配置完端口聚合后,再将两台交换机连接起来。如果先连线再配置会造成广播风暴,影响交换机的正常工作。@H_404_12@
实验步骤:@H_404_12@
1. @H_404_12@@H_404_12@@H_404_12@ 交换机@H_404_12@A@H_404_12@的基本配置@H_404_12@
进入全局模式@H_404_12@
新建@H_404_12@vlan @H_404_12@10@H_404_12@
将@H_404_12@3@H_404_12@号端口放入@H_404_12@vlan @H_404_12@10@H_404_12@
验证测试:@H_404_12@SwitchA#show @H_404_12@vlan @H_404_12@@H_404_12@
2. @H_404_12@@H_404_12@@H_404_12@ 在交换机@H_404_12@A@H_404_12@上配置聚合端口@H_404_12@
SwitchA@H_404_12@(@H_404_12@config@H_404_12@)@H_404_12@#interface aggregateport 1 @H_404_12@@H_404_12@!创建聚合接口@H_404_12@AG1@H_404_12@
SwitchA@H_404_12@(@H_404_12@config-if@H_404_12@)@H_404_12@#switchport mode trunk @H_404_12@@H_404_12@!配置@H_404_12@AG@H_404_12@模式为@H_404_12@trunk@H_404_12@
SwitchA@H_404_12@(@H_404_12@config-if@H_404_12@)@H_404_12@#exit@H_404_12@
SwitchA@H_404_12@(@H_404_12@config@H_404_12@)@H_404_12@# interface range f0/1-2 @H_404_12@@H_404_12@!进入端口@H_404_12@1@H_404_12@和@H_404_12@ 2@H_404_12@
SwitchA@H_404_12@(@H_404_12@config-if-range@H_404_12@)@H_404_12@#port-group 1 @H_404_12@@H_404_12@!配置端口@H_404_12@1@H_404_12@和@H_404_12@ 2@H_404_12@属于@H_404_12@AG1@H_404_12@
验证测试:验证端口@H_404_12@1@H_404_12@和@H_404_12@ 2@H_404_12@属于@H_404_12@AG1@H_404_12@
SwitchA#show aggregateport 1 summary @H_404_12@@H_404_12@@H_404_12@!查看端口聚合组@H_404_12@1@H_404_12@的信息@H_404_12@
注:@H_404_12@G1@H_404_12@,最大支持端口数为@H_404_12@8@H_404_12@个,当前@H_404_12@vlan@H_404_12@模式为@H_404_12@trunk@H_404_12@,组成员有@H_404_12@f0/1,f0/2@H_404_12@。@H_404_12@
3. @H_404_12@@H_404_12@@H_404_12@ 交换机@H_404_12@B@H_404_12@的基本配置@H_404_12@
@H_404_12@@H_404_12@进入全局模式@H_404_12@
新建@H_404_12@vlan @H_404_12@10@H_404_12@
将@H_404_12@3@H_404_12@号端口放入@H_404_12@vlan @H_404_12@10@H_404_12@
验证测试:@H_404_12@SwitchA#show @H_404_12@vlan @H_404_12@@H_404_12@
4. @H_404_12@@H_404_12@@H_404_12@ 在交换机@H_404_12@B@H_404_12@上配置聚合端口@H_404_12@
SwitchB@H_404_12@(@H_404_12@config@H_404_12@)@H_404_12@#interface aggregateport 1 @H_404_12@@H_404_12@!创建聚合接口@H_404_12@AG1@H_404_12@
SwitchB@H_404_12@(@H_404_12@config-if@H_404_12@)@H_404_12@#switchport mode trunk @H_404_12@@H_404_12@@H_404_12@!配置@H_404_12@AG@H_404_12@模式为@H_404_12@trunk@H_404_12@
SwitchB@H_404_12@(@H_404_12@config-if@H_404_12@)@H_404_12@#exit@H_404_12@
SwitchB@H_404_12@(@H_404_12@config@H_404_12@)@H_404_12@# interface range f0/1-2 @H_404_12@@H_404_12@!进入端口@H_404_12@1@H_404_12@和@H_404_12@ 2@H_404_12@
Switch@H_404_12@(@H_404_12@config-if-range@H_404_12@)@H_404_12@#port-group 1 @H_404_12@@H_404_12@!配置端口@H_404_12@1@H_404_12@和@H_404_12@ 2@H_404_12@属于@H_404_12@AG1@H_404_12@
验证测试:验证端口@H_404_12@1@H_404_12@和@H_404_12@ 2@H_404_12@属于@H_404_12@AG1@H_404_12@
SwitchB#show aggregateport 1 summary @H_404_12@@H_404_12@!查看端口聚合组@H_404_12@1@H_404_12@的信息@H_404_12@
5. @H_404_12@@H_404_12@@H_404_12@ 验证当交换机之间的一条链路断开时,@H_404_12@PC1@H_404_12@和@H_404_12@PC2@H_404_12@仍能互相通信。@H_404_12@
@H_404_12@
另:删除聚合端口命令@H_404_12@
SwitchB@H_404_12@(@H_404_12@config@H_404_12@)@H_404_12@#no interface aggregateport 1@H_404_12@
@H_404_12@
@H_404_12@
注意事项:@H_404_12@
1. @H_404_12@@H_404_12@@H_404_12@ 只有同类型端口才能聚合为一个@H_404_12@ AG@H_404_12@端口。@H_404_12@
2. @H_404_12@@H_404_12@@H_404_12@ 所有物理端口必须属于同一个@H_404_12@vlan@H_404_12@。@H_404_12@
3. @H_404_12@@H_404_12@@H_404_12@ 在锐捷交换机上最多支持@H_404_12@8@H_404_12@个物理端口聚合为一个@H_404_12@AG@H_404_12@。@H_404_12@
4. @H_404_12@@H_404_12@@H_404_12@ 在锐捷交换机上最多支持@H_404_12@6@H_404_12@组聚合端口。@H_404_12@
端口汇聚的限制:
1.不支持两个设备以上的应用
2.只是用于802.3协议簇的MAC机制
3.只能工作在全双工模式下
4.所有捆绑的端口速率必须一致
说明:端口聚合技术不是将以太网帧进行分解,而是选择参与端口聚合的其中一个物理链接将整个以太网帧发送出去,所以端口聚合的过程就是如何将需要发送的以太网帧分发到某一端口的过程。同样,在另一端就是如何将不同端口发送过来的以太网帧合并起来,是指等同于但以端口收到的数据。

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