05-IRF典型配置举例

H3C S12500-X IRF典型配置举例 Copyright © 2014 杭州华三通信技术有限公司 版权所有，保留一切权利。 非经本公司书面许可，任何单位和个人不得擅自摘抄、复制本文档内容的部分或全部， 并不得以任何形式传播。本文档中的信息可能变动，恕不另行通知。 i

目 录 1 简介 ······················································································································································ 1 2 配置前提 ··············································································································································· 1 3 使用限制 ··············································································································································· 1 4 两台成员设备的IRF配置举例 ················································································································ 2 4.1 组网需求 ··············································································································································· 2

4.2 配置思路 ··············································································································································· 3

4.3 使用版本 ··············································································································································· 4

4.4 配置步骤 ··············································································································································· 4

4.4.1 搭建IRF ······································································································································ 4

4.4.2 LACP MAD配置 ························································································································· 5

4.4.3 IRF下行业务配置 ······················································································································· 5

4.4.4 IRF上行业务配置 ······················································································································· 7

4.5 验证配置 ············································································································································· 11

4.6 配置文件 ············································································································································· 12

5 相关资料 ············································································································································· 18 1

1 简介 本文档介绍了配置两台成员设备的IRF、配置四台成员设备的IRF和IRF扩容升级的配置举例。 IRF（Intelligent Resilient Framework，智能弹性架构）是H3C自主研发的软件虚拟化技术，它的核心思想是将多台设备通过物理IRF端口连接在一起，进行必要的配置后，虚拟化成一台“虚拟设备”，通过该“虚拟设备”来实现多台设备的协同工作、统一管理和不间断维护。

为了便于描述，本文把这个虚拟化形成的设备称为IRF。

2 配置前提

本文档中的配置均是在实验室环境下进行的配置和验证，配置前设备的所有参数均采用出厂时的缺省配置。如果您已经对设备进行了配置，为了保证配置效果，请确认现有配置和以下举例中的配置不冲突。

请确保成员设备间的IRF物理连线正确连接，与配置组网图保持一致。 本文假设您已了解IRF特性。

3 使用限制

1. IRF形成条件 在使用S12500-X系列交换机组建IRF时，必须满足以下条件，否则将不能成功建立IRF： • 只有相同型号的机框之间才能建立IRF； • 组成IRF的各成员设备的系统工作模式必须相同； • IRF中所有成员设备的软件版本必须相同，如果有软件版本不同的设备要加入IRF，请确保IRF的启动文件同步加载功能处于使能状态；

• 在各成员设备上配置最大等价路由条数必须相同； 建议您在IRF中所有成员设备上均使用相同的单板配置方案，即选用的单板数量及型号、安装槽位号、以及单板的工作模式设置等都保持一致。

2. IRF连接限制 本设备上与IRF-Port1绑定的IRF物理端口只能和邻居成员设备IRF-Port2口上绑定的IRF物理端口

相连，本设备上与IRF-Port2口绑定的IRF物理端口只能和邻居成员设备IRF-Port1口上绑定的IRF物理端口相连，如表1所示。否则，不能形成IRF。

表1 IRF物理端口连接限制 邻居成员设备上的 IRF物理端口 本设备上的 IRF物理端口

IRF-Port1绑定的IRF物理端口 IRF-Port2绑定的IRF物理端口

IRF-Port1绑定的IRF物理端口 不能连接 可以连接 IRF-Port2绑定的IRF物理端口 可以连接 不能连接 2

3. IRF物理端口选择限制 在选择用于IRF连接的端口时，需要考虑本系列交换机上端口的分组方式： • 如果使用using tengige命令将一个40GE接口拆分成四个10GE接口，这四个10GE接口将分作一组。

• 在提供10GE端口的单板上，从编号1开始，按端口编号由小到大的顺序，每4个连续的端口分为一组。

• 如果直接使用40GE端口作为IRF物理端口，则不需要考虑端口的分组。 如果LSX1QGS16EA单板上的前8个40GE端口全部被拆分为10GE端口，则该单板将不能用于进行IRF连接。

在将IRF物理端口与IRF端口绑定时，需要满足以下条件： • 同一组中的所有端口用途必须相同，即当组内某一端口与IRF端口绑定后，该组中其它端口也必须与IRF端口绑定，不能再作为普通业务端口使用，反之亦然。

• 在将组内某个端口与IRF端口进行绑定或取消绑定之前，必须先对该端口所在组内的所有端口执行shutdown操作，在完成绑定或取消绑定操作后，再对同组内所有端口执行undo shutdown操作。

因此，建议您尽量选择位于同一组内的端口作为IRF物理端口。 • IRF最大成员设备数限制 本系列交换机最多支持使用两台设备建立IRF。 4. MAD使用限制 LACP MAD和BFD MAD的冲突处理的原则不同，请不要同时配置。

5. License使用限制 请确保IRF中各成员设备上安装的特性License一致，否则，可能会导致这些License对应的特性不能正常运行。

4 两台成员设备的IRF配置举例

4.1 组网需求 • 如图1所示，Device A为公司的核心设备，但由于公司网络规模日益增大，汇聚层SW设备扩展至N台，Device A单台设备的转发能力已无法达到公司网络的需求。为了拓展核心设备的转发能力，又尽量不改变现有网络。现公司希望增加Device B，与Device A组成IRF，来满足当前网络的需求。

• IRF的上行设备（Router A和Router B）为公司网络的出口路由器；IRF的下行交换机（SW 1、SW 2等）为各个服务器集群的汇聚层设备。