H3C【IRF堆叠技术】

							IRF

一.定义
智能弹性架构，H3C堆叠技术，通过把多台交换机虚拟成一台逻辑设备来提高可靠性和性能

二.优势
大幅简化配置管理，提高整体设备性能，设备扩展简便，大幅提高设备可靠性，消除逻辑环路，不需要运行任何防环机制

三.工作流程
1.建立物理连接
2.通过向所有逻辑堆叠口发送Hello报文来收集堆叠组的拓扑
3.选举Master设备，选举失败会自动重启，重启完成后成为Slave设备
4.进入到IRF的维护阶段

四.Master设备选举
1.优先级大的优先，默认为1
2.系统运行时间长的优先
3MAC地址小的优先

五.IRF堆叠协议热备份
堆叠组内的所有交换机会自动同步配置文件，但是成员交换机允许过程产生缓存表项并不包含在配置文件中，热备份机制会自动把运行过程中的缓存表项进行同步，比如邻居表，协议路由，ARP表等

六.IRF形成的必要条件
1.堆叠口中的物理接口必须是万兆以上接口
2.一台设备上最多有2个堆叠口
3.一台设备的1号堆叠口必须连接到另一台设备的2号堆叠口
4.一台设备上的2号堆叠口对应的物理口的ID必须大于1号堆叠口对应的物理口的ID
5.所有堆叠的物理设备的操作系统必须一致

七.配置步骤
1.更改设备编号
2.保存配置，手动重启更改了设备的ID的交换机
3.收到shutdown要加入到堆叠口中的物理口
4.创建虚拟堆叠口，并加入相应的物理口
5.手动开启物理口
6.保存配置
7.激活IRF配置

								实验

SW2配置
[H3C]irf member 1 renumber 2
reboot
[H3C]int f2/0/53
[H3C-FortyGigE2/0/53]shutdown
[H3C-FortyGigE2/0/53]int f2/0/54
[H3C-FortyGigE2/0/54]shutdown
[H3C]irf-port 2/2
[H3C-irf-port2/2]port group interface f2/0/53
[H3C-irf-port2/2]port group interface f2/0/54
[H3C]int f2/0/53
[H3C-FortyGigE2/0/53]undo shutdown
[H3C-FortyGigE2/0/53]int f2/0/54
[H3C-FortyGigE2/0/54]undo shutdown
[H3C]save
[H3C]irf-port-configuration active
SW1配置
[H3C]int f1/0/53
[H3C-FortyGigE1/0/53]shutdown
[H3C]int f1/0/54
[H3C-FortyGigE1/0/54]shutdown
[H3C]irf-port 1/1
[H3C-irf-port1/1]port group interface f1/0/53
[H3C-irf-port1/1]port group interface f1/0/54
[H3C]int f1/0/53
[H3C-FortyGigE1/0/53]undo shutdown
[H3C-FortyGigE1/0/53]int f1/0/54
[H3C-FortyGigE1/0/54]undo shutdown
[H3C]save
[H3C]irf-port-configuration active
[H3C]sysname IRF
[IRF]int g1/0/1
[IRF-GigabitEthernet1/0/1]port link-aggregation group 1
[IRF]int g2/0/1
[IRF-GigabitEthernet2/0/1]port link-aggregation group 1
[IRF]int Bridge-Aggregation 2
[IRF]int g1/0/2
[IRF-GigabitEthernet1/0/2]port link-aggregation group 2
[IRF]int g2/0/2
[IRF-GigabitEthernet2/0/2]port link-aggregation group 2
[IRF]int Bridge-Aggregation 1
[IRF-Bridge-Aggregation1]port link-type trunk
[IRF-Bridge-Aggregation1]port trunk permit vlan all
[IRF]int Bridge-Aggregation 2
[IRF-Bridge-Aggregation2]port link-type trunk
[IRF-Bridge-Aggregation2]port trunk permit vlan all

SW3配置
[H3C]sys SW3
[SW3]int Bridge-Aggregation 1
[SW3]int g1/0/1
[SW3-GigabitEthernet1/0/1]port link-aggregation group 1
[SW3-GigabitEthernet1/0/1]int g1/0/2
[SW3-GigabitEthernet1/0/2]port link-aggregation group 1
[SW3]int Bridge-Aggregation 1
[SW3-Bridge-Aggregation1]port link-type trunk
[SW3-Bridge-Aggregation1]port trunk permit vlan all

SW4配置
[H3C]sysname SW4
[SW4]int Bridge-Aggregation 2
[SW4-Bridge-Aggregation2]int g1/0/1
[SW4-GigabitEthernet1/0/1]port link-aggregation group 2
[SW4-GigabitEthernet1/0/1]int g1/0/2
[SW4-GigabitEthernet1/0/2]port link-aggregation group 2
[SW4]int Bridge-Aggregation 2
[SW4-Bridge-Aggregation2]port link-type trunk
[SW4-Bridge-Aggregation2]port trunk permit vlan all