三台交換機堆疊
1.二台交換機的堆疊實驗拓撲
irf區域設置為10，IRFSW1為member 1，優先級設置為10；IRFSW2為member 2，優先級保持默認 1，最大的優先級為32.
實驗配置及命令
IRFSW1：
irf 區域設置，並設置member 1的優先級。（默認編號也是1，最大是32）
[IRFSW1]irf domain 10
[IRFSW1]irf member 1 priority 10
先關閉端口，然后創建irf-port 1/1（member號/邏輯口編號），然后將物理口加入，再開啟剛關閉的端口。
[IRFSW1]interface range FastEthernet 1/0/53 to FastEthernet1/0/54
[IRFSW1-if-range]shutdown
[IRFSW1]irf-port 1/1
[IRFSW1-irf-port1/1]port group interface FastEthernet 1/0/53
[IRFSW1-irf-port1/1]port group interface FastEthernet 1/0/54
[IRFSW1]interface range FastEthernet 1/0/53 to FastEthernet1/0/54
[IRFSW1-if-range]undo shutdown
配置結果
IRFSW2：
更改成員編號后需要保存配置后，重啟使其生效。次時端口號變為2/0/50,2/0/51…
[IRFSW2]irf domain 10
[IRFSW2]irf member 1 renumber 2
<IRFSW2>save
The current configuration will be written to the device. Are you sure? [Y/N]:y
Please input the file name(*.cfg)[flash:/startup.cfg]
(To leave the existing filename unchanged, press the enter key):
Validating file. Please wait...
Saved the current configuration to mainboard device successfully.
<IRFSW2>reboot
這步和IRFSW1差不多，但是有一點很重要，特別是對多層堆疊：
irf-port 后面跟的1/1,2/2不是隨便弄的，前者（數字）是交換機的成員編號，后者是成員編號對應的邏輯口號，每台只有1,2兩個，你可以是n/1，n/2，但是如果你是n/1的話，那你下一個就只能是n+1/2，如果是n/2就和n/1配對，不可以兩個都是1或者都是2。
[IRFSW2]interface range FastEthernet 2/0/53 to FastEthernet 2/0/54
[IRFSW2-if-range]shutdown
[IRFSW2]irf-port 2/2
[IRFSW2-irf-port2/2]port group interface FastEthernet 2/0/53
[IRFSW2-irf-port2/2]port group interface FastEthernet 2/0/54
[IRFSW2]interface range FastEthernet 2/0/53 to FastEthernet 2/0/54
[IRFSW2-if-range]undo shut
[IRFSW2-if-range]undo shutdown
配置結果
啟動配置：
[IRFSW2]irf-port-configuration active
<IRFSW2>reboot
<IRFSW1>reboot
成功以后每台設備的名稱會自動變成主設備的名稱。
二.配置了堆疊后的設備鏈路驗的配置
SW1]dis irf MemberID Role Priority CPU-Mac Description *1 Master 1 2e92-6b04-0104 --- +2 Standby 1 2e92-832c-0204 ---
-
IRF-SW的配置鏈路聚合
//在IRF-SW上配置，將SW1的g0/1與SW2的g0/1做聚合 [IRF-SW]interface Bridge-Aggregation 1 //創建聚合口[TRF-SW1]port link-type trunk //接口類型配置為Trunk [TRF-SW1]port trunk permit vlan 10 //Trunk接口允許VLAN10通過[IRF-SW-Bridge-Aggregation1]int g1/0/1 //進入物理接口(第一台核心交換機的物理接口)
[IRF-SW-GigabitEthernet1/0/1]port link-aggregation group 1 //將物理接口加入聚合口
[IRF-SW-GigabitEthernet1/0/1]int g2/0/1 //進入物理接口（第二台核心的物理接口因為是做了堆疊修改為了是2/0/1開頭的）
[IRF-SW-GigabitEthernet2/0/1]port link-aggregation group 1 //將物理接口加入聚合口
[IRF-SW-GigabitEthernet2/0/1]display link-aggregation summary //檢查兩個端口是否都被加入到聚合口，簡寫dis link-a su //同樣方法將SW1的g0/2與SW2的g0/2做聚合
//在IRF-SW上配置，將SW1的g0/1與SW2的g0/1做聚合
[IRF-SW]interface Bridge-Aggregation 2 //創建聚合口[TRF-SW1]port link-type trunk //接口類型配置為Trunk [TRF-SW1]port trunk permit vlan 10 //Trunk接口允許VLAN10通過[IRF-SW-Bridge-Aggregation1]int g1/0/2 //進入物理接口(第一台核心交換機的物理接口)
[IRF-SW-GigabitEthernet1/0/2]port link-aggregation group 1 //將物理接口加入聚合口
[IRF-SW-GigabitEthernet1/0/2]int g2/0/2 //進入物理接口（第二台核心的物理接口因為是做了堆疊修改為了是2/0/1開頭的）
[IRF-SW-GigabitEthernet2/0/2]port link-aggregation group 1 //將物理接口加入聚合口
[IRF-SW-GigabitEthernet2/0/2]display link-aggregation summary //檢查兩個端口是否都被加入到聚合口，簡寫dis link-a su
接入層的交換機配置
- SW3把連接與核心交換機的接口加入VLAN10（配置trunk模式）
在SW3上將g0/1與g0/2做聚合
[SW3]int Bridge-Aggregation 1
[SW3]int Bridge-Aggregation 1 //創建聚合口 [SW3-Bridge-Aggregation1]port link-type trunk //接口類型配置為Trunk [SW3-Bridge-Aggregation1]port trunk permit vlan 10 //Trunk接口允許VLAN10通過
[SW3-Bridge-Aggregation1]int g1/0/1
[SW3-GigabitEthernet1/0/1]port link-aggregation group 1
[SW3-Bridge-Aggregation1]int g1/0/2
[SW3-GigabitEthernet1/0/2]port link-aggregation group 1
[SW3-GigabitEthernet1/0/2]qu //同樣方法在SW4上將g0/1與g0/2做聚合
- SW3把連接PC的接口加入VLAN10
[SW3]vlan 10 [SW3-vlan10]port g1/0/3 [SW3-vlan10]qu //同樣方法將SW4接PC端的接口划分到VLAN10
- 將SW4與核心交換機聚合端口配置為Trunk類型
[SW3]int Bridge-Aggregation 2 //創建聚合口 [SW3-Bridge-Aggregation1]port link-type trunk //接口類型配置為Trunk [SW3-Bridge-Aggregation1]port trunk permit vlan 10 //Trunk接口允許VLAN10通過 [SW3]dis link-aggregation summary /檢查聚合口 //同樣方法將SW4聚合端口配置為Trunk類型 //在IRF-SW上將兩個聚合口均配置為Trunk類型，並配置放行VLAN10 [IRF-SW]vlan 10 //划分VLAN10 [IRF-SW]int Bridge-Aggregation 2 //進入1聚合接口 [IRF-SW-Bridge-Aggregation1]port link-type trunk //聚合接口1配置為Trunk類型 [IRF-SW-Bridge-Aggregation1]port trunk permit vlan 10 //放行VLAN10 [IRF-SW-Bridge-Aggregation1]qu [IRF-SW]dis link-aggregation summary //檢查聚合接口
- SW4把連接PC的接口加入VLAN10
[SW3]vlan 10 [SW3-vlan10]port g1/0/3 [SW3-vlan10]qu