狐狼象鹰 发表于 2012-11-16 10:48:24

642-813lacp实验中channel-groude 1状态为什么为SD

准备要考642-813，但是在做lacp的时候总是配到swith A的channel-group总是处在SD状态。以下是配置：


SWitchB：
spanning-tree mode rapid-pvst
spanning-tree vlan 11-13,21-23 priority 28672

interface FastEthernet0/3
channel-group 1 mode passive
switchport trunk native vlan 99
switchport trunk allowed vlan 1,21-23
switchport trunk encapsulation dot1q
switchport mode trunk
!
interface FastEthernet0/4
channel-group 1 mode passive
switchport trunk native vlan 99
switchport trunk allowed vlan 1,21-23
switchport trunk encapsulation dot1q
switchport mode trunk
!

interface FastEthernet0/9
switchport access vlan 21
switchport mode access
spanning-tree portfast
!
interface FastEthernet0/10
switchport access vlan 21
switchport mode access
spanning-tree portfast
!

interface FastEthernet0/13
switchport access vlan 22
switchport mode access
spanning-tree portfast
!
interface FastEthernet0/14
switchport access vlan 22
switchport mode access
spanning-tree portfast
!
interface FastEthernet0/15
switchport access vlan 23
switchport mode access
spanning-tree portfast
!
interface FastEthernet0/16
switchport access vlan 23
switchport mode access
spanning-tree portfast
!

interface Port-channel 1
switchport trunk native vlan 99
switchport trunk allowed vlan 1,21-23
switchport trunk encapsulation dot1q
switchport mode trunk
!
interface Vlan1
ip address 192.168.1.11 255.255.255.0
!



SWitch A：

spanning-tree mode rapid-pvst
spanning-tree vlan 11-13,21-23 priority 24576
!
!
!
!
interface FastEthernet0/1
!
interface FastEthernet0/2
!
interface FastEthernet0/3
channel-group 1 mode active
switchport trunk native vlan 99
switchport trunk allowed vlan 1,21-23
switchport trunk encapsulation dot1q
switchport mode trunk
!
interface FastEthernet0/4
channel-group 1 mode active
switchport trunk native vlan 99
switchport trunk allowed vlan 1,21-23
switchport trunk encapsulation dot1q
switchport mode trunk
!

!
!

!
interface Port-channel 1
switchport trunk native vlan 99
switchport trunk allowed vlan 1,21-23
switchport trunk encapsulation dot1q
switchport mode trunk
!
interface Vlan1
no ip address
shutdown
!


测试结果如下：







swith B ping 192.168.1.1，数据总是断断续续的。192.168.1.1是路由器f0/0ip。

victor_huang 发表于 2012-11-16 13:28:57

方法1：在配置 Port-channel的时候，两端的接口先shutdown，都配置完后，在no shutdown.
方法2：两端的模式都配置成on 试试。

ccwmy@sohu.com 发表于 2012-11-16 18:02:27

victor_huang 发表于 2012-11-16 13:28 static/image/common/back.gif
方法1：在配置 Port-channel的时候，两端的接口先shutdown，都配置完后，在no shutdown.
方法2：两端的模式 ...

on-on 的是没有协议的，passive-active，是LACP，desirable-auto 是PAGP，两个协议不一样的，SD直接把那个端口在组里面dow 然后在no shut

WindowsAndLinux 发表于 2012-12-18 23:53:20

-woniu2--woniu2--woniu2--woniu2-
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