WLC 4402 Vlan IP lost question

CSCO11269440 · ‎05-29-2014

WLC 4402 Vlan IP lost question
原本VLAN 50 IP有設定成功，但是在重新開機後IP就會消失，
原本版本為7.0.220.0，剛升級為7.0.250.0，
狀況仍然相同，請問各位有遇到相同的問題嗎?
或是由解決的方法嗎?
Cisco Controller-1 是剛重開機後show tac 的資訊
Cisco Controller-2 是設定完VLAN IP 的show tac 的資訊

lindawa · ‎05-29-2014

请确保在重启之前保存配置 “save config”；如果是发生断电之类的情况，有可能造成配置没有保存从而丢失。

CSCO11269440 · ‎05-29-2014

lindawa 发表于 2014-5-30 11:26
请确保在重启之前保存配置 “save config”；如果是发生断电之类的情况，有可能造成配置没有保存从而丢失。 ...

有正常存檔，但是重新開機後狀況一樣。
測試三、四次也是相同的狀況

lindawa · ‎05-29-2014

CSCO11269440 发表于 2014-5-30 11:30
有正常存檔，但是重新開機後狀況一樣。
測試三、四次也是相同的狀況

请在WLC上面"show interface summary" "show interface detailed ", 将命令的输出帖出来看一下。

lindawa · ‎05-30-2014

CSCO11269440 发表于 2014-5-30 11:30
有正常存檔，但是重新開機後狀況一樣。
測試三、四次也是相同的狀況

首先检查下WLC上面接口的配置，确保任意两个接口没有重叠网段；你当前使用的版本有个BUG # CSCty45920, 说的是WLC允许创建属于不同VLAN两个动态接口, 尽管网段有重复。
这种情况下，WLC重启后会将重叠VLAN移除，因此会出现你遇到的这类问题。所以要确保接口的配置是正确的。
点击链接查看BUG信息：
CSCty45920 WLC allows creation of Dynamic Interfaces with Overlapping Subnet

CSCO11269440 · ‎05-30-2014

(Cisco Controller) >show interface summary
Interface Name Port Vlan Id IP Address Type Ap Mgr Guest
-------------------------------- ---- -------- --------------- ------- ------ -----
ap-manager LAG 15 10.1.114.151 Static Yes No
management LAG 15 10.1.114.150 Static No No
service-port N/A N/A 192.168.1.1 Static No No
virtual N/A N/A 1.1.1.1 Static No No
vlan10 LAG 10 10.1.113.253 Dynamic No No
vlan12 LAG 12 10.1.121.254 Dynamic No No
vlan13 LAG 13 10.1.117.254 Dynamic No No
vlan14 LAG 14 10.1.123.254 Dynamic No No
vlan16 LAG 16 10.1.119.254 Dynamic No No
vlan30 LAG 30 172.20.0.254 Dynamic No No
vlan50 LAG 50 10.1.112.254 Dynamic No No
(Cisco Controller) >show interface detailed vlan10
Interface Name................................... vlan10
MAC Address...................................... 00:1f:9e:9b:68:e7
IP Address....................................... 10.1.113.253
IP Netmask....................................... 255.255.254.0
IP Gateway....................................... 10.1.113.251
External NAT IP State............................ Disabled
External NAT IP Address.......................... 0.0.0.0
VLAN............................................. 10
Quarantine-vlan.................................. 0
Active Physical Port............................. LAG (29)
Primary Physical Port............................ LAG (29)
Backup Physical Port............................. Unconfigured
Primary DHCP Server.............................. 10.1.115.22
Secondary DHCP Server............................ Unconfigured
DHCP Option 82................................... Disabled
ACL.............................................. Unconfigured
AP Manager....................................... No
Guest Interface.................................. No
L2 Multicast..................................... Enabled
(Cisco Controller) >show interface detailed vlan12
Interface Name................................... vlan12
MAC Address...................................... 00:1f:9e:9b:68:e7
IP Address....................................... 10.1.121.254
IP Netmask....................................... 255.255.254.0
IP Gateway....................................... 10.1.121.251
External NAT IP State............................ Disabled
External NAT IP Address.......................... 0.0.0.0
VLAN............................................. 12
Quarantine-vlan.................................. 0
Active Physical Port............................. LAG (29)
Primary Physical Port............................ LAG (29)
Backup Physical Port............................. Unconfigured
Primary DHCP Server.............................. 10.1.115.22
Secondary DHCP Server............................ Unconfigured
DHCP Option 82................................... Disabled
ACL.............................................. Unconfigured
AP Manager....................................... No
Guest Interface.................................. No
L2 Multicast..................................... Enabled
(Cisco Controller) >show interface detailed vlan13
Interface Name................................... vlan13
MAC Address...................................... 00:1f:9e:9b:68:e7
IP Address....................................... 10.1.117.254
IP Netmask....................................... 255.255.254.0
IP Gateway....................................... 10.1.117.251
External NAT IP State............................ Disabled
External NAT IP Address.......................... 0.0.0.0
VLAN............................................. 13
Quarantine-vlan.................................. 0
Active Physical Port............................. LAG (29)
Primary Physical Port............................ LAG (29)
Backup Physical Port............................. Unconfigured
Primary DHCP Server.............................. 10.1.115.22
Secondary DHCP Server............................ Unconfigured
DHCP Option 82................................... Disabled
ACL.............................................. Unconfigured
AP Manager....................................... No
Guest Interface.................................. No
L2 Multicast..................................... Enabled
(Cisco Controller) >show interface detailed vlan14
Interface Name................................... vlan14
MAC Address...................................... 00:1f:9e:9b:68:e7
IP Address....................................... 10.1.123.254
IP Netmask....................................... 255.255.254.0
IP Gateway....................................... 10.1.123.251
External NAT IP State............................ Disabled
External NAT IP Address.......................... 0.0.0.0
VLAN............................................. 14
Quarantine-vlan.................................. 0
Active Physical Port............................. LAG (29)
Primary Physical Port............................ LAG (29)
Backup Physical Port............................. Unconfigured
Primary DHCP Server.............................. 10.1.115.22
Secondary DHCP Server............................ Unconfigured
DHCP Option 82................................... Disabled
ACL.............................................. Unconfigured
AP Manager....................................... No
Guest Interface.................................. No
L2 Multicast..................................... Enabled
(Cisco Controller) >show interface detailed vlan16
Interface Name................................... vlan16
MAC Address...................................... 00:1f:9e:9b:68:e7
IP Address....................................... 10.1.119.254
IP Netmask....................................... 255.255.254.0
IP Gateway....................................... 10.1.119.251
External NAT IP State............................ Disabled
External NAT IP Address.......................... 0.0.0.0
VLAN............................................. 16
Quarantine-vlan.................................. 0
Active Physical Port............................. LAG (29)
Primary Physical Port............................ LAG (29)
Backup Physical Port............................. Unconfigured
Primary DHCP Server.............................. 10.1.115.22
Secondary DHCP Server............................ Unconfigured
DHCP Option 82................................... Disabled
ACL.............................................. Unconfigured
AP Manager....................................... No
Guest Interface.................................. No
L2 Multicast..................................... Enabled
(Cisco Controller) >show interface detailed vlan30
Interface Name................................... vlan30
MAC Address...................................... 00:1f:9e:9b:68:e7
IP Address....................................... 172.20.0.254
IP Netmask....................................... 255.255.252.0
IP Gateway....................................... 172.20.1.251
External NAT IP State............................ Disabled
External NAT IP Address.......................... 0.0.0.0
VLAN............................................. 30
Quarantine-vlan.................................. 0
Active Physical Port............................. LAG (29)
Primary Physical Port............................ LAG (29)
Backup Physical Port............................. Unconfigured
Primary DHCP Server.............................. 10.1.114.150
Secondary DHCP Server............................ Unconfigured
DHCP Option 82................................... Disabled
ACL.............................................. Unconfigured
AP Manager....................................... No
Guest Interface.................................. No
L2 Multicast..................................... Enabled
(Cisco Controller) >show interface detailed vlan50
Interface Name................................... vlan50
MAC Address...................................... 00:1f:9e:9b:68:e7
IP Address....................................... 10.1.112.254
IP Netmask....................................... 255.255.255.0
IP Gateway....................................... 10.1.112.251
External NAT IP State............................ Disabled
External NAT IP Address.......................... 0.0.0.0
VLAN............................................. 50
Quarantine-vlan.................................. 0
Active Physical Port............................. LAG (29)
Primary Physical Port............................ LAG (29)
Backup Physical Port............................. Unconfigured
Primary DHCP Server.............................. 10.1.115.21
Secondary DHCP Server............................ 10.1.115.22
DHCP Option 82................................... Disabled
ACL.............................................. Unconfigured
AP Manager....................................... No
Guest Interface.................................. No
L2 Multicast..................................... Enabled
(Cisco Controller) >show interface detailed ap-manager
Interface Name................................... ap-manager
MAC Address...................................... 00:1f:9e:9b:68:e7
IP Address....................................... 10.1.114.151
IP Netmask....................................... 255.255.254.0
IP Gateway....................................... 10.1.115.251
External NAT IP State............................ Disabled
External NAT IP Address.......................... 0.0.0.0
VLAN............................................. 15
Active Physical Port............................. LAG (29)
Primary Physical Port............................ LAG (29)
Backup Physical Port............................. Unconfigured
Primary DHCP Server.............................. 10.1.115.22
Secondary DHCP Server............................ Unconfigured
DHCP Option 82................................... Disabled
ACL.............................................. Unconfigured
AP Manager....................................... Yes
Guest Interface.................................. No
L2 Multicast..................................... Enabled
(Cisco Controller) >show interface detailed management
Interface Name................................... management
MAC Address...................................... 00:1f:9e:9b:68:e7
IP Address....................................... 10.1.114.150
IP Netmask....................................... 255.255.254.0
IP Gateway....................................... 10.1.115.251
External NAT IP State............................ Disabled
External NAT IP Address.......................... 0.0.0.0
VLAN............................................. 15
Quarantine-vlan.................................. 0
Active Physical Port............................. LAG (29)
Primary Physical Port............................ LAG (29)
Backup Physical Port............................. Unconfigured
Primary DHCP Server.............................. 10.1.115.22
Secondary DHCP Server............................ Unconfigured
DHCP Option 82................................... Disabled
ACL.............................................. Unconfigured
AP Manager....................................... No
Guest Interface.................................. No
L2 Multicast..................................... Enabled

lindawa · ‎05-30-2014

CSCO11269440 发表于 2014-5-30 16:32
(Cisco Controller) >show interface summary
Interface Name Port Vlan Id IP Add ...

你的配置里面这两个动态接口正是我之前所说的情况；
虽然vlan10和vlan50属于不同vlan，但是可用地址空间是有重叠的（10.1.112.1~10.1.112.254）；而这是需要避免的。
有两种解决方法：
-1 修改你的接口配置，避免重叠VLAN的存在；
-2 升级软件版本到最新的版本（修复bug CSCty45920），这样控制器不会允许你的这种配置存在。
Interface Name................................... vlan10
MAC Address...................................... 00:1f:9e:9b:68:e7
IP Address....................................... 10.1.113.253
IP Netmask....................................... 255.255.254.0
Interface Name................................... vlan50
MAC Address...................................... 00:1f:9e:9b:68:e7
IP Address....................................... 10.1.112.254
IP Netmask....................................... 255.255.255.0

764963038cisco · ‎06-02-2014

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Yanli Sun · ‎06-02-2014

lindawa 发表于 2014-5-30 17:29
你的配置里面这两个动态接口正是我之前所说的情况；
虽然vlan10和vlan50属于不同vlan，但是可用地址空间 ...

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陈建0 · ‎06-26-2014

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