组网说明,总公司两块EWPXM1MAC0F插卡配置了主备AC,分公司ap跨公网注册到总部。总部和分支出口都配置了相关NAT保持三层互通。
总公司两块EWPXM1MAC0F插卡配置了主备AC,分公司ap跨公网注册到总部后(两端出口都做了NAT),但在AC上查看ap的地址,部分ap回显不是分公司的出口地址,而是ap获取的私网地址。
举例说明:
部分正常的ap地址显示:
<AC>dis wlan ap name 083a-38c4-xxxx address
AP name IP address MAC address
083a-38c4-xxxx 222.240.207. xx 083a-38c4-xxxx
不正常的是自身ap获取的私网地址:
<AC>dis wlan ap name 083a-38c5-xxxx address
AP name IP address MAC address
083a-38c5-xxxx 20.129.148.66 083a-38c5-xxxx
1、查看设备配置信息,暂未发现不正常
wlan ap-group default-group
priority 7 //主备AC配置
wlan tunnel-preempt enable
backup-ac ip 10.23.213.XX
2、查看ap获取的ac地址,发现option43属性下发正常
<083a-38c5-xxxx>dis dhcp client verbose
Vlan-interface1 DHCP client information:
Current state: BOUND
Allocated IP: 20.129.148.66 255.255.255.192
Allocated lease: 86400 seconds, T1: 36669 seconds, T2: 75600 seconds
Lease from Oct 27 03:58:50 2021 to Oct 28 03:58:50 2021
DHCP server: 20.129.148.126
Transaction ID: 0x65b32ba0
Default router: 20.129.148.126
Boot servers: 114.141.172.xx 140.207.160.xx
Client ID type: mac-address(type value=01)
Client ID value: 083a-38c5-9700
Client ID (with type) hex: 0108-3a38-c597-00
T1 will timeout in 0 days 4 hours 20 minutes 7 seconds
3、ap的log日志信息,发现ap回去找主备ac的私网地址上线
%Oct 20 06:50:28:059 2021 083a-38c5-9700 CWC/6/CWC_AP_UP: Master CAPWAP tunnel to AC 10.23.213.136 went up.
%Oct 20 06:50:28:666 2021 083a-38c5-9700 CWC/6/CWC_AP_UP: Backup CAPWAP tunnel to AC 10.23.213.135 went up.
%Oct 20 06:55:28:210 2021 083a-38c5-9700 CWC/4/CWC_AP_DOWN: Master CAPWAP tunnel to AC 10.23.213.136 went down. Reason: Backup tunnel changed to master tunnel.
%Oct 20 06:55:30:229 2021 083a-38c5-9700 CWC/6/CWC_AP_UP: Master CAPWAP tunnel to AC 10.23.213.135 went up.
%Oct 20 06:55:30:819 2021 083a-38c5-9700 CWC/6/CWC_AP_UP: Backup CAPWAP tunnel to AC 10.23.213.136 went up.
最终确认,配置了1+1备份导致的。
wlan ap-group default-group
priority 7
wlan tunnel-preempt enable
backup-ac ip 10.23.213.xx //配了这个命令,ac
vlan 1
所以现场做主备ac,这个现象是正常的。可以把这个地址直接指向公网,不会导致业务中断,可直接操作,现场已验证。
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