某运营商局点AP主备注册异常问题处理案例
一、组网:
某市运营商网络中,新增加了数百台AP作为热点覆盖数个区域的WLAN,AC组网采用1+1快速热备。
二、问题描述:
现场工程师将新增的AP分别配置到主备AC后,发现主AC上新增的AP陆续注册上线,但备份AC上的新增AP始终处于Idle状态,有线链路侧已经确认AP和备份AC是可达的。
三、分析过程:
按照常规思路分析故障:
1) 查看主备AC的配置及当前主备状态。
主AC当前同步信息及设备信息:
[XXX-XX-X-AC1-3]display dhbk status
DHBK State: Enable
Backup Type: Symmetric path
Current state: Synchronization
VLAN ID: 4003
[XXX-XX-X-AC1-3]display hot-backup state
***************************************************************************
Vlan ID : 4003
Domain ID : 1
Link State : Connect
Peer Board MAC : 80f6-2ece-4d40
Peer Board State : Normal
Hello Interval : 2000
[XXX-XX-X-AC1-3]display device ma
Subslot 0
DEVICE_NAME : EWPXM2WCMD0
DEVICE_SERIAL_NUMBER : 210231A0HMB128000110
MAC_ADDRESS : 80F62ECE4D18
MANUFACTURING_DATE : 2012-8-22
VENDOR_NAME : H3C
备AC当前同步信息及设备信息:
[XXX-XX-X-AC2-3]display dhbk status
DHBK State: Enable
Backup Type: Symmetric path
Current state: Synchronization
VLAN ID: 4003
[XXX-XX-X-AC2-3]display hot-backup state
***************************************************************************
Vlan ID : 4003
Domain ID : 1
Link State : Connect
Peer Board MAC : 80f6-2ece-4d18
Peer Board State : Normal
Hello Interval : 2000
[XXX-XX-X-AC2-3]display device ma
Subslot 0
DEVICE_NAME : EWPXM2WCMD0
DEVICE_SERIAL_NUMBER : 210231A0HMB128000115
MAC_ADDRESS : 80F62ECE4D40
MANUFACTURING_DATE : 2012-8-22
VENDOR_NAME : H3C
两台AC的1+1快速热备配置无误,主备状态等信息也正常。
2) 检查主备AC当前AP注册上线情况。
主AC当前AP注册在线情况:
[XXX-XX-X-AC1-3]dis wlan ap all
Total Number of APs configured : 667
Total Number of configured APs connected : 594
Total Number of auto APs connected : 0
AP Profiles
State : I = Idle, J = Join, JA = JoinAck, IL = ImageLoad
C = Config, R = Run, KU = KeyUpdate, KC = KeyCfm
备AC当前AP注册在线情况:
[XXX-XX-X-AC2-3]dis wlan ap al
Total Number of APs configured : 666
Total Number of configured APs connected : 128
Total Number of auto APs connected : 0
AP Profiles
State : I = Idle, J = Join, JA = JoinAck, IL = ImageLoad
C = Config, R = Run, KU = KeyUpdate, KC = KeyCfm
很明显可以看到,主AC上当前注册在线的AP共有594台,而备份AC上只有128台注册在线,而128正好是EWPXM2WCMD0板卡默认的管理AP数量,因此确认现场备份AC上是否添加过License,现场工程师表示License很早之前已经添加,完全足够管理当前所有AP。
3) 备AC开启debugging调试信息,排查AP注册失败原因。
[XXX-XX-X-AC2-3]
debug wlan lwapp all
t m Info: Current terminal monitor is on.
t d Info: Current terminal debugging is on.
*Dec 18 15:42:51:709 2012 XXX-XX-X-AC2-3 LWPS/7/Pkt_Rcvd:
Received Join Request from 192.168.120.249 (Length: 117)
//收到AP的注册请求
04 00 00 6f 00 00 03 02 00 67 00 00 00 00 03 00
10 00 00 00 41 10 38 09 81 00 00 00 7d 01 01 00
00 05 00 14 32 31 30 32 33 35 41 30 44 34 43 31
32 31 30 30 30 35 31 37 13 00 07 00 c4 ca d9 eb
11 80 04 00 02 01 15 2d 00 04 eb 11 80 70 6f 00
10 50 d0 8e fb 50 d0 8e fb 50 d0 8e fb 50 d0 8e
fb 68 00 07 00 00 63 a2 00 d2 01 68 00 07 00 00
63 a2 04 06 00
*Dec 18 15:42:51:709 2012 XXX-XX-X-AC2-3 LWPS/7/Event: [APID: 443] LWAPP to WMAC : Check radio configuration compatibility
*Dec 18 15:42:51:709 2012 XXX-XX-X-AC2-3 LWPS/7/Event: [APID: 443] Radio configuration with WMAC successful
*Dec 18 15:42:51:709 2012 XXX-XX-X-AC2-3 LWPS/7/Event: [APID: 443] Checking of radio configuration with WMAC successful
*Dec 18 15:42:51:710 2012 XXX-XX-X-AC2-3 LWPS/7/Event: [AC App Module Process VendorTLV] APId: 443; TLV ElementId: 1030; ResultCode: 1
*Dec 18 15:42:51:710 2012 XXX-XX-X-AC2-3 LWPS/7/Event: [APID: 443 State: Idle] Join Request received
*Dec 18 15:42:51:710 2012 XXX-XX-X-AC2-3 LWPS/7/Error: [ApId : 443] Unable to provide service. Reason : Resource depletion
//提示Error信息,无法提供服务:原因是资源受限
*Dec 18 15:42:51:710 2012 XXX-XX-X-AC2-3 LWPS/7/Pkt_Send:
Sent Join Response to 192.168.120.249 (Length: 25)
04 00 00 13 00 00 04 02 00 0b 00 00 00 00 02 00
04 00 00 00 01 3c 00 01 02
*Dec 18 15:42:51:714 2012 XXX-XX-X-AC2-3 LWPS/7/Pkt_Rcvd:
Received Join Request from 192.168.120.182 (Length: 117)
//收到AP的注册请求
04 00 00 6f 00 00 03 02 00 67 00 00 00 00 03 00
10 00 00 00 41 10 38 09 81 00 00 00 7d 01 01 00
00 05 00 14 32 31 30 32 33 35 41 30 44 34 43 31
32 31 30 30 31 35 37 33 13 00 07 00 c4 ca d9 ea
63 30 04 00 02 01 15 2d 00 04 ea 63 30 b9 6f 00
10 50 d0 8e f6 50 d0 8e f6 50 d0 8e f6 50 d0 8e
f6 68 00 07 00 00 63 a2 00 d2 01 68 00 07 00 00
63 a2 04 06 00
*Dec 18 15:42:51:714 2012 XXX-XX-X-AC2-3 LWPS/7/Event: [APID: 454] LWAPP to WMAC : Check radio configuration compatibility
*Dec 18 15:42:51:714 2012 XXX-XX-X-AC2-3 LWPS/7/Event: [APID: 454] Radio configuration with WMAC successful
*Dec 18 15:42:51:714 2012 XXX-XX-X-AC2-3 LWPS/7/Event: [APID: 454] Checking of radio configuration with WMAC successful
*Dec 18 15:42:51:714 2012 XXX-XX-X-AC2-3 LWPS/7/Event: [AC App Module Process VendorTLV] APId: 454; TLV ElementId: 1030; ResultCode: 1
*Dec 18 15:42:51:715 2012 XXX-XX-X-AC2-3 LWPS/7/Event: [APID: 454 State: Idle] Join Request received
*Dec 18 15:42:51:715 2012 XXX-XX-X-AC2-3 LWPS/7/Error: [ApId : 454] Unable to provide service. Reason : Resource depletion
//提示Error信息,无法提供服务:原因是资源受限
Dec 18 15:42:52:414 2012 XXX-XX-X-AC2-3 LWPS/7/Event: Failed to connect to AP,AP Join Rate exceed Threshold
*Dec 18 15:42:52:415 2012 XXX-XX-X-AC2-3 LWPS/7/Error: Join Request is dropped due to Join process failed
//提示Error信息,因为注册进程失败导致注册请求拒绝
通过debugging调试信息,很明显提示Error信息得知无法注册的原因是由于资源受限,应该是新添加的License没有生效导致,经过和现场工程是再次确认并查看日志信息后得知,现场添加完License后并未重启设备,导致新增License没有生效。
四、解决方法:
重启备份AC后,License生效,所有新增AP正常注册上线,恢复正常。
注:在现网应用的设备添加License后,一定要重启设备后License才能生效,在重启设备前,一定要做好各准备、备份工作,涉及多台AC重启时,一定要根据主备规划好重启顺序,保证现网正常业务不受影响。
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