01-15-2009 07:36 AM - edited 07-03-2021 05:00 PM
Every day at least once and sometimes twice, I have several access points that reboot. They all do it at precisely the same time and it is usually the same AP's - about 8 of them.
I have other access points that do not go down.
Any ideas? Could this be a firmware issue?
01-15-2009 07:53 AM
Are those APs connected to WLC or standalone?
Are all of them plugged into the same network branch?
01-15-2009 07:55 AM
The AP's are all on the same subnet but they are standalone. They are plugged into different switches
01-15-2009 08:12 AM
Have you tried to syslog a couple of them to a log server to get a clue?
Are they perfectly working right before rebooting?
01-15-2009 08:35 AM
I have them logging to syslog and there are NO error messages.
And they are working perfectly before they reboot
01-15-2009 08:21 AM
This sounds more like a routing or spanning-tree issue. What do the switch and/or router logs say?
It could also be caused by network congestion that is affecting routing or spanning-tree. Are you running any backups over the network or other bandwidth intensive jobs at that time?
01-15-2009 08:37 AM
There are no errors on any of the switches.
I thinking that it could be congestion, but the access points are spread all over the network. Different buildings, different switches, etc.
01-15-2009 09:20 AM
If you are not seeing any errors, what are the interface counters indicating?
Also, are you using dynamic routing? what do the route tables look like?
01-15-2009 10:40 AM
I hate to sound ignorant, but how do I do what you are asking? Like the interface counters and the routing questions?
01-15-2009 12:53 PM
on the switches & routers:
Without knowing how your network is built, I can only speculate at this point
The interface counters:
show interface <>
example:
show6506A>sh int gigabitEthernet 2/1
GigabitEthernet2/1 is up, line protocol is up (connected)
Hardware is C6k 1000Mb 802.3, address is 0013.c40f.0770 (bia 0013.c40f.0770)
Description: Hall2_2 AP
MTU 1500 bytes, BW 1000000 Kbit, DLY 10 usec,
reliability 255/255, txload 1/255, rxload 1/255
show ip route
nat1>sh ip route
Codes: C - connected, S - static, R - RIP, M - mobile, B - BGP
D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area
N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2
E1 - OSPF external type 1, E2 - OSPF external type 2
i - IS-IS, su - IS-IS summary, L1 - IS-IS level-1, L2 - IS-IS level-2
ia - IS-IS inter area, * - candidate default, U - per-user static route
o - ODR, P - periodic downloaded static route
Gateway of last resort is 192.168.6.1 to network 0.0.0.0
C 192.168.46.0/24 is directly connected, GigabitEthernet0/1.46
C 192.168.47.0/24 is directly connected, GigabitEthernet0/1.47
C 192.168.44.0/24 is directly connected, GigabitEthernet0/1.44
01-15-2009 12:59 PM
Do you have a time of when all of the eight AP would reboot? Are the time consistent?
01-15-2009 01:10 PM
For example, they all rebooted at 3:51 today. The time isn't consistent on a day to day basis. It happens at different times during the day.
01-16-2009 07:05 AM
Sorry, I did not put two & two together earlier.
They are autonomous and they reboot?
I do not think that network congestion or spanning-tree issues would cause them to reboot.
It sounds like you have may power issues.
01-18-2009 09:04 PM
I'll agree with you on this one. All AP's are all on the same location/subnet and failing simultaneously could mean that there may be a power issue or some sort.
01-18-2009 09:20 PM
Except that the user mentioned these are in different buildings in a previous reply. I'd like to think that if multiple APs are rebooting due to power in different buildings, there would be other network equipment that was noticeably down...
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