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Wireless failing everyday

king06aaa
Level 1
Level 1

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?

16 Replies 16

Are those APs connected to WLC or standalone?

Are all of them plugged into the same network branch?

The AP's are all on the same subnet but they are standalone. They are plugged into different switches

Have you tried to syslog a couple of them to a log server to get a clue?

Are they perfectly working right before rebooting?

I have them logging to syslog and there are NO error messages.

And they are working perfectly before they reboot

ericgarnel
Level 7
Level 7

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?

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.

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?

I hate to sound ignorant, but how do I do what you are asking? Like the interface counters and the routing questions?

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

Leo Laohoo
Hall of Fame
Hall of Fame

Do you have a time of when all of the eight AP would reboot? Are the time consistent?

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.

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.

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.

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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