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?
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?
on the switches & routers:
Without knowing how your network is built, I can only speculate at this point
The interface counters:
show interface <>
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