Over the last 14 days the SMs registered to a 900MHz AP have averaged between 3 and 4 sessions / hour. After documenting session status, I rebooted the AP and watched the SMs reregister.
As shown below, all SMs required multiple registrations before establihing a session. In general, the RSSI, Jitter, and Power Levels suggest a more roubust connection than my customers are seeing (>1 session/hour is a real issue). Only the Jitter measure appears borderline in some cases (Tech has suggested than anything > 3 is an issue).
Any thoughts? I have several other sites using the same antenna and general configuration (1 control slot, 60% downlink, no NAT nor bandwidth limitations) w/o this issue?
Does anyone know precisely what Jitter is measuring?
Device Information
Device type 900MHz - Multipoint - Access Point - 0a-00-3e-90-02-b0
Software Version CANOPY 6.1 Dec 08 2004 09:22:02 AP-DES
Software Boot Version CANOPYBOOT 3.0
FPGA Version 111604 (DES Sched)
Uptime 00:13:48
Session Status List
LUID: 002 : MAC: 0a-00-3e-90-07-70 State: IN SESSION (Encrypt Active)
Site Name : Byers
Software Version : CANOPY 6.1 Dec 08 2004 09:22:02
Software Boot Version : CANOPYBOOT 3.0
FPGA Version : 111604 (DES Sched)
Session Timeout: 7, AirDelay 108
Session Count: 2, Reg Count 1, Re-Reg Count 3
RSSI (Avg/Last): 2017/2018 Jitter (Avg/Last): 2/2 Power Level (Avg/Last): -60/-60
DnRate: 10000 DnLimit: 10000 UpRate: 10000 UpLimit: 10000 (kbit)
LUID: 003 : MAC: 0a-00-3e-90-07-bc State: IN SESSION (Encrypt Active)
Site Name : Penninger
Software Version : CANOPY 6.1 Dec 08 2004 09:22:02
Software Boot Version : CANOPYBOOT 3.0
FPGA Version : 111604 (DES Sched)
Session Timeout: 27, AirDelay 55
Session Count: 10, Reg Count 1, Re-Reg Count 35
RSSI (Avg/Last): 2000/2025 Jitter (Avg/Last): 2/2 Power Level (Avg/Last): -60/-60
DnRate: 10000 DnLimit: 10000 UpRate: 10000 UpLimit: 10000 (kbit)
LUID: 004 : MAC: 0a-00-3e-90-05-b4 State: IN SESSION (Encrypt Active)
Site Name : Ghio
Software Version : CANOPY 6.1 Dec 08 2004 09:22:02
Software Boot Version : CANOPYBOOT 3.0
FPGA Version : 111604 (DES Sched)
Session Timeout: 12, AirDelay 60
Session Count: 1, Reg Count 1, Re-Reg Count 2
RSSI (Avg/Last): 2110/2103 Jitter (Avg/Last): 2/1 Power Level (Avg/Last): -58/-58
DnRate: 10000 DnLimit: 10000 UpRate: 10000 UpLimit: 10000 (kbit)
LUID: 005 : MAC: 0a-00-3e-90-07-d3 State: IN SESSION (Encrypt Active)
Site Name : Flaherty
Software Version : CANOPY 6.1 Dec 08 2004 09:22:02
Software Boot Version : CANOPYBOOT 3.0
FPGA Version : 111604 (DES Sched)
Session Timeout: 7, AirDelay 35
Session Count: 2, Reg Count 1, Re-Reg Count 6
RSSI (Avg/Last): 2358/2338 Jitter (Avg/Last): 2/2 Power Level (Avg/Last): -52/-52
DnRate: 10000 DnLimit: 10000 UpRate: 10000 UpLimit: 10000 (kbit)
LUID: 006 : MAC: 0a-00-3e-90-05-f2 State: IN SESSION (Encrypt Active)
Site Name : Van Dyke
Software Version : CANOPY 6.1 Dec 08 2004 09:22:02
Software Boot Version : CANOPYBOOT 3.0
FPGA Version : 111604 (DES Sched)
Session Timeout: 16, AirDelay 106
Session Count: 5, Reg Count 1, Re-Reg Count 32
RSSI (Avg/Last): 2210/2212 Jitter (Avg/Last): 2/1 Power Level (Avg/Last): -55/-55
DnRate: 10000 DnLimit: 10000 UpRate: 10000 UpLimit: 10000 (kbit)
LUID: 007 : MAC: 0a-00-3e-90-07-d0 State: IN SESSION (Encrypt Active)
Site Name : Miller
Software Version : CANOPY 6.1 Dec 08 2004 09:22:02
Software Boot Version : CANOPYBOOT 3.0
FPGA Version : 111604 (DES Sched)
Session Timeout: 10, AirDelay 27
Session Count: 13, Reg Count 1, Re-Reg Count 75
RSSI (Avg/Last): 1667/1712 Jitter (Avg/Last): 3/2 Power Level (Avg/Last): -67/-66
DnRate: 10000 DnLimit: 10000 UpRate: 10000 UpLimit: 10000 (kbit)
LUID: 008 : MAC: 0a-00-3e-90-07-a1 State: IN SESSION (Encrypt Active)
Site Name : Pavon
Software Version : CANOPY 6.1 Dec 08 2004 09:22:02
Software Boot Version : CANOPYBOOT 3.0
FPGA Version : 111604 (DES Sched)
Session Timeout: 7, AirDelay 113
Session Count: 1, Reg Count 1, Re-Reg Count 9
RSSI (Avg/Last): 1873/1867 Jitter (Avg/Last): 2/3 Power Level (Avg/Last): -62/-63
DnRate: 10000 DnLimit: 10000 UpRate: 10000 UpLimit: 10000 (kbit)
LUID: 009 : MAC: 0a-00-3e-90-03-e7 State: IN SESSION (Encrypt Active)
Site Name : Johnson, J
Software Version : CANOPY 6.1 Dec 08 2004 09:22:02
Software Boot Version : CANOPYBOOT 3.0
FPGA Version : 111604 (DES Sched)
Session Timeout: 23, AirDelay 119
Session Count: 4, Reg Count 1, Re-Reg Count 24
RSSI (Avg/Last): 1668/1664 Jitter (Avg/Last): 3/3 Power Level (Avg/Last): -67/-67
DnRate: 10000 DnLimit: 10000 UpRate: 10000 UpLimit: 10000 (kbit)
LUID: 010 : MAC: 0a-00-3e-90-07-cd State: IN SESSION (Encrypt Active)
Site Name : Dowd
Software Version : CANOPY 6.1 Dec 08 2004 09:22:02
Software Boot Version : CANOPYBOOT 3.0
FPGA Version : 111604 (DES Sched)
Session Timeout: 14, AirDelay 42
Session Count: 4, Reg Count 1, Re-Reg Count 15
RSSI (Avg/Last): 1670/1678 Jitter (Avg/Last): 3/3 Power Level (Avg/Last): -67/-66
DnRate: 10000 DnLimit: 10000 UpRate: 10000 UpLimit: 10000 (kbit)
LUID: 011 : MAC: 0a-00-3e-90-02-f8 State: IN SESSION (Encrypt Active)
Site Name : Araujo
Software Version : CANOPY 6.1 Dec 08 2004 09:22:02
Software Boot Version : CANOPYBOOT 3.0
FPGA Version : 111604 (DES Sched)
Session Timeout: 9, AirDelay 55
Session Count: 4, Reg Count 1, Re-Reg Count 19
RSSI (Avg/Last): 1648/1682 Jitter (Avg/Last): 2/4 Power Level (Avg/Last): -67/-66
DnRate: 10000 DnLimit: 10000 UpRate: 10000 UpLimit: 10000 (kbit)
LUID: 012 : MAC: 0a-00-3e-90-07-c3 State: IN SESSION (Encrypt Active)
Site Name : Jones
Software Version : CANOPY 6.1 Dec 08 2004 09:22:02
Software Boot Version : CANOPYBOOT 3.0
FPGA Version : 111604 (DES Sched)
Session Timeout: 12, AirDelay 28
Session Count: 5, Reg Count 1, Re-Reg Count 19
RSSI (Avg/Last): 2236/2240 Jitter (Avg/Last): 3/1 Power Level (Avg/Last): -55/-55
DnRate: 10000 DnLimit: 10000 UpRate: 10000 UpLimit: 10000 (kbit)
LUID: 013 : MAC: 0a-00-3e-90-06-27 State: IN SESSION (Encrypt Active)
Site Name : Tucker
Software Version : CANOPY 6.1 Dec 08 2004 09:22:02
Software Boot Version : CANOPYBOOT 3.0
FPGA Version : 111604 (DES Sched)
Session Timeout: 22, AirDelay 122
Session Count: 6, Reg Count 1, Re-Reg Count 23
RSSI (Avg/Last): 1894/1886 Jitter (Avg/Last): 2/2 Power Level (Avg/Last): -62/-62
DnRate: 10000 DnLimit: 10000 UpRate: 10000 UpLimit: 10000 (kbit)
LUID: 014 : MAC: 0a-00-3e-90-05-af State: IN SESSION (Encrypt Active)
Site Name : Michael
Software Version : CANOPY 6.1 Dec 08 2004 09:22:02
Software Boot Version : CANOPYBOOT 3.0
FPGA Version : 111604 (DES Sched)
Session Timeout: 21, AirDelay 64
Session Count: 6, Reg Count 1, Re-Reg Count 38
RSSI (Avg/Last): 2057/2051 Jitter (Avg/Last): 2/2 Power Level (Avg/Last): -59/-59
DnRate: 10000 DnLimit: 10000 UpRate: 10000 UpLimit: 10000 (kbit)
LUID: 015 : MAC: 0a-00-3e-90-07-3d State: IN SESSION (Encrypt Active)
Site Name : Ward
Software Version : CANOPY 6.1 Dec 08 2004 09:22:02
Software Boot Version : CANOPYBOOT 3.0
FPGA Version : 111604 (DES Sched)
Session Timeout: 27, AirDelay 109
Session Count: 2, Reg Count 1, Re-Reg Count 5
RSSI (Avg/Last): 1772/1761 Jitter (Avg/Last): 2/3 Power Level (Avg/Last): -64/-65
DnRate: 10000 DnLimit: 10000 UpRate: 10000 UpLimit: 10000 (kbit)
LUID: 016 : MAC: 0a-00-3e-90-07-ca State: IN SESSION (Encrypt Active)
Site Name : Frohock
Software Version : CANOPY 6.1 Dec 08 2004 09:22:02
Software Boot Version : CANOPYBOOT 3.0
FPGA Version : 111604 (DES Sched)
Session Timeout: 26, AirDelay 7
Session Count: 1, Reg Count 1, Re-Reg Count 5
RSSI (Avg/Last): 2399/2404 Jitter (Avg/Last): 2/2 Power Level (Avg/Last): -51/-51
DnRate: 10000 DnLimit: 10000 UpRate: 10000 UpLimit: 10000 (kbit)
LUID: 017 : MAC: 0a-00-3e-90-04-c8 State: IN SESSION (Encrypt Active)
Site Name : Mc Call
Software Version : CANOPY 6.1 Dec 08 2004 09:22:02
Software Boot Version : CANOPYBOOT 3.0
FPGA Version : 111604 (DES Sched)
Session Timeout: 23, AirDelay 67
Session Count: 10, Reg Count 6, Re-Reg Count 63
RSSI (Avg/Last): 1422/1425 Jitter (Avg/Last): 4/3 Power Level (Avg/Last): -78/-77
DnRate: 10000 DnLimit: 10000 UpRate: 10000 UpLimit: 10000 (kbit)
Are you running harware or software scheduler? Also, do you have Transmit Frame Spreading enabled or disabled?
After speaking with tech support, I took AP back to software scheduling (CNUT tool) to check status of “Transmit Frame Speading” configuration. It was checked; it is disabled now and after reboot all SMs registered upon seeing the AP - no multiple sessions to register (well done Ben!).
I’ll try going back to hardware scheduling during tonight’s window.
I’m glad it looks much better now.
Please post your results after moving back to hardware scheduler.
Good news all!
The AP is back on hardware scheduling… so far only 1 SM had a reregistration (see below) - Thank you again Ben.
I think the CNUTHwScheduler external tool should check for the Transmit Frame Spreading setting and disable it as part of moving to hardware scheduling.
I had some sort of communications issue when going from SW to HW (recovered by manually setting HW and forcing reboots on SMs and then the AP) scheduling. I went from HW to SW with no issues, but the tool hung when going back to HW.
Tim
------
Device type 900MHz - Multipoint - Access Point - 0a-00-3e-90-02-b0
Software Version CANOPY 6.1 Dec 08 2004 09:22:02 AP-DES
Software Boot Version CANOPYBOOT 3.0
FPGA Version 111604 (DES Sched)
Uptime 00:33:28
System Time 22:16:36 01/18/2005
Last NTP Time Update 22:13:56 01/18/2005
Ethernet Interface 100Base-TX Full Duplex
Access Point Stats
Registered SM Count 16
GPS Sync Pulse Status Receiving Sync
Session Status List
LUID: 002 : MAC: 0a-00-3e-90-07-cd State: IN SESSION (Encrypt Active)
Site Name : Dowd
Software Version : CANOPY 6.1 Dec 08 2004 09:22:02
Software Boot Version : CANOPYBOOT 3.0
FPGA Version : 111604 (DES Sched)
Session Timeout: 16, AirDelay 42
Session Count: 1, Reg Count 1, Re-Reg Count 0
RSSI (Avg/Last): 1634/1632 Jitter (Avg/Last): 2/2 Power Level (Avg/Last): -66/-66
DnRate: 10000 DnLimit: 10000 UpRate: 10000 UpLimit: 10000 (kbit)
LUID: 003 : MAC: 0a-00-3e-90-06-27 State: IN SESSION (Encrypt Active)
Site Name : Tucker
Software Version : CANOPY 6.1 Dec 08 2004 09:22:02
Software Boot Version : CANOPYBOOT 3.0
FPGA Version : 111604 (DES Sched)
Session Timeout: 11, AirDelay 121
Session Count: 2, Reg Count 2, Re-Reg Count 0
RSSI (Avg/Last): 1873/1873 Jitter (Avg/Last): 2/3 Power Level (Avg/Last): -61/-61
DnRate: 10000 DnLimit: 10000 UpRate: 10000 UpLimit: 10000 (kbit)
LUID: 004 : MAC: 0a-00-3e-90-03-e7 State: IN SESSION (Encrypt Active)
Site Name : Johnson, J
Software Version : CANOPY 6.1 Dec 08 2004 09:22:02
Software Boot Version : CANOPYBOOT 3.0
FPGA Version : 111604 (DES Sched)
Session Timeout: 16, AirDelay 120
Session Count: 1, Reg Count 1, Re-Reg Count 0
RSSI (Avg/Last): 1645/1642 Jitter (Avg/Last): 2/2 Power Level (Avg/Last): -66/-66
DnRate: 10000 DnLimit: 10000 UpRate: 10000 UpLimit: 10000 (kbit)
LUID: 005 : MAC: 0a-00-3e-90-05-f2 State: IN SESSION (Encrypt Active)
Site Name : Van Dyke
Software Version : CANOPY 6.1 Dec 08 2004 09:22:02
Software Boot Version : CANOPYBOOT 3.0
FPGA Version : 111604 (DES Sched)
Session Timeout: 16, AirDelay 107
Session Count: 1, Reg Count 1, Re-Reg Count 0
RSSI (Avg/Last): 2183/2177 Jitter (Avg/Last): 2/2 Power Level (Avg/Last): -55/-55
DnRate: 10000 DnLimit: 10000 UpRate: 10000 UpLimit: 10000 (kbit)
LUID: 006 : MAC: 0a-00-3e-90-07-3d State: IN SESSION (Encrypt Active)
Site Name : Ward
Software Version : CANOPY 6.1 Dec 08 2004 09:22:02
Software Boot Version : CANOPYBOOT 3.0
FPGA Version : 111604 (DES Sched)
Session Timeout: 16, AirDelay 110
Session Count: 1, Reg Count 1, Re-Reg Count 0
RSSI (Avg/Last): 1713/1676 Jitter (Avg/Last): 3/3 Power Level (Avg/Last): -65/-65
DnRate: 10000 DnLimit: 10000 UpRate: 10000 UpLimit: 10000 (kbit)
LUID: 007 : MAC: 0a-00-3e-90-04-c8 State: IN SESSION (Encrypt Active)
Site Name : Mc Call
Software Version : CANOPY 6.1 Dec 08 2004 09:22:02
Software Boot Version : CANOPYBOOT 3.0
FPGA Version : 111604 (DES Sched)
Session Timeout: 17, AirDelay 67
Session Count: 1, Reg Count 1, Re-Reg Count 0
RSSI (Avg/Last): 1396/1397 Jitter (Avg/Last): 4/4 Power Level (Avg/Last): -79/-79
DnRate: 10000 DnLimit: 10000 UpRate: 10000 UpLimit: 10000 (kbit)
LUID: 008 : MAC: 0a-00-3e-90-07-d0 State: IN SESSION (Encrypt Active)
Site Name : Miller
Software Version : CANOPY 6.1 Dec 08 2004 09:22:02
Software Boot Version : CANOPYBOOT 3.0
FPGA Version : 111604 (DES Sched)
Session Timeout: 17, AirDelay 28
Session Count: 1, Reg Count 1, Re-Reg Count 0
RSSI (Avg/Last): 1590/1575 Jitter (Avg/Last): 3/3 Power Level (Avg/Last): -68/-68
DnRate: 10000 DnLimit: 10000 UpRate: 10000 UpLimit: 10000 (kbit)
LUID: 009 : MAC: 0a-00-3e-90-05-af State: IN SESSION (Encrypt Active)
Site Name : Michael
Software Version : CANOPY 6.1 Dec 08 2004 09:22:02
Software Boot Version : CANOPYBOOT 3.0
FPGA Version : 111604 (DES Sched)
Session Timeout: 16, AirDelay 64
Session Count: 1, Reg Count 1, Re-Reg Count 0
RSSI (Avg/Last): 2039/2035 Jitter (Avg/Last): 2/2 Power Level (Avg/Last): -58/-58
DnRate: 10000 DnLimit: 10000 UpRate: 10000 UpLimit: 10000 (kbit)
LUID: 010 : MAC: 0a-00-3e-90-07-ca State: IN SESSION (Encrypt Active)
Site Name : Frohock
Software Version : CANOPY 6.1 Dec 08 2004 09:22:02
Software Boot Version : CANOPYBOOT 3.0
FPGA Version : 111604 (DES Sched)
Session Timeout: 16, AirDelay 6
Session Count: 1, Reg Count 1, Re-Reg Count 0
RSSI (Avg/Last): 2406/2426 Jitter (Avg/Last): 2/1 Power Level (Avg/Last): -50/-49
DnRate: 10000 DnLimit: 10000 UpRate: 10000 UpLimit: 10000 (kbit)
LUID: 011 : MAC: 0a-00-3e-90-07-d3 State: IN SESSION (Encrypt Active)
Site Name : Flaherty
Software Version : CANOPY 6.1 Dec 08 2004 09:22:02
Software Boot Version : CANOPYBOOT 3.0
FPGA Version : 111604 (DES Sched)
Session Timeout: 16, AirDelay 34
Session Count: 1, Reg Count 1, Re-Reg Count 0
RSSI (Avg/Last): 2342/2339 Jitter (Avg/Last): 2/2 Power Level (Avg/Last): -51/-51
DnRate: 10000 DnLimit: 10000 UpRate: 10000 UpLimit: 10000 (kbit)
LUID: 012 : MAC: 0a-00-3e-90-05-b4 State: IN SESSION (Encrypt Active)
Site Name : Ghio
Software Version : CANOPY 6.1 Dec 08 2004 09:22:02
Software Boot Version : CANOPYBOOT 3.0
FPGA Version : 111604 (DES Sched)
Session Timeout: 16, AirDelay 62
Session Count: 1, Reg Count 1, Re-Reg Count 0
RSSI (Avg/Last): 2098/2108 Jitter (Avg/Last): 2/2 Power Level (Avg/Last): -57/-57
DnRate: 10000 DnLimit: 10000 UpRate: 10000 UpLimit: 10000 (kbit)
LUID: 013 : MAC: 0a-00-3e-90-07-70 State: IN SESSION (Encrypt Active)
Site Name : Byers
Software Version : CANOPY 6.1 Dec 08 2004 09:22:02
Software Boot Version : CANOPYBOOT 3.0
FPGA Version : 111604 (DES Sched)
Session Timeout: 16, AirDelay 107
Session Count: 1, Reg Count 1, Re-Reg Count 0
RSSI (Avg/Last): 2001/2002 Jitter (Avg/Last): 2/2 Power Level (Avg/Last): -59/-59
DnRate: 10000 DnLimit: 10000 UpRate: 10000 UpLimit: 10000 (kbit)
LUID: 014 : MAC: 0a-00-3e-90-07-bc State: IN SESSION (Encrypt Active)
Site Name : Penninger
Software Version : CANOPY 6.1 Dec 08 2004 09:22:02
Software Boot Version : CANOPYBOOT 3.0
FPGA Version : 111604 (DES Sched)
Session Timeout: 16, AirDelay 56
Session Count: 1, Reg Count 1, Re-Reg Count 0
RSSI (Avg/Last): 1971/1972 Jitter (Avg/Last): 2/2 Power Level (Avg/Last): -60/-60
DnRate: 10000 DnLimit: 10000 UpRate: 10000 UpLimit: 10000 (kbit)
LUID: 015 : MAC: 0a-00-3e-90-07-a1 State: IN SESSION (Encrypt Active)
Site Name : Pavon
Software Version : CANOPY 6.1 Dec 08 2004 09:22:02
Software Boot Version : CANOPYBOOT 3.0
FPGA Version : 111604 (DES Sched)
Session Timeout: 16, AirDelay 113
Session Count: 1, Reg Count 1, Re-Reg Count 0
RSSI (Avg/Last): 1873/1876 Jitter (Avg/Last): 2/4 Power Level (Avg/Last): -61/-61
DnRate: 10000 DnLimit: 10000 UpRate: 10000 UpLimit: 10000 (kbit)
LUID: 016 : MAC: 0a-00-3e-90-07-c3 State: IN SESSION (Encrypt Active)
Site Name : Jones
Software Version : CANOPY 6.1 Dec 08 2004 09:22:02
Software Boot Version : CANOPYBOOT 3.0
FPGA Version : 111604 (DES Sched)
Session Timeout: 17, AirDelay 27
Session Count: 1, Reg Count 1, Re-Reg Count 0
RSSI (Avg/Last): 2224/2233 Jitter (Avg/Last): 2/2 Power Level (Avg/Last): -54/-54
DnRate: 10000 DnLimit: 10000 UpRate: 10000 UpLimit: 10000 (kbit)
LUID: 017 : MAC: 0a-00-3e-90-02-f8 State: IN SESSION (Encrypt Active)
Site Name : Araujo
Software Version : CANOPY 6.1 Dec 08 2004 09:22:02
Software Boot Version : CANOPYBOOT 3.0
FPGA Version : 111604 (DES Sched)
Session Timeout: 17, AirDelay 54
Session Count: 1, Reg Count 1, Re-Reg Count 0
RSSI (Avg/Last): 1720/1735 Jitter (Avg/Last): 3/2 Power Level (Avg/Last): -64/-64
DnRate: 10000 DnLimit: 10000 UpRate: 10000 UpLimit: 10000 (kbit)