Aironet 1200 - Axis Camera

Hello!

I have a strange issue I was wondering if someone could shed some light on. I have 2 aironet 1200.. Antenna mounted outside on roof.. line of site across a street to another building.

1 access point setup as an Access Point. The remote 1200 setup as a Workgroup Bridge.

I can setup a ping to the other site and it will ping all day long. As soon as I try to hit an axis camera over there i will loose connection after just a couple mins. I have messed around with frame per second for the camera thinking too much video was killing things. No luck... As soon as I restart the main access point it comes right back up.

Here is some info from the event log on the bridge:

Error Interface Dot11Radio0, changed state to down Warning Packet to client 001b.536c.65f0 reached max retries, removing the client Warning Interface Dot11Radio0, parent lost: Too many retries Notification Line protocol on Interface Dot11Radio0, changed state to up

Any thoughts? I am going to try and get another device over there that I can send large amounts of data from to see if it a bandwith issue...

Jerry

Reply to
gdbrown
Loading thread data ...

Check the signal levels.

ap# sho dot11 statistics client

Signal quality is expessed in SNR. If you have a G radio, I'd recommend a design that will get you 30+ SNR to take advantage of the faster G signalling rates. If you have a B radio, 20+ SNR will do.

You might have have interference despite having a strong signal. This command will give you an indication that you might have interference when you see that the radio is falling back to slower signalling rates.

ap# sho int d0 statistics

Also: Try changing the channel. Try a directional antenna.

Reply to
<andrew

Thanks for the info. Going to look into it. Perhaps we are asking to much from this unit? (Looking to stream a video feed from a building across the street to the main office.. (about 1 frame per second)...

There is even talk of adding one more camera..

I did make a change and set the main aironet unit in the main building to a Bridge instead of an access point....

Jerry

Reply to
gdbrown

I have a number of Cisco 1200's deployed as bridges. Using the A radios, I get real-world throughput of 20Mbits/sec half-duplex. using G radios should get you something similar. The B radio should get you 5.5Mbits/s.

I have these set up as root bridge and non-root bridge pairs. I'm not quite sure what the practical distinction between a workgroup bridge and a non-root bridge is.

Reply to
<andrew

22-001b.536c.65f0 pak in 63390 bytes in 7055322 pak out 78761 bytes out 109822482 dup 0 decrpyt err 0 mic mismatch 0 mic miss 0 tx retries 55816 data retries 34090 rts retries 21726 signal strength 74 signal quality 26

DOT11 Statistics (Cumulative Total/Last 5 Seconds): RECEIVER TRANSMITTER Host Rx Bytes: 128791486 /11979 Host Tx Bytes:

2658974530 /194629 Unicasts Rx: 1090890 / 90 Unicasts Tx: 1941686 / 150 Unicasts to host: 1090890 / 90 Unicasts by host: 1941686 / 150 Broadcasts Rx: 517845 / 52 Broadcasts Tx: 138358 / 0 Beacons Rx: 515119 / 50 Beacons Tx: 0 / 0 Broadcasts to host: 517845 / 52 Broadcasts by host: 138358 / 0 Multicasts Rx: 24 / 0 Multicasts Tx: 0 / 0 Multicasts to host: 24 / 0 Multicasts by host: 0 / 0 Mgmt Packets Rx: 0 / 0 Mgmt Packets Tx: 0 / 0 RTS received: 1781496 / 81 RTS transmitted: 1001108 / 48 Duplicate frames: 27607 / 1 CTS not received: 515359 / 22 CRC errors: 50930 / 8 Unicast Fragments Tx: 1941519 / 150 WEP errors: 0 / 0 Retries: 1300148 / 70 Buffer full: 0 / 0 Packets one retry: 3845 / 0 Host buffer full: 0 / 0 Packets > 1 retry: 272846 / 20 Header CRC errors: 2154294 / 199 Protocol defers: 53768 / 4 Invalid header: 1231 / 0 Energy detect defers: 13329 / 1 Length invalid: 0 / 0 Jammer detected: 0 / 0 Incomplete fragments: 0 / 0 Packets aged: 0 / 0 Rx Concats: 0 / 0 Tx Concats: 0 / 0

LOST PARENT COUNTS ASSOCIATION STATISTICS Maximum retries: 19 / 0 SSID mismatched: 0 / 0 No beacons: 2 / 0 Not specified AP: 0 / 0

Average retry level: 0 / 0 Rates mismatched: 0 / 0 Deauthenicated: 0 / 0 Privacy mismatched: 0 / 0 Disassociated: 0 / 0 Authentication rejects: 0 / 0 Time base lost: 0 / 0 Association timeout: 0 / 0 Host request: 0 / 0 LEAP successes: 0 / 0 Better parent found: 0 / 0 LEAP failures: 0 / 0 LEAP timeouts: 0 / 0 LEAP key len fails: 0 / 0 PHY element mismatch: 0 / 0 WPA IE mismatch: 0 / 0

RATE 1.0 Mbps Rx Packets: 1343546 / 134 Tx Packets:

168028 / 8 Rx Bytes: 114631362 /11442 Tx Bytes: 230978567 /10924 RTS Retries: 267302 / 31 Data Retries: 237041 / 25

RATE 2.0 Mbps Rx Packets: 237812 / 13 Tx Packets:

175820 / 34 Rx Bytes: 16485930 / 920 Tx Bytes: 240715876 /44295 RTS Retries: 46548 / 0 Data Retries: 61981 / 2

RATE 5.5 Mbps Rx Packets: 20359 / 0 Tx Packets:

127791 / 33 Rx Bytes: 1420258 / 0 Tx Bytes: 175330233 /44360 RTS Retries: 7500 / 0 Data Retries: 18979 / 2 RATE 6.0 Mbps Rx Packets: 2286 / 0 Tx Packets: 104796 / 2 Rx Bytes: 162279 / 0 Tx Bytes: 143671430 /1899 RTS Retries: 7876 / 0 Data Retries: 16657 / 2

RATE 9.0 Mbps Rx Packets: 765 / 0 Tx Packets:

102829 / 0 Rx Bytes: 58127 / 0 Tx Bytes: 140755527 / 0 RTS Retries: 8221 / 0 Data Retries: 17309 / 0

RATE 11.0 Mbps Rx Packets: 627 / 0 Tx Packets:

75702 / 0 Rx Bytes: 44485 / 0 Tx Bytes: 103689334 / 0 RTS Retries: 7310 / 0 Data Retries: 11579 / 0

RATE 12.0 Mbps Rx Packets: 350 / 0 Tx Packets:

73347 / 0 Rx Bytes: 75244 / 0 Tx Bytes: 99477957 / 0 RTS Retries: 8399 / 0 Data Retries: 15260 / 0

RATE 18.0 Mbps Rx Packets: 114 / 0 Tx Packets:

100803 / 0 Rx Bytes: 39571 / 0 Tx Bytes: 137312204 / 0 RTS Retries: 15312 / 0 Data Retries: 30894 / 0

RATE 24.0 Mbps Rx Packets: 1018 / 0 Tx Packets:

190228 / 40 Rx Bytes: 73800 / 0 Tx Bytes: 258430362 /54755 RTS Retries: 48299 / 2 Data Retries: 95490 / 2

RATE 36.0 Mbps Rx Packets: 1088 / 0 Tx Packets:

812569 / 0 Rx Bytes: 81586 / 0 Tx Bytes: 1125739113 / 0 RTS Retries: 96422 / 0 Data Retries: 282606 / 0

RATE 48.0 Mbps Rx Packets: 277 / 0 Tx Packets:

11660 / 0 Rx Bytes: 19293 / 0 Tx Bytes: 1713652 / 0 RTS Retries: 42 / 0 Data Retries: 811 / 0

RATE 54.0 Mbps Rx Packets: 1701 / 1 Tx Packets:

7 / 0 Rx Bytes: 163734 / 90 Tx Bytes: 378 / 0 RTS Retries: 0 / 0 Data Retries: 0 /
Reply to
gdbrown

Jerry,

Try configuring the following on both APs' radio interfaces:

packet retries 128 drop-packet

This will keep them from dropping the connection when they have a hard time getting a packet through the channel.

Aaron

Reply to
Aaron Leonard

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