2950 + Network Cameras = massive collisions

[MWM]

Our new 2950-24 EI is dedicated to nine network surveilance cameras, which feed a dedicated archive server and a link to the internal network. The cameras have trouble staying connected. Cmd Show Controllers Eth reveals massive collisions. Also no late collisions (no too-long lines).

Two cameras from Axis run (default) at 100/full. Seven Sony cameras run only at 10/half. Collision problem is common to all cameras.

Any thoughts???
Thanks,
Mike

Here are typical interface stats.
Transmit FastEthernet0/6
919,065,578 Bytes
13,388,808 Frames
401,888 Multicast frames
81,254 Broadcast frames
0 Pause frames
4,239,350 Single defer frames
0 Multiple defer frames
1,225,879 1 collision frames
2,689,665 2-15 collisions
0 Late collisions
0 Excessive collisions
13,700,544 Total collisions
0 Control frames
0 VLAN discard frames
0 Too old frames
0 Tagged frames
0 Aborted Tx frames
Receive
544,133,708 Bytes
24,510,772 Frames
0 FCS errors
0 Multicast frames
31 Broadcast frames
0 Control frames
0 Pause frames
0 Unknown opcode frames
0 Alignment errors
0 Length out of range
0 Symbol error frames
0 False carrier errors
0 Valid frames, too small
0 Valid frames, too large
0 Invalid frames, too small
0 Invalid frames, too large
0 Discarded frames
---------------------------

 

[BuckWeet]

sounds liek a duplex/speed mismatch...


BuckWeet

 

[baddos]

Make sure that auto negotiation is either turned off on the switch port and the camera or on the camera and switch port.

 

[MWM]

Thanks, guys (I guess you're guys).

Yep, tried all that.
FYI, I chose the Sony cameras (SNC-VL10N) due to a disposition to Sony quality. We also bought two Axis brand cameras. The Axis run at set-able speeds/duplex, while the Sony cams have no allowance for setting them; they default to 10/half. In fact, 100/half or full kills them.

I have tried setting the switch ports to various combinations--auto, 10/half, 100, etc.

Thanks again;

FYI again; if you want a huge data dump from the Cisco, try SHOW TECH. It gave 33 pages of config, counters, memory, port status, etc. --

Yours,
Mike