Wireless - C6180 network traffic

Product: Photosmart C6180 all-in-one

The printer has been set up wireless to share among 5 computers and works very well.  My concern is that the amount of traffic network the printer generates.

I analyzed the network traffic generated by my computer using Wireshark Analyzer (packet sniffer) network protocol.  Traffic is presented as a series of SNMP (from the computer) requests to the printer and the answers SNMP from the printer to the computer.  This status of probable reports in near real-time.

This isn't a problem, but I would like to discuss the volume of network traffic.  I see on request 20 and 20 responses per second for a single computer.  Request/responses start a port 1026 (sending a request and get an answer) then increment to the next port 1027 (request / response), increment to the port 1028 and continue.  This continues until it hits port 5000 then begins to port 1026.  About, through 4000 ports every 3 minutes.  Each request and response being about 100 bytes of information.

This traffic volume is normal?  It can be reduced?

I looked in the printer and the software congifurations to see if it can be reduced to a minimum and can not see a framework to reduce the traffic.

Well, I expected someone to complain about this. Also, I think that it is rare as well.

What you see, is the HP SW on each computer to the printer for admission to the status of vote. I think that changes of the PC port with each SNMP request but you should see that all SNMP packets going to port 161 printer and that the printer meets the port 161 originally PC port...

You'll also see shows SLP in 427 on the printer port as well (most used ARP and NETBIOS stuff).

To my dismay, this is normal (an old design in fact) and we are changing. Yes, it's a chatty Protocol but the bandwidth network should not be significant (using your numbers – I thought the refresh frequency was 1/3 Hz):

5 computers * (20 packets/SNMP-s) = 100 packets/SNMP-sec * 200 bytes/SNMP-package (estimated) = 20000 bytes/s.

(Is this a lot on a 11g wireless network has a bandwidth of?)

The real problem occurs when you have a wireless network. Because UDP is not reliable, the SNMP get s/SNMP-response may be lost, especially on the airwaves. When this happens, the SW will attempt the request again, and after a series of delays, the HP SW will think the printer is offline.

Now to answer your original question: you can remove the most background traffic by disabling the HP printer services. You will still be able to print but the scan will not work. Another option is to uninstall the HP SW and manually add the printer in Control Panel. Unfortunately, this also gives you printing without analyzing.

Tags: HP Printers

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