We have about 8 HP (AIO) printers at the office who have printing issues from time to time. Prints are really slow, and sometimes even fail. In such case the printer seems to receive a printjob, but fails to print in the end. All printers are fairly new (2 months) I made a packetcapture of a failed print that didnt came out. See: http://s18.postimg.org/84me57oeh/wireshark_print_issues.png I`m wondering how I can tell this issue is on the printers end or on the network. We have a PFsense router in place and all MTU sizes are default. Looking forward to some pointers :) asked 27 Aug '15, 05:37  jortie edited 27 Aug '15, 05:38 |
One Answer:
So the receive window at the printer is full ( zero window in packet #22). And after the client is probing the zero window but the printer always answers with a zero window size. So the initial window of this printer is with 17500 (Frame#2; Field: Calculated Window Size in TCP Header) really low. Have you talked to HP? answered 27 Aug '15, 09:40  Christian_R edited 27 Aug '15, 12:45 Thank you very much. I havent talked to HP because I wanted to be sure first if the network might be to blame. Can we reliably say this is a printer issue? (27 Aug '15, 10:46) jortie It could be the printer, the firmware of the printer, not enough RAM at the printer, or the file itsself could not be printed. But if there is no Layer4 device between the client and the printer, than we can reliably say it is not the network. (27 Aug '15, 11:35) Christian_R |
You might want to start posting the capture file on cloudshark and define which IP address is what node.
192.168.100.5 is the printer. The other one is the client. https://www.cloudshark.org/captures/10f1058e0f93