JonesNOR
6 Indium

Network Printer Issues

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Hi,

I have some printing issues after implementing PowerConnect 6248 stacks with VLAN.

Clients -> Printers = Success
Print Servers -> Printers = Success
Clients -> Print Servers -> Printers = FAIL or UNSTABLE (Print some pages then quit) 

Error code on Canon is #857, which is some kind of connectivity issue.

Clients: 172.31.3.0/24 (Static VLAN)
Print Servers: 192.0.2.0/24 (Static VLAN)
Printers: 192.0.2.0/24

Firewall: Checkpoint (Sub-interfaces, trunking)

Everything in my network works, except printing with the print servers.  Printers are different brands (Canon & Lexmark), and 1 print server is physical while the other is VMWARE.

I know this is some network issue because it started as soon as we implemented the new switches
There is server connectivity, its just in the printing process!

Any help is appreciated!!!

 

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JonesNOR
6 Indium

Re: Network Printer Issues

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Print -> Advanced -> Print as image.  Problem solved.  Adobe drivers creating problems.

4 Replies
8 Krypton

Re: Network Printer Issues

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My guess would be the switch is dropping packets because some over subscription that happens when yo are using the print servers from a client.

Without any other data, my suggestion would be to enable flow control on your network.  That means on your clients, servers, switches and printers.

If this does not work, please do the following:

- clear the counters on the switch (command is "clear counters")

- print something so that the issue occurs

- retrieve the counters from the switch ports connected to client, print server, printer with the follwoing commands

show rmon statistics Ethernet 1/xgX

show interfaces counters ethernet 1/xgX

show statistics ethernet 1/xgX



- post the output of the commands and your configuration file

 

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JonesNOR
6 Indium

Re: Network Printer Issues

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That sounds like a plan! I will do that. Thanks

Client (192.0.2.X) -> Print server (192.0.2.X) -> Printer (192.0.2.X) = SUCCESS
Print server (192.0.2.X) -> Printer (192.0.2.X) = SUCCESS
Client (172.31.X.X) -> Printer (192.0.2.X) = SUCCESS
Client (172.31.X.X) -> Print Server (192.0.2.X) -> Printer (192.0.2.X) = FAIL

Above you can see that i have no problems using the print server when the client is on the same network. 😃

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JonesNOR
6 Indium

Re: Network Printer Issues

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I enabled flow control on all switches, but to no avail.  I do get alot of "TCP ACKed lost segment" and "TCP dupe ACK's"

It seems that printing test pages always works, but PDF or bigger "prints" fail.  These does not fail howerver when printing directly etc as noted above.

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JonesNOR
6 Indium

Re: Network Printer Issues

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Print -> Advanced -> Print as image.  Problem solved.  Adobe drivers creating problems.