Ignoring the wireless part of the JetDirect box and using just the Ethernet port all is fine.
Over the last few days I think we have the culprit(s). Either the WCS and/or the WLC's. We installed a new AP (no config) and it allowed devices onto the network at 11mbps. After restarting the JetDirect box numerous times, the connection was fine - wired could telnet etc every single time.
However, when I used... or tried to use... the WCS to config the AP, to give it a name and nominate a primary and secondary Controller, something goes wrong. Only some of the config sticks, its rename. The primary and secondary controller entries fail to save. The AP is down and will accept no devices. Of course when it tried to config, it dropped all devices, including the JetDirect, which switched to another configured AP and voila! No Telnet HTTP from a wired PC.
So... We have a problem. But at least we are narrowing it down. Im not sure how the WCS or WLC could stop a wired PC Telneting to a JetDirect box, but so far thats what it looks like.
As far as I could verify in some WLC versions, when we attempt to change the AP name, the AP radios may reset and the WLC is also popping up a message such as "Changing AP name may momentarily disrupt clients connected to this AP".
So this might explain why the print server wireless connection drops while changing the AP name.
Regarding the primary and secondary WLC settings on the AP, we may suspect that the AP is attempting to re-register to the new primary WLC and so it temporarily interrupts the services.
The main recommendation would anyway be to open a TAC case if this requires some more advanced investigations:
Transferring Crash file from standby:
Login to the Active WLC in HA.
(Cisco Controller) >transfer upload datatype crash
(Cisco Controller) >transfer upload filename <Desired filename>
(Cisco Controller) >transfer up...
This is the start of a display filter cross reference between Wireshark and OmniPeek.
The 1st installment is a table of advanced filters. More filters will be added as time allows.
It is a living doc, so check back for changes every so often
Please feel ...
I have created a Powershell script to automatically add a Wireless Guest User on Cisco WLCs. (tested on 2500 Series)
The script should be completely self explanatory.
Powershell SNMP Module (Install-Module -Name SNMP)
SNMP Write Access to...