Cannot print

[trantriduc1610]

I have the problem like that:
- When I connect the printer Bixolon R310 (BXL/POS)  to AP Cisco ( local mode) of WLC2500 and AP Cisco (flex mode) of EWC C9115, I can print normally.
- When I connect printer Bixolon L310 (SLCS,BPL-Z,BPL-C) to AP Cisco ( local mode) of WLC2500 I can print normally, but if I connect to AP Cisco (flex mode) of EWC C9115, I can't print ( but can ping normal)

[Mark Elsen]

  -  @trantriduc1610             What error  do you get  on the client when trying to print ?

  M.

[trantriduc1610]

No information error in client.
So I check log in the server Linux ( Source reques print):

2025-08-11 14:30:38.909 [Timer] [INFO ] MessageSender - Sending message: routingKey printer-routing-key, message= Message [type=1, no=null, msg=17279]
2025-08-11 14:30:42.563 [Timer] [WARN ] PrintingLabelTask - Could not connect to printer 172.24.23.124:9100

[Mark Elsen]

  - @trantriduc1610      Check 'printing reachability' from you wireless client  using :
                                               nmap -p 9100 -sV  --reason  172.24.23.124

  M.

[trantriduc1610]

so i don't know if there is any configuration missing or service on EWC?

[trantriduc1610]

I think the problem is flex mode. 
Because when i recheck: connect printer to AP flex mode from WLC2500, I still cannot print, just ping only.

[MHM Cisco World]

Printer in flex is reachable by AP ?

Flex the switching is done by AP not tunnel to EWC

MHM

[trantriduc1610]

Tks !

I was test again with model L310. If I connect to AP (flex mode from WLC2500) I still cannot print, just can ping.
So if I want to print L310 with connect AP from EWC C9115, I need to do what?

[MHM Cisco World]

I was test again with model L310. If I connect to AP (flex mode from WLC2500) I still cannot print, just can ping. <<- key here

Ping no print 

Do you use any ACL under SVI in SW?

MHM

[trantriduc1610]

Yes, I have ACL in Core switch, but I already permit for this vlan.

[MHM Cisco World]

Add to this acl

Ip deny deny log 

And check log

MHM

[Mark Elsen]

   - @trantriduc1610    I would also advice that you have a test and or try disabling peer-to-peer blocking for the
                                   particular WLAN : (GUI) Configuration > Wireless > WLANs.
                                                                              Click the WLAN ID of the SSID you want to modify
                                                                               Go to the Advanced tab.
                                                                                 Locate the P2P Blocking drop-down menu
                                                                                 Select Disabled to turn off P2P blocking
                                                                                   Click Apply to save the changes

  M.

[trantriduc1610]

Actually, I have already disbaled p2p 

[Mark Elsen]

  - @trantriduc1610   Ok,  Check 'printing reachability' from you wireless client  using :
                                               nmap -p 9100 -sV  --reason  172.24.23.124

  M.