This was a bad NIC on the

Andy White · ‎06-05-2015

Hello,

Strange issue, we have a small office with a 48 port 2960x switch that has some printers and copiers in it that have static IPs.

For some reason we find if the printer or copier is moved to a different port we can no longer ping the printer or copier, however if moved back to its original port we can. I've cleared the arp table and checked the mac address table and checked if there is port security which there isn't and the logs and I can't find a solution other than move the printer or copier into the new port and reboot the switch which fixes the issue for a few weeks.

Any ideas?

devils_advocate · ‎06-05-2015

Can you post the config of the switch?

Thanks

Andy White · ‎06-08-2015

Sure, I've attached it.

"sh ver"
Cisco IOS Software, C2960 Software (C2960-LANBASEK9-M), Version 15.0(2)SE7, RELEASE SOFTWARE (fc1)
Technical Support: http://www.cisco.com/techsupport
Copyright (c) 1986-2014 by Cisco Systems, Inc.
Compiled Thu 23-Oct-14 14:49 by prod_rel_team

ROM: Bootstrap program is C2960 boot loader
BOOTLDR: C2960 Boot Loader (C2960-HBOOT-M) Version 12.2(53r)SEY3, RELEASE SOFTWARE (fc1)

C2960_Enfield uptime is 2 days, 16 hours, 29 minutes
System returned to ROM by power-on
System image file is "flash:/c2960-lanbasek9-mz.150-2.SE7.bin"

"sh flash"

Directory of flash:/

2 drwx 256 Mar 1 1993 00:09:09 +00:00 c2960-lanbasek9-mz.150-2.SE5
570 -rwx 106 Mar 1 1993 00:09:09 +00:00 info
622 drwx 64 Feb 26 2015 18:59:01 +00:00 LOGS
655 -rwx 3096 Mar 1 1993 00:00:57 +00:00 multiple-fs
574 -rwx 11797699 Mar 1 1993 01:01:08 +00:00 c2960-lanbasek9-mz.150-2.SE7.bin
573 -rwx 736 Feb 12 2015 14:03:25 +00:00 vlan.dat
575 drwx 5376 Mar 3 1993 00:01:19 +00:00 syslog
654 -rwx 14535 Jun 5 2015 16:12:10 +01:00 config.text
650 -rwx 3819 Jun 5 2015 16:12:10 +01:00 private-config.text

32514048 bytes total (3704320 bytes free)

Thanks

Andy White · ‎06-10-2015

Just wondered if you had any ideas?

Mark Malone · ‎06-10-2015

config looks ok and i checked your release there's no specific bugs to match that issue in release notes , have you tried to debug the arp while the issue is occurring to see if the router is sending an arp request for the mac of the printer ?

http://www.cisco.com/c/en/us/td/docs/switches/lan/catalyst3750/software/release/15-0_2_se/release/notes/OL25301.html

Andy White · ‎06-10-2015

Thanks, what debug commands would you suggest?

Mark Malone · ‎06-10-2015

Debug arp so you can see the transactions between mac and ip address , i persume when you move the printer to another port the mac address joins the table but you still have the same ip address does the ip address keep aging in arp or does it stall after you move it ? you definitely do not have any static arp entries in your router for the devices?

Whats your arp/mac timeouts set to default ?

http://www.cisco.com/c/en/us/td/docs/ios/12_2/debug/command/reference/122debug/dbfarap.html

devils_advocate · ‎06-10-2015

Which ports on that switch are the problem devices connected to currently and which ports are you moving them to?

I have noticed the following port, is this actually connected to a Hub?

!
interface FastEthernet0/45
 description Hub for Zebra printers
 switchport access vlan 10
 switchport mode access
 switchport nonegotiate
 switchport voice vlan 62
 switchport port-security maximum 10
 switchport port-security
 spanning-tree portfast
 spanning-tree bpduguard enable
 spanning-tree guard root

It looks like your ports also all have a Voice Vlan configured, I would remove this from non phone connected ports.

Personally I would remove the following commands from the non phone connected ports to see if the issue is resolved:

interface FastEthernet0/8
 description LAN
 switchport access vlan 10
 switchport mode access
 switchport nonegotiate
 switchport voice vlan 62
 spanning-tree portfast
 spanning-tree bpduguard enable
 spanning-tree guard root

jimgrumbles · ‎12-04-2015

Did you ever find a solution for this? We're having an issue with a Ricoh Aficio 2851 with a static IP that won't populate the MAC table on a 2960X but if we move it back to a 3560 or 3750 it comes right back up and is pingable immediately. I configured the interface on the 2960X exactly the same as the 3560 and 3750. I've tried code 15.2(2)E3 and 15.0(2)EX5, both with the same results. Printer only connects at 10Mbps/Full on the 2960X but comes up at 100Mbps/Full on 3750/3560.

jimgrumbles · ‎01-15-2016

This was a bad NIC on the printer.

Printers and Copiers issue on 2960x