11-14-2024 09:22 AM
We recently installed new Cisco 9300 switches and randomly, users have complained that their Avaya phones restart and PCs go off and on. I started running the show logs and noticed the following:
049632: Nov 14 13:11:06: %PM-4-ERR_RECOVER: Attempting to recover from arp-inspection err-disable state on Gi1/0/33
049633: Nov 14 13:11:08: %ILPOWER-5-DETECT: Interface Gi1/0/33: Power Device detected: IEEE PD
049634: Nov 14 13:11:09: %ILPOWER-5-POWER_GRANTED: Interface Gi1/0/33: Power granted
049635: Nov 14 13:11:16: %SW_DAI-4-DHCP_SNOOPING_DENY: 1 Invalid ARPs (Req) on Gi1/0/33, vlan 2.([c85a.cf76.d1e1/169.254.223.207/0000.0000.0000/169.254.223.207/13:11:15 UTC Thu Nov 14 2024])
049636: Nov 14 13:11:17: %LINK-3-UPDOWN: Interface GigabitEthernet1/0/33, changed state to up
049637: Nov 14 13:11:18: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet1/0/33, changed state to up
interface GigabitEthernet1/0/33
switchport access vlan 2
switchport mode access
switchport block unicast
switchport voice vlan 6
switchport port-security maximum 2
switchport port-security mac-address sticky
switchport port-security mac-address sticky c85a.cf76.d1e1
switchport port-security mac-address sticky 001b.4f5d.d2c7 vlan voice
switchport port-security
spanning-tree portfast
spanning-tree bpduguard enable
spanning-tree guard root
We have opened up a case and thru some troubleshooting the reps suggested a recommended a different OS ver.
Any suggestions
Jose A cedillo
11-14-2024 09:31 AM
1- check if PC Mac add to correct vlan (vlan2)
2- connect pc directly do you see same error?
3- check dhcp snooping binding' it have correct mac of iphone and pc with correct IP?
Mostly this issue of pc it have bad programs start l2 secuirty attack.
MHM
11-14-2024 11:58 AM
check mac address any where learning ?
check some guide lines :
or you may try as suggested different IOS XE code if that is bug on that version running.
11-14-2024 12:34 PM
Thank You
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