we're experiencing a problem which happen randomly with Cat3750...
The CPU usage increase over 60% for a period of time and we've not yet defined the exact cause...after that the DHCP Snooping Database on the switch start to release the IP Address..after some hours the Database is empty ad we should reload the switch...
The switches are configured for DHCP Snooping with Port-Security for MAC Address, IP Source Guard and DAI...with Proxy-ARP active
Anyone has already experienced something similar???
I've seen a docs about Cat3750
"Catalyst 3750 Series Switches High CPU Utilization Troubleshooting" and one chapter states ==>>> High CPU Due to Excessive ARP Request ...
DHCP snooping is a DHCP security feature that provides network security by filtering untreated DHCP messages and by building and maintaining a DHCP snooping binding database, also referred to as a DHCP snooping binding table.
This is actually a pretty cool feature, i didn't even know it existed until I was looking for a solution to advertise a subnet (prefix in BGP talk), only if a certain condition existed. This is exactly what conditional advertisements does
j ai une question j ai achete un routeur cisco 887VA-k9 , je le configuré avec la configuration ci- dessous
si je le lier avec mon pc portable sur l un de ses ports directement ça marche toute est bien ( la connexion internet + m...
Attached policy provides CLI access to the Cisco 4G router over text messaging. Two files are in the attached .tar file:
2. PDF with instructions on how to load and use the .tcl file.