HAs anyone seen a problem when connecting a catalyst 4006 to a 3com corebuilder , when both ends are set to 100Meg Full duplex and are showing connected, I occasionally get the error message "%CDP-4-DUPLEXMISMATCH:Full/half duplex mismatch detected on port 3/33"
The mismatch was caused by Switch port defaulting to half duplex because it sensed its Link Partner was no longer performing auto-negotiation.It is important to note that this message is created by the Cisco Discovery Protocol (CDP), not the 802.3 auto-negotiation protocol. CDP can report problems it discovers but it typically doesn't automatically fix them. Rememnber that CDP is a Cisco propietary protocol not supported by 3Com switches.
I had the same message some time ago. Cisco devices exchange some of their parameters via CDP. Cisco switches analyze the messages and do not forward them to other ports. Other brands ( eg your 3C Corebuilder ) do not understand these CDP messages and forward them to the other ports of the switch.
The CDP message your cat 4006 receives, comes from a different cisco device that is behind the 3com switch. The duplex parameters reported by CDP not match. If they are correct on your 3C switch, there is no problem.
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.