I'm just wondering, the previous network administrator here has setup RSTP, and has devided half the ports (odds) and the other half (evens) into seperate costs. So odd ports get cost 19 and evens cost 100.
The ports all connect to voip phones (which have internal switching) and PCs (which are portfast enabled).
Why has this been done, I can't think of a reason at all.
The PCs with portfast enabled are just useless because they dont participate in cost decisions....
I don't see any reason for changing port cost on interfaces connecting to phones and PC. However you should always enable portfast on all your user interfaces. If your ports are all fast Ethernet, the cost should be 19 for all.
Port not being configured with port fast - will send TCN BPDU on interface flap. Possibly assigning different corts old admin split ports in two group to locate the group on which port is flapping from the root bridge which will receive TCN.
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.