Do all frames go through the root bridge? Meaning, if a frame were to hit an upstream switch that had an unblocked trunk to the destination switch, would that frame need to still traverse the root switch or would that frame go direct? Thanks.
Re: STP - Do all frames go through the root bridge
Short answer is no they don't. A lot depends on whether the frames are destined for another device within the same vlan. If they are in a different vlan then the packets have to be sent to the HSRP active gateway which is quite often also the root bridge - doesn't have to be but often is.
If a switch knows that the destination for a mac-address is on a another switch and it has a connection to that switch which is not blocking it will forward that frame down the link.
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.