I don't think that traffic from VLAN50 will get from Switch A to Switch C.
With the switches in transparent mode, each switch only knows about its own VLAN's. And even though you have a VLAN50 on Switch A and a VLAN50 on Switch B, these are not the same VLAN.
What you would need to do is to have all your switches as VTP Servers or 1 switch as a VTP server and the other 2 switches as clients. In this configuration all three switches would know about VLAN50 and even if switch B had no hosts in VLAN50 attached to it, it would still pass traffic for VLAN50 from switch A over the trunk to switch B.
I would be interested to see switch B show spanning-tree vlan 50. If it has a spanning-tree for that VLAN, we must ask ourselves why. If it has no spanning tree for that VLAN, then that would imply that a transparent switch could cause a loop.
Did you try show vlan on switch B, just to be 100% sure there was no VLAN 50 there?
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.