A customer can have two different offices located in a state. What happens in dot1q tunnel as when the traffic from the customers network hits the ISP switch interface it adds a Vlan ID to the customer traffic. Now the customer might be running 5 different vlans, they all will be tagged to only a single vlan as the traffic hits the ISP switch. The same tagged Vlan will be used to carry the customer's traffic across the ISP network. On the exit interface of the ISP's exit switch, the same vlan TAG will be mapped to all the vlans for which the traffic was carried over the ISP network.
This is basically used to minimize the number of vlan to carry the customers traffic across the ISP network.
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.