The scenario is, we extend some of our clients vlans from our core to the clients edge device through some service providers. This is done by having a interconnect and by running Q and Q trunking which extends our vlan to the place which we can?t reach.
At times while troubleshooting and liaising with other engineers (service providers) I often hear about mapping our vlan ID to some other vlan ID in their network. How its working ??
Can any help me to understand what is mapping and how its working. It will be very helpful if some one posts some link.