I got some technical issue in my 802.1Q tunneling lab, please advice if you know it....thanks
- To isolate customer VLAN with provider VLAN (CoreSW01, CoreSW02, and CoreSW03)
- To save VLAN used by customers
- By implementing 802.1Q tunneling, customer have their own VLAN
- Understand 802.1Q tunneling require additional 4bytes of vlan hearder, if I increase systems mtu to 1504byte, does it impact to standard packet? I try to show interface on "Non-802.1Q tunneling" interface and found they are also using 1504. Please advice..
I got a problem to setting up 802.1Q Tunneling, If I remove the CoreSW02, everything are working fine, but when i put back the CoreSW02, then i will loss the connection between SwitchA01 and SwitchA02.
Please find the network diagram and config in the attached PDF file.
vlan 50 is needed on all switches in the middle because frames travel on the L2 SP network portion as double tagged with external tag = vlan 50.
you will see your setup working when you will add vlan 50 to core2 switch.
core switches don't need to know about the vlans used on the customer side that are the internal tags.
it is also important to be sure that vlan 50 is never the native vlan on a trunk to avoid to expose the internal tags.
As an alternative way you can enable native vlan tagging everywhere on SP switches.
note on terminology: the external vlan is called the customer vlan-id that is each customer gets one or more vlan-ids.
Hope to help
Does VLAN 50 exist on CoreSW02 ?