Is setting the 'mpls mtu' sufficient for increasing the MTU size for tagged packets or do I need to modify the MTU on the master interface also ? We are using trunking (dot1q) as well.
Also, once I've set the mpls MTU, will I need to go to all the ethernet switches and configure jumbo frame support ?
What the max MTU size I should set ?
Thanks for any help.
Because of the penultimate hop popping behavior the IGP lable would most likely be an implicit null (unless you change the default behavior) leaving you with only your service label (assuming that you are doing MPLS VPN).