Forum Discussion
Hi Thiyagu,
As far I know the MTU is 1500 bytes. whether the length of the packet 1618 bytes on wire will create any issue.
Its absolute normal that WireShark captures ethernet frames bigger than your maximum ethernet MTU.
The reason is, that the MTU defines just the maximum payload size of an Ethernet Frame without including any ethernet headers/trailers and optionally the overhead of underlying tunnel/trunking protocols (e.g 802.1Q Tags, MPLS, IS-IS, etc.).
Are you absolute sure about having a 1618byte packet size and not just 1518bytes? I'm asking because it would mean that you're running multiple tunnel/trunking protocols at the same time or that you've deployed jumbo frames (aka. MTU larger than 1500). A packet size of exactly 1518 bytes would be the minimum size to transfer a full MTU.
Cheers, Kai