Hacker News new | ask | show | jobs
by ra1n85 2306 days ago
1500 bytes is the MTU of IP, in most cases. It often excludes the Ethernet header, which is 14 bytes excluding the FCS, preamble, IFG, and any VLANs.

If have a 1500 byte MTU for IP, then we need at least a 1514 byte MTU for IP + Ethernet. We often call the > 1514B MTU the "interface MTU". It's unnecessarily confusing.