2.1.a Implement and troubleshoot switch administration

2.1.a [iii] L2 MTU

There are 3 types of MTU that can be configured on a switch:
● Layer-2 MTU that affects 10 and 100 Mbps interfaces of a switch. Configured by system MTU {bytes} command in global config mode

● Layer-2 MTU that affects 1000 Mbps and higher speed interfaces of a switch. Configured by system MTU jumbo {bytes} command in global configuration mode

● Layer-3 MTU that affects SVIs and routed interfaces of a switch with IP addresses on them and originating or transit IP traffic that uses these interfaces as GW for routing between networks. Configured by system mtu routing {bytes} command in global config mode

Adam, Paul (2014-07-12). All-in-One CCIE V5 Written Exam Guide (Kindle Locations 1513-1521).  . Kindle Edition.