: Represents Cisco IOS Release 15.7(3) , a stable long-term support release branch preferred for core routing logic.
: This image is intended solely for use in virtual lab environments like EVE-NG and GNS3 for learning and testing. It is never intended for, nor should it be used in, a production network. These are internal Cisco images used for software emulation.
Virtual Private LAN Service () and Any Transport over MPLS ( AToM ).
: Phase 1, 2, and 3 networks combined with Next Hop Resolution Protocol (NHRP).