I86bi — Linuxl3-adventerprisek9-m2 157 3 May 2018.bin
: AdvEnterpriseK9 (Advanced Enterprise Services), which includes high-end routing protocols and security features.
The "i86bi" prefix confirms it is compiled for x86 architecture (64-bit). Cisco Systems CLI commands i86bi linuxl3-adventerprisek9-m2 157 3 may 2018.bin
Full support for OSPF, EIGRP, BGP, and IS-IS. : AdvEnterpriseK9 (Advanced Enterprise Services)
Keep it. Use it. Just remember it cannot do switching or modern SD-WAN. For Layer 2 labs, you will need an IOU (L2) image or vIOS-L2. Quality of Service (QoS)
These images (also known as IOU - IOS on UNIX) are commonly used in virtual lab environments because they are much more resource-efficient than traditional virtual machines like Cisco IOSv Supported Platforms : Frequently used in Requirements They require a valid IOU license file) to run in these emulators.
MPLS, RSVP, Quality of Service (QoS), and Multicast.