INE WBs are based on CSR1000v image, which is free from cisco. you would need ESX server from vmware; some others have use CSR image on vmware workstation if u have high-end PC.
Other lab set-ups are based on IOU and/or GNS3. Cisco has CCIE Lab builder, and VIRL for labbing
CCIE RS lab is based on IOS 15.3.T and 15.0 SE for switching
some more info is on CLN:
"Candidates who want to prepare using their own hardware-based labs
can use the following equipment and Cisco IOS Software Releases:
- Cisco ISR 2900 Series routers running IOS version 15.3T Universal Software release
- Catalyst 3560X Series switches running IOS version 15.0SE Universal (IP Services) Software release
Any other hardware platform that can run equivalent Cisco IOS Software Release 15.3T or 15.0SE may be used as well.
that older equipment platforms and Cisco IOS Software Releases may be
used to learn and practice a significant portion of the exam curriculum."