hello this the instruction and Steps by Steps video to install JunOS 10.1 in Qemu for GNS3 for Juniper router simulation
Download the required software
1. JunOS 10.X (use Torrents may OS Image are available from there i also got)
Link
2. Download FreeBSD 4.11 as base OS for Router
Download
3. Download Qemu 0.11.0 from GNS3 web site
Download
4. Need to Software to create CD ISO image. ex:
Deep Burner
Time to Start