Any network simulators to test openbgpd?

Hi all, I'm looking for any freely available or commercial network simulators or emulators to test Openbgpd by using any of them. And I would also like to know on what other poplar platforms/operating systems, openbgpd is being used in the current market or can be used. As per the following

Openbgpd emulation on GNS3

Hi guys, I'm trying to emulate the Openbsd's Openbgpd on GNS3. Here is the topology for same: [image: Inline image 2] *My-bgp-router: 10.0.0./8 * *ISP1: 20.0.0./8 * *ISP2: 30.0.0./8 * *On the ISP machines I'm unable to recieve any