Greg has been working with multicast standards and network deployments for over 20 years: in the IETF, in R&E networks as an operator, then with Cisco, Juniper, Procket, then back at Cisco. He has given numerous workshops at NANOG, APRICOT, RIPE, AFNOG, SANOG, AIT, as well as directly with customer engineers. As a Distinguished Engineer at Cisco he directed several advance development projects. He currently co-chairs the MBONED and BIER working groups in the IETF. Greg retired from Cisco in 2020, and is now working part-time back on the Route Views project at NSRC/UofO where his Internet adventure began.