Cisco Systems Cisco Systems Cisco Systems Cisco Systems Cisco Systems Cisco Systems Comcast SoftBank Bloomberg LP Bell Canada LinkedIn Proximus Huawei Drexel University This document defines building blocks that can be used for Operations, Administration, and Maintenance (OAM) in Segment Routing Networks with IPv6 Dataplane (SRv6). The document also describes some SRv6 OAM mechanisms that can be realized using these building blocks.