Shared memory logs for client-level analysis

Shared memory logging smlog is available by default so you can retrieve client activity on a per subscriber basis. Additional filters enables you to retrieve logs according to a variety of parameters, including the client identifier, client DUID, interface name, IP address, session ID, subnet, and VLAN. A complete list of supported filters is available at the [show shmlog entries logname all] hierarchy level and a complete list of flags is available at the [show shmlog entries logname all flag-name] hierarchy level.