diff --git a/command/payload_cmds.hpp b/command/payload_cmds.hpp
new file mode 100644
index 0000000..ed6ca92
--- /dev/null
+++ b/command/payload_cmds.hpp
@@ -0,0 +1,116 @@
+#pragma once
+
+#include <vector>
+#include "message_handler.hpp"
+
+namespace sol
+{
+
+namespace command
+{
+
+constexpr uint8_t IPMI_CC_PAYLOAD_ALREADY_ACTIVE = 0x80;
+constexpr uint8_t IPMI_CC_PAYLOAD_TYPE_DISABLED = 0x81;
+constexpr uint8_t IPMI_CC_PAYLOAD_ACTIVATION_LIMIT = 0x82;
+constexpr uint8_t IPMI_CC_PAYLOAD_WITH_ENCRYPTION = 0x83;
+constexpr uint8_t IPMI_CC_PAYLOAD_WITHOUT_ENCRYPTION = 0x84;
+
+/** @struct ActivatePayloadRequest
+ *
+ *  IPMI payload for Activate Payload command request.
+ */
+struct ActivatePayloadRequest
+{
+#if BYTE_ORDER == LITTLE_ENDIAN
+    uint8_t payloadType : 6;        //!< Payload type.
+    uint8_t reserved1 : 2;          //!< Reserved.
+#endif
+
+#if BYTE_ORDER == BIG_ENDIAN
+    uint8_t reserved1 : 2;          //!< Payload type.
+    uint8_t payloadType : 6;        //!< Payload type.
+#endif
+
+#if BYTE_ORDER == LITTLE_ENDIAN
+    uint8_t payloadInstance : 4;    //!< Payload instance.
+    uint8_t reserved2 : 4;          //!< Reserved.
+#endif
+
+#if BYTE_ORDER == BIG_ENDIAN
+    uint8_t reserved2 : 4;          //!< Reserved.
+    uint8_t payloadInstance : 4;    //!< Payload instance.
+#endif
+
+    /** @brief The following Auxiliary Request Data applies only for payload
+     *         SOL only.
+     */
+#if BYTE_ORDER == LITTLE_ENDIAN
+    uint8_t reserved4 : 1;  //!< Reserved.
+    uint8_t handshake : 1;  //!< SOL startup handshake.
+    uint8_t alert : 2;      //!< Shared serial alert behavior.
+    uint8_t reserved3 : 1;  //!< Reserved.
+    uint8_t testMode : 1;   //!< Test mode.
+    uint8_t auth : 1;       //!< If true, activate payload with authentication.
+    uint8_t encryption : 1; //!< If true, activate payload with encryption.
+#endif
+
+#if BYTE_ORDER == BIG_ENDIAN
+    uint8_t encryption : 1; //!< If true, activate payload with encryption.
+    uint8_t auth : 1;       //!< If true, activate payload with authentication.
+    uint8_t testMode : 1;   //!< Test mode.
+    uint8_t reserved3 : 1;  //!< Reserved.
+    uint8_t alert : 2;      //!< Shared serial alert behavior.
+    uint8_t handshake : 1;  //!< SOL startup handshake.
+    uint8_t reserved4 : 1;  //!< Reserved.
+#endif
+
+    uint8_t reserved5;      //!< Reserved.
+    uint8_t reserved6;      //!< Reserved.
+    uint8_t reserved7;      //!< Reserved.
+} __attribute__((packed));
+
+/** @struct ActivatePayloadResponse
+ *
+ *  IPMI payload for Activate Payload command response.
+ */
+struct ActivatePayloadResponse
+{
+    uint8_t completionCode;     //!< Completion code.
+    uint8_t reserved1;          //!< Reserved.
+    uint8_t reserved2;          //!< Reserved.
+    uint8_t reserved3;          //!< Reserved.
+
+    // Test Mode
+#if BYTE_ORDER == LITTLE_ENDIAN
+    uint8_t testMode : 1;       //!< Test mode.
+    uint8_t reserved4 : 7;      //!< Reserved.
+#endif
+
+#if BYTE_ORDER == BIG_ENDIAN
+    uint8_t reserved4 : 7;      //!< Reserved.
+    uint8_t testMode : 1;       //!< Test mode.
+#endif
+
+    uint16_t inPayloadSize;     //!< Inbound payload size
+    uint16_t outPayloadSize;    //!< Outbound payload size.
+    uint16_t portNum;           //!< Payload UDP port number.
+    uint16_t vlanNum;           //!< Payload VLAN number.
+} __attribute__((packed));
+
+/** @brief Activate Payload Command.
+ *
+ *  This command is used for activating and deactivating a payload type under a
+ *  given IPMI session. The UDP Port number for SOL is the same as the port that
+ *  was used to establish the IPMI session.
+ *
+ *  @param[in] inPayload - Request data for the command.
+ *  @param[in] handler - Reference to the message handler.
+ *
+ *  @return Response data for the command
+ */
+std::vector<uint8_t> activatePayload(std::vector<uint8_t>& inPayload,
+                                     const message::Handler& handler);
+
+} // namespace command
+
+} // namespace sol