diff --git a/g2/cpel.h b/g2/cpel.h
new file mode 100644
index 0000000..73e4aea
--- /dev/null
+++ b/g2/cpel.h
@@ -0,0 +1,83 @@
+/* 
+ *------------------------------------------------------------------
+ * Copyright (c) 2005-2016 Cisco and/or its affiliates.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at:
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef _CPEL_H_
+#define _CPEL_H_ 1
+
+typedef struct cpel_file_header_ {
+    unsigned char endian_version;
+    unsigned char pad;
+    unsigned short nsections;
+    unsigned file_date;
+} cpel_file_header_t;
+
+#define CPEL_FILE_LITTLE_ENDIAN	0x80
+#define CPEL_FILE_VERSION       0x01
+#define CPEL_FILE_VERSION_MASK  0x7F
+
+typedef struct cpel_section_header_ {
+    unsigned int section_type;
+    unsigned int data_length;        /* does NOT include type and itself */
+} cpel_section_header_t;
+
+#define CPEL_SECTION_STRTAB	1
+/* string at offset 0 is the name of the table */
+
+#define CPEL_SECTION_SYMTAB     2
+#define CPEL_SECTION_EVTDEF     3
+
+typedef struct event_definition_section_header_ {
+    char string_table_name[64];
+    unsigned int number_of_event_definitions;
+} event_definition_section_header_t;
+
+typedef struct event_definition_ {
+    unsigned int event;
+    unsigned int event_format;
+    unsigned int datum_format;
+} event_definition_t;
+
+#define CPEL_SECTION_TRACKDEF   4
+
+typedef struct track_definition_section_header_ {
+    char string_table_name[64];
+    unsigned int number_of_track_definitions;
+} track_definition_section_header_t;
+
+typedef struct track_definition_ {
+    unsigned int track;
+    unsigned int track_format;
+} track_definition_t;
+
+#define CPEL_SECTION_EVENT      5
+
+typedef struct event_section_header_ {
+    char string_table_name[64];
+    unsigned int number_of_events;
+    unsigned int clock_ticks_per_second;
+} event_section_header_t;
+
+typedef struct event_entry_ {
+    unsigned int time[2];
+    unsigned int track;
+    unsigned int event_code;
+    unsigned int event_datum;
+} event_entry_t;
+
+#define CPEL_NUM_SECTION_TYPES 5
+
+#endif /* _CPEL_H_ */
+