diff --git a/pimd/pim_assert.h b/pimd/pim_assert.h
new file mode 100644
index 0000000..6a8594c
--- /dev/null
+++ b/pimd/pim_assert.h
@@ -0,0 +1,75 @@
+/*
+  PIM for Quagga
+  Copyright (C) 2008  Everton da Silva Marques
+
+  This program is free software; you can redistribute it and/or modify
+  it under the terms of the GNU General Public License as published by
+  the Free Software Foundation; either version 2 of the License, or
+  (at your option) any later version.
+
+  This program is distributed in the hope that it will be useful, but
+  WITHOUT ANY WARRANTY; without even the implied warranty of
+  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+  General Public License for more details.
+  
+  You should have received a copy of the GNU General Public License
+  along with this program; see the file COPYING; if not, write to the
+  Free Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston,
+  MA 02110-1301 USA
+  
+  $QuaggaId: $Format:%an, %ai, %h$ $
+*/
+
+#ifndef PIM_ASSERT_H
+#define PIM_ASSERT_H
+
+#include <zebra.h>
+
+#include "if.h"
+
+#include "pim_neighbor.h"
+#include "pim_ifchannel.h"
+
+/*
+  RFC 4601: 4.11.  Timer Values
+
+  Note that for historical reasons, the Assert message lacks a
+  Holdtime field.  Thus, changing the Assert Time from the default
+  value is not recommended.
+ */
+#define PIM_ASSERT_OVERRIDE_INTERVAL (3)   /* seconds */
+#define PIM_ASSERT_TIME              (180) /* seconds */
+
+#define PIM_ASSERT_METRIC_PREFERENCE_MAX (0xFFFFFFFF)
+#define PIM_ASSERT_ROUTE_METRIC_MAX      (0xFFFFFFFF)
+
+void pim_ifassert_winner_set(struct pim_ifchannel     *ch,
+			     enum pim_ifassert_state   new_state,
+			     struct in_addr            winner,
+			     struct pim_assert_metric  winner_metric);
+
+int pim_assert_recv(struct interface *ifp,
+		    struct pim_neighbor *neigh,
+		    struct in_addr src_addr,
+		    char *buf, int buf_size);
+
+int pim_assert_metric_better(const struct pim_assert_metric *m1,
+			     const struct pim_assert_metric *m2);
+int pim_assert_metric_match(const struct pim_assert_metric *m1,
+			    const struct pim_assert_metric *m2);
+
+int pim_assert_build_msg(char *pim_msg, int buf_size,
+			 struct interface *ifp,
+			 struct in_addr group_addr,
+			 struct in_addr source_addr,
+			 uint32_t metric_preference,
+			 uint32_t route_metric,
+			 uint32_t rpt_bit_flag);
+
+int pim_assert_send(struct pim_ifchannel *ch);
+
+int assert_action_a1(struct pim_ifchannel *ch);
+void assert_action_a4(struct pim_ifchannel *ch);
+void assert_action_a5(struct pim_ifchannel *ch);
+
+#endif /* PIM_ASSERT_H */