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diff --git a/qpid/cpp/src/qpid/ha/Membership.h b/qpid/cpp/src/qpid/ha/Membership.h
new file mode 100644
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+++ b/qpid/cpp/src/qpid/ha/Membership.h
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+#ifndef QPID_HA_MEMBERSHIP_H
+#define QPID_HA_MEMBERSHIP_H
+
+/*
+ *
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you 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.
+ *
+ */
+
+#include "BrokerInfo.h"
+#include "types.h"
+#include "qpid/log/Statement.h"
+#include "qpid/sys/Mutex.h"
+#include "qpid/sys/Time.h"
+#include "qpid/types/Variant.h"
+#include <boost/function.hpp>
+#include <set>
+#include <vector>
+#include <iosfwd>
+
+namespace qmf { namespace org { namespace apache { namespace qpid { namespace ha {
+class HaBroker;
+}}}}}
+
+namespace qpid {
+
+namespace broker {
+class Broker;
+}
+
+namespace types {
+class Uuid;
+}
+
+namespace ha {
+class HaBroker;
+
+/**
+ * Keep track of the brokers in the membership.
+ * Send management when events on membership changes.
+ * THREAD SAFE
+ */
+class Membership
+{
+  public:
+    Membership(const BrokerInfo& info, HaBroker&);
+
+    void setMgmtObject(boost::shared_ptr<qmf::org::apache::qpid::ha::HaBroker>);
+
+    void clear();               ///< Clear all but self.
+    void add(const BrokerInfo& b);
+    void remove(const types::Uuid& id);
+    bool contains(const types::Uuid& id);
+
+    /** Return IDs of all READY backups other than self */
+    BrokerInfo::Set otherBackups() const;
+
+    /** Return IDs of all brokers */
+    BrokerInfo::Set getBrokers() const;
+
+    void assign(const types::Variant::List&);
+    types::Variant::List asList() const;
+
+    bool get(const types::Uuid& id, BrokerInfo& result) const;
+
+    BrokerInfo getSelf() const;
+    BrokerStatus getStatus() const;
+    void setStatus(BrokerStatus s);
+
+    void setSelfAddress(const Address&);
+
+  private:
+    void setPrefix();
+    void update(bool log, sys::Mutex::ScopedLock&);
+    BrokerStatus getStatus(sys::Mutex::ScopedLock&) const;
+    types::Variant::List asList(sys::Mutex::ScopedLock&) const;
+
+    mutable sys::Mutex lock;
+    HaBroker& haBroker;
+    boost::shared_ptr<qmf::org::apache::qpid::ha::HaBroker> mgmtObject;
+    const types::Uuid self;
+    BrokerInfo::Map brokers;
+    BrokerStatus oldStatus;
+};
+
+}} // namespace qpid::ha
+
+#endif  /*!QPID_HA_MEMBERSHIP_H*/