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diff --git a/src/ceph/src/msg/xio/XioPortal.cc b/src/ceph/src/msg/xio/XioPortal.cc
new file mode 100644
index 0000000..e2379fb
--- /dev/null
+++ b/src/ceph/src/msg/xio/XioPortal.cc
@@ -0,0 +1,98 @@
+// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
+// vim: ts=8 sw=2 smarttab
+/*
+ * Ceph - scalable distributed file system
+ *
+ * Copyright (C) 2013 CohortFS, LLC
+ *
+ * This is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License version 2.1, as published by the Free Software
+ * Foundation.  See file COPYING.
+ *
+ */
+
+#include "XioPortal.h"
+#include <stdio.h>
+
+#define dout_subsys ceph_subsys_xio
+
+int XioPortal::bind(struct xio_session_ops *ops, const string &base_uri,
+		    uint16_t port, uint16_t *assigned_port)
+{
+  // format uri
+  char buf[40];
+  xio_uri = base_uri;
+  xio_uri += ":";
+  sprintf(buf, "%d", port);
+  xio_uri += buf;
+
+  uint16_t assigned;
+  server = xio_bind(ctx, ops, xio_uri.c_str(), &assigned, 0, msgr);
+  if (server == NULL)
+    return xio_errno();
+
+  // update uri if port changed
+  if (port != assigned) {
+    xio_uri = base_uri;
+    xio_uri += ":";
+    sprintf(buf, "%d", assigned);
+    xio_uri += buf;
+  }
+
+  portal_id = const_cast<char*>(xio_uri.c_str());
+  if (assigned_port)
+    *assigned_port = assigned;
+  ldout(msgr->cct,20) << "xio_bind: portal " << xio_uri
+    << " returned server " << server << dendl;
+  return 0;
+}
+
+int XioPortals::bind(struct xio_session_ops *ops, const string& base_uri,
+		     uint16_t port, uint16_t *port0)
+{
+  /* a server needs at least 1 portal */
+  if (n < 1)
+    return EINVAL;
+  Messenger *msgr = portals[0]->msgr;
+  portals.resize(n);
+
+  uint16_t port_min = msgr->cct->_conf->ms_bind_port_min;
+  const uint16_t port_max = msgr->cct->_conf->ms_bind_port_max;
+
+  /* bind the portals */
+  for (size_t i = 0; i < portals.size(); i++) {
+    uint16_t result_port;
+    if (port != 0) {
+      // bind directly to the given port
+      int r = portals[i]->bind(ops, base_uri, port, &result_port);
+      if (r != 0)
+        return -r;
+    } else {
+      int r = EADDRINUSE;
+      // try ports within the configured range
+      for (; port_min <= port_max; port_min++) {
+        r = portals[i]->bind(ops, base_uri, port_min, &result_port);
+        if (r == 0) {
+          port_min++;
+          break;
+        }
+      }
+      if (r != 0) {
+        lderr(msgr->cct) << "portal.bind unable to bind to " << base_uri
+            << " on any port in range " << msgr->cct->_conf->ms_bind_port_min
+            << "-" << port_max << ": " << xio_strerror(r) << dendl;
+        return -r;
+      }
+    }
+
+    ldout(msgr->cct,5) << "xp::bind: portal " << i << " bind OK: "
+      << portals[i]->xio_uri << dendl;
+
+    if (i == 0 && port0 != NULL)
+      *port0 = result_port;
+    port = 0; // use port 0 for all subsequent portals
+  }
+
+  return 0;
+}