diff --git a/evio/broker/__init__.py b/evio/broker/__init__.py
index 9aff81a..a5f3145 100644
--- a/evio/broker/__init__.py
+++ b/evio/broker/__init__.py
@@ -40,18 +40,18 @@ __all__ = [
     "BROKER_LOG_NAME",
     "TINCAN_LOG_NAME",
     "PERFDATA_LOG_NAME",
-    "TINCAN_CHK_INTERVAL",
+    "TC_PRCS_CHK_INTERVAL",
     "MAX_FILE_SIZE",
     "MAX_ARCHIVES",
     "CONSOLE_LEVEL",
     "DEVICE",
-    "EVENT_PERIOD",
-    "CBT_LIFESPAN",
+    "TIMER_EVENT_PERIOD",
+    "CBT_DFLT_TIMEOUT",
     "LINK_SETUP_TIMEOUT",
     "JID_RESOLUTION_TIMEOUT",
-    "CONTROLLER_TIMER_INTERVAL",
-    "CACHE_EXPIRY_INTERVAL",
-    "PRESENCE_INTERVAL",
+    "CM_TIMER_EVENT_INTERVAL",
+    "CACHE_ENTRY_TIMEOUT",
+    "PRESENCE_UPDATE_INTERVAL",
     "BR_NAME_MAX_LENGTH",
     "NAME_PREFIX_EVI",
     "NAME_PREFIX_APP_BR",
@@ -63,13 +63,13 @@ __all__ = [
     "GENEVE_SETUP_TIMEOUT",
     "MIN_SUCCESSORS",
     "MAX_ON_DEMAND_EDGES",
-    "EXCLUSION_BASE_INTERVAL",
+    "PEER_EXCLUSION_INTERVAL",
     "MAX_SUCCESSIVE_FAILS",
     "TRIM_CHECK_INTERVAL",
     "MAX_CONCURRENT_OPS",
     "SUCCESSIVE_FAIL_INCR",
     "SUCCESSIVE_FAIL_DECR",
-    "STALE_INTERVAL",
+    "PEER_CHKIN_TIMEOUT",
     "MAX_HEARTBEATS",
     "perfd",
     "CONFIG",
@@ -89,6 +89,7 @@ __all__ = [
     "introspect",
     "delim_mac_str",
     "statement_false",
+    "TC_REQUEST_TIMEOUT",
 ]
 EVIO_VER_REL: str = f"{EVIO_VER_MJR}.{EVIO_VER_MNR}.{EVIO_VER_REV}.{EVIO_VER_BLD}"
 LOG_DIRECTORY = "/var/log/evio/"
@@ -96,19 +97,11 @@ BROKER_LOG_LEVEL = "INFO"
 LOG_LEVEL = "INFO"
 BROKER_LOG_NAME = "broker.log"
 TINCAN_LOG_NAME = "tincan"
-TINCAN_CHK_INTERVAL: Literal[5] = 5
 PERFDATA_LOG_NAME = "perf.data"
 MAX_FILE_SIZE = 10000000  # 10MB sized log files
 MAX_ARCHIVES = 5
-CONSOLE_LEVEL = None
+CONSOLE_LEVEL = "ERROR"
 DEVICE = "File"
-EVENT_PERIOD: Literal[1] = 1
-CBT_LIFESPAN: Literal[180] = 180
-JID_RESOLUTION_TIMEOUT: Literal[15] = 15
-LINK_SETUP_TIMEOUT: Literal[180] = 180
-CONTROLLER_TIMER_INTERVAL: Literal[30] = 30
-CACHE_EXPIRY_INTERVAL: Literal[60] = 60
-PRESENCE_INTERVAL: Literal[30] = 30
 BR_NAME_MAX_LENGTH: Literal[15] = 15
 NAME_PREFIX_EVI: Literal["evi"] = "evi"
 NAME_PREFIX_APP_BR: Literal["app"] = "app"
@@ -117,17 +110,26 @@ BRIDGE_AUTO_DELETE: Literal[True] = True
 DEFAULT_BRIDGE_PROVIDER: Literal["OVS"] = "OVS"
 DEFAULT_SWITCH_PROTOCOL: Literal["BF"] = "BF"
 SDN_CONTROLLER_PORT: Literal[6633] = 6633
-GENEVE_SETUP_TIMEOUT: Literal[180] = 180
 MIN_SUCCESSORS: Literal[2] = 2
 MAX_ON_DEMAND_EDGES: Literal[3] = 3
-EXCLUSION_BASE_INTERVAL: Literal[60] = 60
 MAX_SUCCESSIVE_FAILS: Literal[4] = 4
-TRIM_CHECK_INTERVAL: Literal[300] = 300
 MAX_CONCURRENT_OPS: Literal[1] = 1
 SUCCESSIVE_FAIL_INCR: Literal[1] = 1
 SUCCESSIVE_FAIL_DECR: Literal[2] = 2
-STALE_INTERVAL = float(2 * 3600)  # 2 hrs
-MAX_HEARTBEATS: Literal[5] = 3
+MAX_HEARTBEATS: Literal[3] = 3
+TIMER_EVENT_PERIOD: Literal[1] = 1
+CM_TIMER_EVENT_INTERVAL: Literal[30] = 30
+PRESENCE_UPDATE_INTERVAL: Literal[30] = 30
+PEER_EXCLUSION_INTERVAL: Literal[60] = 60
+TRIM_CHECK_INTERVAL: Literal[300] = 300
+TC_PRCS_CHK_INTERVAL: Literal[5] = 5  # tincan process checks
+CACHE_ENTRY_TIMEOUT: Literal[60] = 60
+PEER_CHKIN_TIMEOUT: Literal[7200] = 7200  # 2 hrs
+CBT_DFLT_TIMEOUT: Literal[150] = 160
+JID_RESOLUTION_TIMEOUT: Literal[15] = 15
+GENEVE_SETUP_TIMEOUT: Literal[90] = 90
+LINK_SETUP_TIMEOUT: Literal[120] = 130
+TC_REQUEST_TIMEOUT: Literal[30] = 30  # exipry of a req to tincan
 
 perfd = PerformanceData(LogFile=os.path.join(LOG_DIRECTORY, PERFDATA_LOG_NAME))
 
diff --git a/evio/broker/broker.py b/evio/broker/broker.py
index aba0aa9..5e1bd8f 100644
--- a/evio/broker/broker.py
+++ b/evio/broker/broker.py
@@ -42,9 +42,9 @@ from typing import Any
 from . import (
     BROKER_LOG_LEVEL,
     BROKER_LOG_NAME,
+    CM_TIMER_EVENT_INTERVAL,
     CONFIG,
     CONSOLE_LEVEL,
-    CONTROLLER_TIMER_INTERVAL,
     DEVICE,
     EVIO_VER_REL,
     JID_RESOLUTION_TIMEOUT,
@@ -312,7 +312,7 @@ class Broker:
         # get the controller class from the class name
         ctrl_class = getattr(module, ctrl_cls_name)
         timer_interval = self.cfg_controllers[ctrl_cls_name].get(
-            "TimerInterval", CONTROLLER_TIMER_INTERVAL
+            "TimerInterval", CM_TIMER_EVENT_INTERVAL
         )
         nexus = Nexus(self, timer_interval=timer_interval)
         ctrl_config = self._config.get(ctrl_cls_name)
diff --git a/evio/broker/cbt.py b/evio/broker/cbt.py
index 2244ea2..193d87b 100644
--- a/evio/broker/cbt.py
+++ b/evio/broker/cbt.py
@@ -23,7 +23,7 @@ import time
 import uuid
 from typing import Any, Optional
 
-from . import CBT_LIFESPAN, introspect
+from . import CBT_DFLT_TIMEOUT, introspect
 
 
 class CBT:
@@ -120,7 +120,7 @@ class CBT:
                 self.k = v
             else:
                 self.context[k] = v
-        self.lifespan = CBT_LIFESPAN
+        self.lifespan = CBT_DFLT_TIMEOUT
         self.time_created: float = 0.0
         self.time_submited: float = 0.0
         self.time_completed: float = 0.0
diff --git a/evio/broker/nexus.py b/evio/broker/nexus.py
index 7119323..9a672b5 100644
--- a/evio/broker/nexus.py
+++ b/evio/broker/nexus.py
@@ -23,7 +23,7 @@ import queue
 import threading
 import time
 
-from . import CONTROLLER_TIMER_INTERVAL, EVENT_PERIOD
+from . import CM_TIMER_EVENT_INTERVAL, TIMER_EVENT_PERIOD
 from .cbt import CBT
 from .process_proxy import ProxyMsg
 from .timed_transactions import Transaction
@@ -40,7 +40,7 @@ class Nexus:
         self._broker = broker_object  # broker object reference
         self._exit_event = threading.Event()
         self.update_timer_interval(
-            kwargs.get("timer_interval", CONTROLLER_TIMER_INTERVAL)
+            kwargs.get("timer_interval", CM_TIMER_EVENT_INTERVAL)
         )
         self._timer_loop_cnt: int = 1
 
@@ -113,8 +113,8 @@ class Nexus:
 
     def update_timer_interval(self, interval: int):
         self._timer_interval: int = interval
-        if self._timer_interval < EVENT_PERIOD:
-            self._timer_interval = EVENT_PERIOD
+        if self._timer_interval < TIMER_EVENT_PERIOD:
+            self._timer_interval = TIMER_EVENT_PERIOD
 
     def start_controller(self):
         self._cm_thread.start()
diff --git a/evio/broker/timed_transactions.py b/evio/broker/timed_transactions.py
index ceb1cb0..da9c6f0 100644
--- a/evio/broker/timed_transactions.py
+++ b/evio/broker/timed_transactions.py
@@ -3,7 +3,7 @@ import sched
 import threading
 import time
 
-from . import EVENT_PERIOD
+from . import TIMER_EVENT_PERIOD
 
 
 class Transaction:
@@ -25,7 +25,7 @@ class TimedTransactions:
         self._event_thread = threading.Thread(
             target=self._run, name=thread_name, daemon=False
         )
-        self._chk_interval = float(EVENT_PERIOD)
+        self._chk_interval = float(TIMER_EVENT_PERIOD)
         self._sched = sched.scheduler()
 
     def register(self, entry: Transaction):
diff --git a/evio/controllers/bridge_controller.py b/evio/controllers/bridge_controller.py
index b7ca820..60aec30 100644
--- a/evio/controllers/bridge_controller.py
+++ b/evio/controllers/bridge_controller.py
@@ -615,7 +615,7 @@ class BridgeController(ControllerModule):
             self.logger.warning(
                 "A module shutdown error occurred: %s", err, exc_info=True
             )
-        self.logger.info("Controller module terminating")
+        self.logger.info("Controller module terminated")
 
     def req_handler_vis_data(self, cbt: CBT):
         br_data = {}
diff --git a/evio/controllers/geneve_tunnel.py b/evio/controllers/geneve_tunnel.py
index 78bc3e5..7b542c1 100644
--- a/evio/controllers/geneve_tunnel.py
+++ b/evio/controllers/geneve_tunnel.py
@@ -68,7 +68,7 @@ class GeneveTunnel(ControllerModule):
         for tnl in self._tunnels.values():
             self._remove_tunnel(tnl.tap_name)
         self._tunnels.clear()
-        self.logger.info("Controller module terminating")
+        self.logger.info("Controller module terminated")
 
     def _deauth_tnl(self, tnl: Tunnel):
         self._tunnels.pop(tnl.tnlid, None)
diff --git a/evio/controllers/link_manager.py b/evio/controllers/link_manager.py
index 71f477c..359e821 100644
--- a/evio/controllers/link_manager.py
+++ b/evio/controllers/link_manager.py
@@ -70,7 +70,6 @@ class Tunnel:
         self.link = None
         self.peer_mac = None
         self.state = tnl_state
-        self.dataplane = dataplane
 
     def __repr__(self):
         return broker.introspect(self)
@@ -133,7 +132,7 @@ class LinkManager(ControllerModule):
         self.logger.info("Controller module loaded")
 
     def terminate(self):
-        self.logger.info("Controller module terminating")
+        self.logger.info("Controller module terminated")
 
     def abort_handler_tunnel(self, cbt: CBT):
         self.logger.debug("Aborting CBT %s", cbt)
@@ -370,7 +369,7 @@ class LinkManager(ControllerModule):
                     "TapName": self._tunnels[tnlid].tap_name,
                     "MAC": self._tunnels[tnlid].mac,
                     "PeerMac": self._tunnels[tnlid].peer_mac,
-                    "Dataplane": self._tunnels[tnlid].dataplane,
+                    "Dataplane": DATAPLANE_TYPES.Tincan,
                 }
                 self._link_updates_publisher.post_update(param)
             elif lnk_status == TUNNEL_STATES.QUERYING:
@@ -873,6 +872,7 @@ class LinkManager(ControllerModule):
             self.node_id[:7],
             peer_id[:7],
         )
+        tnl.fpr = None
         if not tnl.is_tnl_online():
             self.register_timed_transaction(
                 tnl,
@@ -931,7 +931,8 @@ class LinkManager(ControllerModule):
         lnkid = params["LinkId"]
         tnlid = self.tunnel_id(lnkid)
         peer_id = params["NodeData"]["UID"]
-        self._tunnels[tnlid].link.creation_state = 0xC0
+        tnl = self._tunnels[tnlid]
+        tnl.link.creation_state = 0xC0
         self.logger.debug(
             "Creating link %s to peer %s (4/4 Target)", lnkid[:7], peer_id[:7]
         )
@@ -960,6 +961,7 @@ class LinkManager(ControllerModule):
             self.node_id[:7],
             peer_id[:7],
         )
+        tnl.fpr = None
 
     def _send_local_cas_to_peer(self, cbt: CBT):
         # Create Link: Phase 6 Node A
diff --git a/evio/controllers/overlay_visualizer.py b/evio/controllers/overlay_visualizer.py
index d647a62..50d64ae 100644
--- a/evio/controllers/overlay_visualizer.py
+++ b/evio/controllers/overlay_visualizer.py
@@ -130,4 +130,4 @@ class OverlayVisualizer(ControllerModule):
         self._vis_req_publisher.post_update(None)
 
     def terminate(self):
-        self.logger.info("Controller module terminating")
+        self.logger.info("Controller module terminated")
diff --git a/evio/controllers/signal.py b/evio/controllers/signal.py
index 37650ae..ab0ce57 100644
--- a/evio/controllers/signal.py
+++ b/evio/controllers/signal.py
@@ -39,7 +39,7 @@ from typing import Optional, Tuple, Union
 
 import broker
 import slixmpp
-from broker import CACHE_EXPIRY_INTERVAL, PRESENCE_INTERVAL
+from broker import CACHE_ENTRY_TIMEOUT, PRESENCE_UPDATE_INTERVAL
 from broker.cbt import CBT
 from broker.controller_module import ControllerModule
 from broker.remote_action import RemoteAction
@@ -430,7 +430,7 @@ class XmppCircle:
         self.on_net_fail = kwargs["on_net_fail"]
         self._transmission_queues: dict[str, Queue] = {}
         self.jid_cache: JidCache = JidCache(
-            ovl_config.get("CacheExpiry", CACHE_EXPIRY_INTERVAL)
+            ovl_config.get("CacheExpiry", CACHE_ENTRY_TIMEOUT)
         )
         self.xport: XmppTransport = None
         self._xport_thread = threading.Thread(
@@ -516,15 +516,15 @@ class Signal(ControllerModule):
             self._circles[olid] = xcir
             xcir.start()
             self.register_deferred_call(
-                PRESENCE_INTERVAL * random.randint(1, 5),
+                PRESENCE_UPDATE_INTERVAL * random.randint(1, 5),
                 self.on_exp_presence,
             )
         self.logger.info("Controller module loaded")
 
     def _next_anc_interval(self) -> float:
-        return self.config.get("PresenceInterval", PRESENCE_INTERVAL) * random.randint(
-            20, 50
-        )
+        return self.config.get(
+            "PresenceInterval", PRESENCE_UPDATE_INTERVAL
+        ) * random.randint(20, 50)
 
     def on_exp_presence(self):
         with self._lck:
@@ -559,7 +559,7 @@ class Signal(ControllerModule):
         self._circles[xcir.overlay_id] = xcir
         xcir.start()
         self.register_deferred_call(
-            PRESENCE_INTERVAL * random.randint(1, 5),
+            PRESENCE_UPDATE_INTERVAL * random.randint(1, 5),
             self.on_exp_presence,
         )
         cbt.set_response(None, True)
@@ -727,7 +727,7 @@ class Signal(ControllerModule):
         with self._lck:
             for overlay_id in self._circles:
                 self._circles[overlay_id].terminate()
-        self.logger.info("Controller module terminating")
+        self.logger.info("Controller module terminated")
 
     def abort_handler(self, cbt: CBT):
         rem_act = self._recv_remote_acts_invk_locally.pop(cbt.tag, None)
diff --git a/evio/controllers/tincan_tunnel.py b/evio/controllers/tincan_tunnel.py
index 8b3039f..f79e527 100644
--- a/evio/controllers/tincan_tunnel.py
+++ b/evio/controllers/tincan_tunnel.py
@@ -30,7 +30,7 @@ from copy import deepcopy
 from threading import Event
 
 import broker
-from broker import TINCAN_CHK_INTERVAL
+from broker import TC_PRCS_CHK_INTERVAL
 from broker.cbt import CBT
 from broker.controller_module import ControllerModule
 from broker.process_proxy import ProxyMsg
@@ -84,7 +84,7 @@ class TincanTunnel(ControllerModule):
         self._register_resp_handlers()
         self._register_abort_handlers()
         self._tci_publisher = self.publish_subscription("TCI_TUNNEL_EVENT")
-        self.register_deferred_call(TINCAN_CHK_INTERVAL, self.on_expire_chk_tincan)
+        self.register_deferred_call(TC_PRCS_CHK_INTERVAL, self.on_expire_chk_tincan)
         self.logger.info("Controller module loaded")
 
     def _register_abort_handlers(self):
@@ -374,7 +374,7 @@ class TincanTunnel(ControllerModule):
         self.logger.info("Tincan request expired %s", tag)
         cbt: CBT = self._tnl_cbts.pop(tag, None)
         if cbt and cbt.is_pending:
-            cbt.set_response("Tincan request expired", False)
+            cbt.set_response("The Tincan request expired", False)
             self.complete_cbt(cbt)
 
     def is_tc_req_cmpl(self, tag: int) -> bool:
@@ -393,14 +393,14 @@ class TincanTunnel(ControllerModule):
             return
         if self._tc_proc_tbl:
             self.register_internal_cbt("_TCI_CHK_PROCESS")
-        self.register_deferred_call(TINCAN_CHK_INTERVAL, self.on_expire_chk_tincan)
+        self.register_deferred_call(TC_PRCS_CHK_INTERVAL, self.on_expire_chk_tincan)
 
     def terminate(self):
         self.exit_ev.set()
         for tc_proc in self._tc_proc_tbl.values():
             self._stop_tincan(tc_proc, wt=1.5)
         self.logger.debug("avg tok = %s", self._kill_times[-1] / len(self._kill_times))
-        self.logger.info("Controller module terminating")
+        self.logger.info("Controller module terminated")
 
     def send_control(self, ipc_id: int, ctl: str):
         msg: ProxyMsg = ProxyMsg(ipc_id, payload=ctl.encode("utf-8"))
diff --git a/evio/controllers/topology.py b/evio/controllers/topology.py
index 71564eb..f22e1b6 100644
--- a/evio/controllers/topology.py
+++ b/evio/controllers/topology.py
@@ -32,13 +32,13 @@ from typing import Optional
 
 import broker
 from broker import (  # PEER_DISCOVERY_COALESCE,
-    CBT_LIFESPAN,
-    EXCLUSION_BASE_INTERVAL,
+    CBT_DFLT_TIMEOUT,
     MAX_CONCURRENT_OPS,
     MAX_ON_DEMAND_EDGES,
     MAX_SUCCESSIVE_FAILS,
     MIN_SUCCESSORS,
-    STALE_INTERVAL,
+    PEER_CHKIN_TIMEOUT,
+    PEER_EXCLUSION_INTERVAL,
     SUCCESSIVE_FAIL_DECR,
     SUCCESSIVE_FAIL_INCR,
     TRIM_CHECK_INTERVAL,
@@ -101,7 +101,7 @@ class DiscoveredPeer:
     def exclude(self):
         self.successive_fails += SUCCESSIVE_FAIL_INCR
         self.available_time = (
-            randint(1, 4) * EXCLUSION_BASE_INTERVAL * self.successive_fails
+            randint(1, 4) * PEER_EXCLUSION_INTERVAL * self.successive_fails
         ) + time.time()
         if self.successive_fails >= MAX_SUCCESSIVE_FAILS:
             self.is_banned = True
@@ -120,7 +120,7 @@ class DiscoveredPeer:
 
     @property
     def is_stale(self):
-        return bool(time.time() - self.last_checkin >= STALE_INTERVAL)
+        return bool(time.time() - self.last_checkin >= PEER_CHKIN_TIMEOUT)
 
     @property
     def is_available(self):
@@ -128,7 +128,7 @@ class DiscoveredPeer:
             (not self.is_banned)  # successive_fails < max_successive_fails
             # the falloff wait period is over
             and (time.time() >= self.available_time)
-            and (time.time() - self.last_checkin < STALE_INTERVAL - 600)
+            and (time.time() - self.last_checkin < PEER_CHKIN_TIMEOUT - 600)
         )  # 10 mins before a node is stale
 
 
@@ -318,7 +318,7 @@ class Topology(ControllerModule):
         }
 
     def terminate(self):
-        self.logger.info("Controller module terminating")
+        self.logger.info("Controller module terminated")
 
     def on_timer_event(self):
         if not self._is_topo_update_pending:
@@ -557,7 +557,7 @@ class Topology(ControllerModule):
                 (ce, olid),
                 self._is_connedge_connected,
                 self._on_connedge_timeout,
-                CBT_LIFESPAN,
+                CBT_DFLT_TIMEOUT,
             )
             self._authorize_incoming_tunnel(
                 net_ovl,
diff --git a/evio/controllers/usage_report.py b/evio/controllers/usage_report.py
index 2850fda..436b2c8 100644
--- a/evio/controllers/usage_report.py
+++ b/evio/controllers/usage_report.py
@@ -65,7 +65,7 @@ class UsageReport(ControllerModule):
         self.register_cbt("Topology", "TOP_QUERY_KNOWN_PEERS", None)
 
     def terminate(self):
-        self.logger.info("Controller module terminating")
+        self.logger.info("Controller module terminated")
 
     def create_report(self, data):
         self._report["ReportId"] = self._report_id