Bgp: move the BGP timers from the config XML to module parameters

avarga · avarga · commit 7cf0a4fb75ab · 2026-06-25T16:56:28.000+02:00
The BGP timers were configured in a single global <TimerParams> element in the bgpConfig XML, applied to every router. They are per-router behavior knobs, not topology, so move them to Bgp module parameters: connectRetryTime (default 120s), holdTime (180s), keepAliveTime (60s) and startDelay (1s) -- all @Unit(s) and overridable from the ini (e.g. **.bgp.holdTime = 90s), consistent with the existing startupTime / ExternalPeerStartDelayOffset parameters. BgpConfigReader now reads the timers from the module parameters and rejects a <TimerParams> element with an informative error that explains how to convert it to module parameters (including the element's source location). <TimerParams> is removed from every BGPConfig*.xml under examples/bgpv4 and tutorials/bgp; each example/tutorial sets the equivalent parameters in its omnetpp.ini where they differ from the new defaults (holdTime=120s in BgpAndOspf, keepAliveTime=680s in BgpOpen, and the various startDelay values). The BGP.xsd schema and the BGP section of the User Guide are updated as well. The timer values are unchanged, so all bgpv4 and tutorials/bgp fingerprints stay byte-identical (verified). The timers are intentionally NOT added to the IBgp moduleinterface, matching how the other Bgp behavior parameters (ebgpMultihop, connectedCheck, ExternalPeerStartDelayOffset) are kept off the interface.
diff --git a/doc/schemas/BGP.xsd b/doc/schemas/BGP.xsd
@@ -64,17 +64,6 @@
   </xsd:complexType>
 </xsd:simpleType>
 
-<xsd:element name="TimerParams">
-  <xsd:complexType>
-    <xsd:sequence>
-      <xsd:element name="connectRetryTime" type="xsd:positiveInteger" default="120"/>
-      <xsd:element name="holdTime" type="xsd:positiveInteger" default="180"/>
-      <xsd:element name="keepAliveTime" type="xsd:positiveInteger" default= "60"/>
-      <xsd:element name="startDelay" type="xsd:positiveInteger" />
-    </xsd:sequence>
-  </xsd:complexType>
-</xsd:element>
-
 <xsd:element name="AS">
   <xsd:annotation>
     <xsd:documentation xml:lang="en">
diff --git a/doc/src/users-guide/ch-routing.rst b/doc/src/users-guide/ch-routing.rst
@@ -166,11 +166,8 @@ parameter.
 
    **.bgpConfig = xmldoc("BGPConfig.xml")
 
-The configuration file may contain ``<TimerParams>``, ``<AS>``, and
-``Session`` elements at the top level.
-
--  ``<TimerParams>``: allows specifying various timing parameters for
-   the routers.
+The configuration file may contain ``<AS>`` and ``<Session>`` elements
+at the top level.
 
 -  ``<AS>``: defines Autonomous Systems, routers, and rules to be
    applied.
@@ -179,18 +176,23 @@ The configuration file may contain ``<TimerParams>``, ``<AS>``, and
    must contain exactly two ``<Router exterAddr="x.x.x.x"/>``
    elements.
 
+The BGP timers are module parameters of the :ned:`Bgp` module, not part of
+the XML: :par:`connectRetryTime` (default 120s), :par:`holdTime` (180s),
+:par:`keepAliveTime` (60s) and :par:`startDelay` (the base session-startup
+delay). For example:
+
+.. code-block:: ini
+
+   **.bgp.holdTime = 90s
+
+(Earlier versions configured these in a ``<TimerParams>`` XML element, which
+is no longer accepted.)
+
 .. code-block:: xml
 
    <BGPConfig xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
      xsi:schemaLocation="BGP.xsd">
 
-     <TimerParams>
-       <connectRetryTime> 120 </connectRetryTime>
-       <holdTime> 180 </holdTime>
-       <keepAliveTime> 60 </keepAliveTime>
-       <startDelay> 15 </startDelay>
-     </TimerParams>
-
      <AS id="60111">
        <Router interAddr="172.1.10.255"/> <!--Router A1-->
        <Router interAddr="172.1.20.255"/> <!--Router A2-->
diff --git a/examples/bgpv4/Bgp2RoutersInAS/BGPConfig.xml b/examples/bgpv4/Bgp2RoutersInAS/BGPConfig.xml
@@ -2,13 +2,6 @@
 <BGPConfig xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
               xsi:schemaLocation="BGP.xsd">
 
-    <TimerParams>
-        <connectRetryTime> 120 </connectRetryTime>
-        <holdTime> 180 </holdTime>
-        <keepAliveTime> 60 </keepAliveTime>
-        <startDelay> 15 </startDelay>
-    </TimerParams>
-
     <AS id="65111">
         <Router interAddr="10.10.1.254"/> <!--router A1-->
         <Router interAddr="10.10.3.254"/> <!--router A2-->
diff --git a/examples/bgpv4/Bgp2RoutersInAS/omnetpp.ini b/examples/bgpv4/Bgp2RoutersInAS/omnetpp.ini
@@ -27,6 +27,7 @@ output-vector-precision = 4
 
 # bgp settings
 **.bgpConfig = xmldoc("BGPConfig.xml")
+**.bgp.startDelay = 15s
 
 *.B.bgp.redistributeOspf = "O IA E2"
 *.C.bgp.redistributeOspf = "O IA E2"
diff --git a/examples/bgpv4/Bgp3Routers/BGPConfig.xml b/examples/bgpv4/Bgp3Routers/BGPConfig.xml
@@ -2,13 +2,6 @@
 <BGPConfig xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
               xsi:schemaLocation="BGP.xsd">
 
-    <TimerParams>
-        <connectRetryTime> 120 </connectRetryTime>
-        <holdTime> 180 </holdTime>
-        <keepAliveTime> 60 </keepAliveTime>
-        <startDelay> 15 </startDelay>
-    </TimerParams>
-
     <AS id="65111">
         <Router interAddr="10.10.12.1"/> <!--router A-->
         <!-- DenyRoute: deny route in IN  and OUT traffic -->
diff --git a/examples/bgpv4/Bgp3Routers/omnetpp.ini b/examples/bgpv4/Bgp3Routers/omnetpp.ini
@@ -23,6 +23,7 @@ output-scalar-precision = 3
 
 # bgp settings
 **.bgpConfig = xmldoc("BGPConfig.xml")
+**.bgp.startDelay = 15s
 **.bgp.redistributeOspf = "O IA E2"
 
 # Visualizer settings
diff --git a/examples/bgpv4/BgpAndOspf/BGPConfig.xml b/examples/bgpv4/BgpAndOspf/BGPConfig.xml
@@ -2,13 +2,6 @@
 <BGPConfig xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
               xsi:schemaLocation="BGP.xsd">
 
-    <TimerParams>
-        <connectRetryTime> 120 </connectRetryTime>
-        <holdTime> 120 </holdTime>
-        <keepAliveTime> 60 </keepAliveTime>
-        <startDelay> 15 </startDelay>
-    </TimerParams>
-
     <AS id="65324">
         <Router interAddr="100.10.10.1"/> <!--router A-->
         <!-- DenyRoute: deny route in IN  and OUT traffic -->
diff --git a/examples/bgpv4/BgpAndOspf/omnetpp.ini b/examples/bgpv4/BgpAndOspf/omnetpp.ini
@@ -23,6 +23,8 @@ output-scalar-precision = 5
 
 # bgp settings
 **.bgpConfig = xmldoc("BGPConfig.xml")
+**.bgp.holdTime = 120s
+**.bgp.startDelay = 15s
 *.*.bgp.redistributeOspf = "E2"
 
 # Visualizer settings
diff --git a/examples/bgpv4/BgpAndOspfSimple/BGPConfig.xml b/examples/bgpv4/BgpAndOspfSimple/BGPConfig.xml
@@ -2,13 +2,6 @@
 <BGPConfig xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
               xsi:schemaLocation="BGP.xsd">
 
-    <TimerParams>
-        <connectRetryTime> 120 </connectRetryTime>
-        <holdTime> 180 </holdTime>
-        <keepAliveTime> 60 </keepAliveTime>
-        <startDelay> 15 </startDelay>
-    </TimerParams>
-
     <AS id="65324">
         <Router interAddr="10.10.1.2"/> <!--router A-->
     </AS>
diff --git a/examples/bgpv4/BgpAndOspfSimple/omnetpp.ini b/examples/bgpv4/BgpAndOspfSimple/omnetpp.ini
@@ -23,6 +23,7 @@ output-scalar-precision = 2
 
 # bgp settings
 **.bgpConfig = xmldoc("BGPConfig.xml")
+**.bgp.startDelay = 15s
 *.A.bgp.redistributeOspf = "E2"
 *.B.bgp.redistributeOspf = "E2"
 
diff --git a/examples/bgpv4/BgpCompleteTest/BGPConfig.xml b/examples/bgpv4/BgpCompleteTest/BGPConfig.xml
@@ -2,13 +2,6 @@
 <BGPConfig xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
               xsi:schemaLocation="BGP.xsd">
 
-    <TimerParams>
-        <connectRetryTime> 120 </connectRetryTime>
-        <holdTime> 180 </holdTime>
-        <keepAliveTime> 60 </keepAliveTime>
-        <startDelay> 15 </startDelay>
-    </TimerParams>
-
     <AS id="60111">
         <Router interAddr="172.1.10.255"/> <!--Router A1-->
         <Router interAddr="172.1.20.255"/> <!--Router A2-->
diff --git a/examples/bgpv4/BgpCompleteTest/omnetpp.ini b/examples/bgpv4/BgpCompleteTest/omnetpp.ini
@@ -23,6 +23,7 @@ output-scalar-precision = 5
 
 # bgp settings
 **.bgpConfig = xmldoc("BGPConfig.xml")
+**.bgp.startDelay = 15s
 *.*.bgp.redistributeOspf = "O IA E2"
 *.C*.bgp.nextHopSelf = true
 *.C*.bgp.redistributeInternal = true
diff --git a/examples/bgpv4/BgpIpv6Basic/BgpConfig6.xml b/examples/bgpv4/BgpIpv6Basic/BgpConfig6.xml
@@ -1,13 +1,6 @@
 <?xml version="1.0" encoding="ISO-8859-1"?>
 <BGPConfig>
 
-    <TimerParams>
-        <connectRetryTime> 120 </connectRetryTime>
-        <holdTime> 180 </holdTime>
-        <keepAliveTime> 60 </keepAliveTime>
-        <startDelay> 1 </startDelay>
-    </TimerParams>
-
     <AS id="65001">
         <Router interAddr="2001:db8:0:1::1"> <!-- rA -->
             <Network address="2001:db8:0:10::"/> <!-- the network behind rA -->
diff --git a/examples/bgpv4/BgpLifecycle/BGPConfig.xml b/examples/bgpv4/BgpLifecycle/BGPConfig.xml
@@ -1,13 +1,6 @@
 <?xml version="1.0" encoding="ISO-8859-1"?>
 <BGPConfig xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="BGP.xsd">
 
-    <TimerParams>
-        <connectRetryTime> 120 </connectRetryTime>
-        <holdTime> 180 </holdTime>
-        <keepAliveTime> 60 </keepAliveTime>
-        <startDelay> 2 </startDelay>
-    </TimerParams>
-
     <AS id="65324">
         <!--router A-->
         <Router interAddr="192.168.1.254"/>
diff --git a/examples/bgpv4/BgpLifecycle/omnetpp.ini b/examples/bgpv4/BgpLifecycle/omnetpp.ini
@@ -24,6 +24,7 @@ output-scalar-precision = 5
 
 # bgp settings
 **.bgpConfig = xmldoc("BGPConfig.xml")
+**.bgp.startDelay = 2s
 **.redistributeOspf = "O IA"
 
 # Visualizer settings
diff --git a/examples/bgpv4/BgpOpen/BGPConfig.xml b/examples/bgpv4/BgpOpen/BGPConfig.xml
@@ -2,13 +2,6 @@
 <BGPConfig xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
               xsi:schemaLocation="BGP.xsd">
 
-    <TimerParams>
-        <connectRetryTime> 120 </connectRetryTime>
-        <holdTime> 180 </holdTime>
-        <keepAliveTime> 680 </keepAliveTime>
-        <startDelay> 2 </startDelay>
-    </TimerParams>
-
     <AS id="65324">
         <Router interAddr="10.10.10.1"/> <!--router A-->
     </AS>
diff --git a/examples/bgpv4/BgpOpen/omnetpp.ini b/examples/bgpv4/BgpOpen/omnetpp.ini
@@ -21,6 +21,8 @@ output-scalar-precision = 2
 
 # bgp settings
 **.bgpConfig = xmldoc("BGPConfig.xml")
+**.bgp.keepAliveTime = 680s
+**.bgp.startDelay = 2s
 
 # Visualizer settings
 *.visualizer.interfaceTableVisualizer.displayInterfaceTables = true
diff --git a/examples/bgpv4/BgpUpdate/BGPConfig.xml b/examples/bgpv4/BgpUpdate/BGPConfig.xml
@@ -1,13 +1,6 @@
 <?xml version="1.0" encoding="ISO-8859-1"?>
 <BGPConfig xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="BGP.xsd">
 
-    <TimerParams>
-        <connectRetryTime> 120 </connectRetryTime>
-        <holdTime> 180 </holdTime>
-        <keepAliveTime> 60 </keepAliveTime>
-        <startDelay> 2 </startDelay>
-    </TimerParams>
-
     <AS id="65324">
         <!--router A-->
         <Router interAddr="192.168.1.254"/>
diff --git a/examples/bgpv4/BgpUpdate/omnetpp.ini b/examples/bgpv4/BgpUpdate/omnetpp.ini
@@ -24,6 +24,7 @@ output-scalar-precision = 5
 
 # bgp settings
 **.bgpConfig = xmldoc("BGPConfig.xml")
+**.bgp.startDelay = 2s
 **.redistributeOspf = "O IA"
 
 # Visualizer settings
diff --git a/src/inet/routing/bgpv4/Bgp.ned b/src/inet/routing/bgpv4/Bgp.ned
@@ -17,11 +17,9 @@ import inet.routing.contract.IBgp;
 // that apply to it (the local router is recognized by its interface addresses). The XML has
 // one `<BGPConfig>` root element containing:
 //
-// - `<TimerParams>` - the BGP timers, in seconds, applied to all sessions:
-//   - `<connectRetryTime>` - the ConnectRetryTimer interval (RFC 4271).
-//   - `<holdTime>` - the Hold Time proposed in the OPEN message.
-//   - `<keepAliveTime>` - the KeepAlive interval (typically holdTime/3).
-//   - `<startDelay>` - base delay before a router starts its sessions (staggers startup).
+// The BGP timers (ConnectRetryTime, HoldTime, KeepAliveTime and the session-startup
+// `startDelay`) are module parameters, not part of the XML; see below. (Earlier versions
+// configured them in a `<TimerParams>` XML element, which is no longer accepted.)
 //
 // - `<AS>` - an autonomous system.
 //   - `@id` - the AS number.
@@ -60,7 +58,11 @@ simple Bgp extends SimpleModule like IBgp
         volatile double startupTime @unit(s) = default(0s); // Delay before starting BGP
         double shutdownTime @unit(s) = default(1s); // On graceful stop, delay before destroying BGP state so TCP can flush the session teardown (FIN)
         double stopOperationTimeout @unit(s) = default(2s); // Timeout for the lifecycle stop operation
+        double connectRetryTime @unit(s) = default(120s); // ConnectRetryTimer interval (RFC 4271), applied to all sessions
+        double holdTime @unit(s) = default(180s); // Hold Time proposed in the OPEN message (RFC 4271); the effective hold time is negotiated to the minimum of the two peers
+        double keepAliveTime @unit(s) = default(60s); // KeepAlive interval (RFC 4271), typically holdTime/3
         xml bgpConfig;
+        double startDelay @unit(s) = default(1s); // Base delay before a router starts its sessions (staggers session startup; per-session offsets are added on top)
         double ExternalPeerStartDelayOffset @unit(s) = default(0.5s);
         bool redistributeRip = default(false);        // Redistribute routes learned by RIP into BGP
         string redistributeOspf = default("");        // Redistribute routes learned by OSPF into BGP (O IA E1 E2)
diff --git a/src/inet/routing/bgpv4/BgpConfigReader.cc b/src/inet/routing/bgpv4/BgpConfigReader.cc
@@ -26,13 +26,22 @@ void BgpConfigReader::loadConfigFromXml(cXMLElement *bgpConfig, BgpRouter *bgpRo
     if (strcmp(bgpConfig->getTagName(), "BGPConfig"))
         throw cRuntimeError("Cannot read BGP configuration, unaccepted '%s' node at %s", bgpConfig->getTagName(), bgpConfig->getSourceLocation());
 
-    // load bgp timer parameters informations
+    // BGP timers are module parameters now; the old <TimerParams> XML element is rejected
     cXMLElement *paramNode = bgpConfig->getElementByPath("TimerParams");
-    if (paramNode == nullptr)
-        throw cRuntimeError("BGP Error: No configuration for BGP timer parameters");
-    cXMLElementList timerConfig = paramNode->getChildren();
+    if (paramNode != nullptr)
+        throw cRuntimeError("BGP: <TimerParams> in the bgpConfig XML is no longer supported; "
+                "BGP timers are module parameters now. Move them to the Bgp module (e.g. in omnetpp.ini):\n"
+                "    **.bgp.connectRetryTime = 120s\n"
+                "    **.bgp.holdTime         = 180s\n"
+                "    **.bgp.keepAliveTime    = 60s\n"
+                "    **.bgp.startDelay       = 1s     (if used)\n"
+                "then delete the <TimerParams> element at %s", paramNode->getSourceLocation());
+
     simtime_t delayTab[NB_TIMERS];
-    loadTimerConfig(timerConfig, delayTab);
+    delayTab[0] = bgpModule->par("connectRetryTime").doubleValue();
+    delayTab[1] = bgpModule->par("holdTime").doubleValue();
+    delayTab[2] = bgpModule->par("keepAliveTime").doubleValue();
+    delayTab[3] = bgpModule->par("startDelay").doubleValue();
 
     // find my AS
     cXMLElementList ASList = bgpConfig->getElementsByTagName("AS");
@@ -75,25 +84,6 @@ void BgpConfigReader::loadConfigFromXml(cXMLElement *bgpConfig, BgpRouter *bgpRo
     loadASConfig(ASConfig);
 }
 
-void BgpConfigReader::loadTimerConfig(cXMLElementList& timerConfig, simtime_t *delayTab)
-{
-    for (auto& elem : timerConfig) {
-        std::string nodeName = (elem)->getTagName();
-        if (nodeName == "connectRetryTime") {
-            delayTab[0] = (double)atoi((elem)->getNodeValue());
-        }
-        else if (nodeName == "holdTime") {
-            delayTab[1] = (double)atoi((elem)->getNodeValue());
-        }
-        else if (nodeName == "keepAliveTime") {
-            delayTab[2] = (double)atoi((elem)->getNodeValue());
-        }
-        else if (nodeName == "startDelay") {
-            delayTab[3] = (double)atoi((elem)->getNodeValue());
-        }
-    }
-}
-
 AsId BgpConfigReader::findMyAS(cXMLElementList& asList, int& outRouterPosition)
 {
     // find my own Ipv4 address in the configuration file and return the AS id under which it is configured
diff --git a/src/inet/routing/bgpv4/BgpConfigReader.h b/src/inet/routing/bgpv4/BgpConfigReader.h
@@ -37,7 +37,6 @@ class INET_API BgpConfigReader
     void loadASConfig(cXMLElementList& ASConfig);
     void loadEbgpSessionConfig(cXMLElementList& ASConfig, cXMLElementList& sessionList, simtime_t *delayTab);
     AsId findMyAS(cXMLElementList& ASList, int& outRouterPosition);
-    void loadTimerConfig(cXMLElementList& timerConfig, simtime_t *delayTab);
     int isInInterfaceTable(IInterfaceTable *ifTable, const L3Address& addr);
     int isInInterfaceTable(IInterfaceTable *ifTable, std::string ifName);
     unsigned int calculateStartDelay(int rtListSize, unsigned char rtPosition, unsigned char rtPeerPosition);
diff --git a/tutorials/bgp/BGPConfig.xml b/tutorials/bgp/BGPConfig.xml
@@ -1,13 +1,6 @@
 <?xml version="1.0" encoding="ISO-8859-1"?>
 <BGPConfig xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="BGP.xsd">
 
-    <TimerParams>
-        <connectRetryTime> 120 </connectRetryTime>
-        <holdTime>         180 </holdTime>
-        <keepAliveTime>    60  </keepAliveTime>
-        <startDelay>       50   </startDelay>   <!--long enough for the intra-AS routing protocol to converge-->
-    </TimerParams>
-
     <AS id="64500">
     	<!--router RA4-->
         <Router interAddr="10.0.0.1">
diff --git a/tutorials/bgp/BGPConfig_Basic.xml b/tutorials/bgp/BGPConfig_Basic.xml
@@ -1,13 +1,6 @@
 <?xml version="1.0" encoding="ISO-8859-1"?>
 <BGPConfig xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="BGP.xsd">
 
-    <TimerParams>
-        <connectRetryTime> 120 </connectRetryTime>
-        <holdTime>         180 </holdTime>
-        <keepAliveTime>    60  </keepAliveTime>
-        <startDelay>       5   </startDelay>
-    </TimerParams>
-
     <AS id="64520">
     	<!--router RA1-->
         <Router interAddr="10.0.0.9">
diff --git a/tutorials/bgp/BGPConfig_EBGP.xml b/tutorials/bgp/BGPConfig_EBGP.xml
@@ -1,13 +1,6 @@
 <?xml version="1.0" encoding="ISO-8859-1"?>
 <BGPConfig xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="BGP.xsd">
 
-    <TimerParams>
-        <connectRetryTime> 120 </connectRetryTime>
-        <holdTime>         180 </holdTime>
-        <keepAliveTime>    60  </keepAliveTime>
-        <startDelay>       60   </startDelay>
-    </TimerParams>
-
     <AS id="64500">
     	<!--router RA4-->
         <Router interAddr="10.0.0.1" />
diff --git a/tutorials/bgp/BGPConfig_FullAS.xml b/tutorials/bgp/BGPConfig_FullAS.xml
@@ -1,13 +1,6 @@
 <?xml version="1.0" encoding="ISO-8859-1"?>
 <BGPConfig xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="BGP.xsd">
 
-    <TimerParams>
-        <connectRetryTime> 120 </connectRetryTime>
-        <holdTime>         180 </holdTime>
-        <keepAliveTime>    60  </keepAliveTime>
-        <startDelay>       60   </startDelay>
-    </TimerParams>
-
     <AS id="64500">
     	<!--router RA4-->
         <Router interAddr="10.0.0.1" />
diff --git a/tutorials/bgp/BGPConfig_IBGP.xml b/tutorials/bgp/BGPConfig_IBGP.xml
diff --git a/tutorials/bgp/BGPConfig_IBGP_NextHopSelf.xml b/tutorials/bgp/BGPConfig_IBGP_NextHopSelf.xml
diff --git a/tutorials/bgp/BGPConfig_LOCAL_PREF.xml b/tutorials/bgp/BGPConfig_LOCAL_PREF.xml
diff --git a/tutorials/bgp/BGPConfig_Multi.xml b/tutorials/bgp/BGPConfig_Multi.xml
diff --git a/tutorials/bgp/BGPConfig_MultiHopEBGP.xml b/tutorials/bgp/BGPConfig_MultiHopEBGP.xml
diff --git a/tutorials/bgp/BGPConfig_Multi_RB3.xml b/tutorials/bgp/BGPConfig_Multi_RB3.xml
diff --git a/tutorials/bgp/BGPConfig_Redist.xml b/tutorials/bgp/BGPConfig_Redist.xml
diff --git a/tutorials/bgp/omnetpp.ini b/tutorials/bgp/omnetpp.ini
