diff --git a/GIT-VIRL-HS-Fulda/advcompnet-lab1-dcn-scenario1.virl b/GIT-VIRL-HS-Fulda/advcompnet-lab1-dcn-scenario1.virl
index fb92bcd..0d1e219 100644
--- a/GIT-VIRL-HS-Fulda/advcompnet-lab1-dcn-scenario1.virl
+++ b/GIT-VIRL-HS-Fulda/advcompnet-lab1-dcn-scenario1.virl
@@ -6,6 +6,8 @@
 !
 ! boot system flash:/vEOS.swi
 !
+! AdvCompNet Lab 1 DCN Scenario 1
+!
 transceiver qsfp default-mode 4x10G
 !
 hostname vEOS-1
@@ -52,6 +54,8 @@ end
 !
 ! boot system flash:/vEOS.swi
 !
+! AdvCompNet Lab 1 DCN Scenario 1
+!
 transceiver qsfp default-mode 4x10G
 !
 hostname vEOS-2
@@ -106,6 +110,8 @@ end
 !
 ! boot system flash:/vEOS.swi
 !
+! AdvCompNet Lab 1 DCN Scenario 1
+!
 transceiver qsfp default-mode 4x10G
 !
 hostname vEOS-3
@@ -155,6 +161,48 @@ end
         <interface id="5" name="Ethernet6"/>
     </node>
     <node name="veos-4" type="SIMPLE" subtype="vEOS" location="413,221">
+        <extensions>
+            <entry key="config" type="String">! device: vEOS-4 (vEOS, EOS-4.14.2F)&#xD;
+!&#xD;
+! boot system flash:/vEOS.swi&#xD;
+!&#xD;
+! AdvCompNet Lab 1 DCN Scenario 1&#xD;
+!&#xD;
+transceiver qsfp default-mode 4x10G&#xD;
+!&#xD;
+hostname vEOS-4&#xD;
+!&#xD;
+spanning-tree mode rapid-pvst&#xD;
+!&#xD;
+no aaa root&#xD;
+!&#xD;
+username admin privilege 15 role network-admin secret 5 $1$1.amWz6M$rWEBTalt7rkz5d8/8dbmU0&#xD;
+username cisco privilege 15 role network-admin secret 5 $1$rQS0W9wP$ZUzVG2XoGCCZCJopFp1aV/&#xD;
+!&#xD;
+interface Ethernet1&#xD;
+   switchport mode trunk&#xD;
+!&#xD;
+interface Ethernet2&#xD;
+   switchport mode trunk&#xD;
+!&#xD;
+interface Ethernet3&#xD;
+   switchport mode trunk&#xD;
+!&#xD;
+interface Ethernet4&#xD;
+   switchport mode trunk&#xD;
+!&#xD;
+interface Management1&#xD;
+  ! ip of ma1 configured on launch&#xD;
+!&#xD;
+interface Vlan1&#xD;
+   ip address 10.10.10.40/24&#xD;
+!&#xD;
+no ip routing&#xD;
+!&#xD;
+!&#xD;
+end&#xD;
+</entry>
+        </extensions>
         <interface id="0" name="Ethernet1"/>
         <interface id="1" name="Ethernet2"/>
         <interface id="2" name="Ethernet3"/>
diff --git a/GIT-VIRL-HS-Fulda/advcompnet-lab1-dcn-scenario2.virl b/GIT-VIRL-HS-Fulda/advcompnet-lab1-dcn-scenario2.virl
new file mode 100644
index 0000000..7d981c7
--- /dev/null
+++ b/GIT-VIRL-HS-Fulda/advcompnet-lab1-dcn-scenario2.virl
@@ -0,0 +1,271 @@
+<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
+<topology xmlns="http://www.cisco.com/VIRL" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" schemaVersion="0.9" xsi:schemaLocation="http://www.cisco.com/VIRL https://raw.github.com/CiscoVIRL/schema/v0.9/virl.xsd">
+    <node name="veos-1" type="SIMPLE" subtype="vEOS" location="413,31">
+        <extensions>
+            <entry key="config" type="String">! device: vEOS-1 (vEOS, EOS-4.14.2F)&#xD;
+!&#xD;
+! boot system flash:/vEOS.swi&#xD;
+!&#xD;
+! AdvCompNet Lab 1 DCN Scenario 2&#xD;
+!&#xD;
+transceiver qsfp default-mode 4x10G&#xD;
+!&#xD;
+hostname vEOS-1&#xD;
+!&#xD;
+spanning-tree mode rapid-pvst&#xD;
+!&#xD;
+no aaa root&#xD;
+!&#xD;
+username admin privilege 15 role network-admin secret 5 $1$BfEAqVKe$0Et37rrWZGmDpeYfmQ8S40&#xD;
+username cisco privilege 15 role network-admin secret 5 $1$rQS0W9wP$ZUzVG2XoGCCZCJopFp1aV/&#xD;
+!&#xD;
+interface Port-Channel12&#xD;
+   switchport mode trunk&#xD;
+!&#xD;
+interface Port-Channel13&#xD;
+   switchport mode trunk&#xD;
+!&#xD;
+interface Ethernet1&#xD;
+   switchport mode trunk&#xD;
+   channel-group 12 mode on&#xD;
+!&#xD;
+interface Ethernet2&#xD;
+   switchport mode trunk&#xD;
+   channel-group 12 mode on&#xD;
+!&#xD;
+interface Ethernet3&#xD;
+   switchport mode trunk&#xD;
+   channel-group 13 mode on&#xD;
+!&#xD;
+interface Ethernet4&#xD;
+   switchport mode trunk&#xD;
+   channel-group 13 mode on&#xD;
+!&#xD;
+interface Management1&#xD;
+  ! ip of ma1 configured on launch&#xD;
+!&#xD;
+interface Vlan1&#xD;
+   ip address 10.10.10.10/24&#xD;
+!&#xD;
+no ip routing&#xD;
+!&#xD;
+!&#xD;
+end&#xD;
+</entry>
+        </extensions>
+        <interface id="0" name="Ethernet1"/>
+        <interface id="1" name="Ethernet2"/>
+        <interface id="2" name="Ethernet3"/>
+        <interface id="3" name="Ethernet4"/>
+    </node>
+    <node name="veos-2" type="SIMPLE" subtype="vEOS" location="218,127">
+        <extensions>
+            <entry key="config" type="String">! device: vEOS-2 (vEOS, EOS-4.14.2F)&#xD;
+!&#xD;
+! boot system flash:/vEOS.swi&#xD;
+!&#xD;
+! AdvCompNet Lab 1 DCN Scenario 2&#xD;
+!&#xD;
+transceiver qsfp default-mode 4x10G&#xD;
+!&#xD;
+hostname vEOS-2&#xD;
+!&#xD;
+spanning-tree mode rapid-pvst&#xD;
+!&#xD;
+no aaa root&#xD;
+!&#xD;
+username admin privilege 15 role network-admin secret 5 $1$yUkG2yoL$0Lq.DaVPw9ECzR4Ew1.wW.&#xD;
+username cisco privilege 15 role network-admin secret 5 $1$rQS0W9wP$ZUzVG2XoGCCZCJopFp1aV/&#xD;
+!&#xD;
+interface Port-Channel12&#xD;
+   switchport mode trunk&#xD;
+!&#xD;
+interface Port-Channel23&#xD;
+   switchport mode trunk&#xD;
+!&#xD;
+interface Port-Channel24&#xD;
+   switchport mode trunk&#xD;
+!&#xD;
+interface Ethernet1&#xD;
+   switchport mode trunk&#xD;
+   channel-group 12 mode on&#xD;
+!&#xD;
+interface Ethernet2&#xD;
+   switchport mode trunk&#xD;
+   channel-group 12 mode on&#xD;
+!&#xD;
+interface Ethernet3&#xD;
+   switchport mode trunk&#xD;
+   channel-group 23 mode on&#xD;
+!&#xD;
+interface Ethernet4&#xD;
+   switchport mode trunk&#xD;
+   channel-group 23 mode on&#xD;
+!&#xD;
+interface Ethernet5&#xD;
+   switchport mode trunk&#xD;
+   channel-group 24 mode on&#xD;
+!&#xD;
+interface Ethernet6&#xD;
+   switchport mode trunk&#xD;
+   channel-group 24 mode on&#xD;
+!&#xD;
+interface Management1&#xD;
+  ! ip of ma1 configured on launch&#xD;
+!&#xD;
+interface Vlan1&#xD;
+   ip address 10.10.10.20/24&#xD;
+!&#xD;
+no ip routing&#xD;
+!&#xD;
+!&#xD;
+end&#xD;
+</entry>
+        </extensions>
+        <interface id="0" name="Ethernet1"/>
+        <interface id="1" name="Ethernet2"/>
+        <interface id="2" name="Ethernet3"/>
+        <interface id="3" name="Ethernet4"/>
+        <interface id="4" name="Ethernet5"/>
+        <interface id="5" name="Ethernet6"/>
+    </node>
+    <node name="veos-3" type="SIMPLE" subtype="vEOS" location="611,127">
+        <extensions>
+            <entry key="config" type="String">! device: vEOS-3 (vEOS, EOS-4.14.2F)&#xD;
+!&#xD;
+! boot system flash:/vEOS.swi&#xD;
+!&#xD;
+! AdvCompNet Lab 1 DCN Scenario 2&#xD;
+!&#xD;
+transceiver qsfp default-mode 4x10G&#xD;
+!&#xD;
+hostname vEOS-3&#xD;
+!&#xD;
+spanning-tree mode rapid-pvst&#xD;
+!&#xD;
+no aaa root&#xD;
+!&#xD;
+username admin privilege 15 role network-admin secret 5 $1$sWptr0oA$lH1Jhpd3Uio1z44ImC83p1&#xD;
+username cisco privilege 15 role network-admin secret 5 $1$rQS0W9wP$ZUzVG2XoGCCZCJopFp1aV/&#xD;
+!&#xD;
+interface Port-Channel13&#xD;
+   switchport mode trunk&#xD;
+!&#xD;
+interface Port-Channel23&#xD;
+   switchport mode trunk&#xD;
+!&#xD;
+interface Port-Channel34&#xD;
+   switchport mode trunk&#xD;
+!&#xD;
+interface Ethernet1&#xD;
+   switchport mode trunk&#xD;
+   channel-group 23 mode on&#xD;
+!&#xD;
+interface Ethernet2&#xD;
+   switchport mode trunk&#xD;
+   channel-group 23 mode on&#xD;
+!&#xD;
+interface Ethernet3&#xD;
+   switchport mode trunk&#xD;
+   channel-group 13 mode on&#xD;
+!&#xD;
+interface Ethernet4&#xD;
+   switchport mode trunk&#xD;
+   channel-group 13 mode on&#xD;
+!&#xD;
+interface Ethernet5&#xD;
+   switchport mode trunk&#xD;
+   channel-group 34 mode on&#xD;
+!&#xD;
+interface Ethernet6&#xD;
+   switchport mode trunk&#xD;
+   channel-group 34 mode on&#xD;
+!&#xD;
+interface Management1&#xD;
+  ! ip of ma1 configured on launch&#xD;
+!&#xD;
+interface Vlan1&#xD;
+   ip address 10.10.10.30/24&#xD;
+!&#xD;
+no ip routing&#xD;
+!&#xD;
+!&#xD;
+end&#xD;
+</entry>
+        </extensions>
+        <interface id="0" name="Ethernet1"/>
+        <interface id="1" name="Ethernet2"/>
+        <interface id="2" name="Ethernet3"/>
+        <interface id="3" name="Ethernet4"/>
+        <interface id="4" name="Ethernet5"/>
+        <interface id="5" name="Ethernet6"/>
+    </node>
+    <node name="veos-4" type="SIMPLE" subtype="vEOS" location="413,221">
+        <extensions>
+            <entry key="config" type="String">! device: vEOS-4 (vEOS, EOS-4.14.2F)&#xD;
+!&#xD;
+! boot system flash:/vEOS.swi&#xD;
+!&#xD;
+! AdvCompNet Lab 1 DCN Scenario 2&#xD;
+!&#xD;
+transceiver qsfp default-mode 4x10G&#xD;
+!&#xD;
+hostname vEOS-4&#xD;
+!&#xD;
+spanning-tree mode rapid-pvst&#xD;
+!&#xD;
+no aaa root&#xD;
+!&#xD;
+username admin privilege 15 role network-admin secret 5 $1$1.amWz6M$rWEBTalt7rkz5d8/8dbmU0&#xD;
+username cisco privilege 15 role network-admin secret 5 $1$rQS0W9wP$ZUzVG2XoGCCZCJopFp1aV/&#xD;
+!&#xD;
+interface Port-Channel24&#xD;
+   switchport mode trunk&#xD;
+!&#xD;
+interface Port-Channel34&#xD;
+   switchport mode trunk&#xD;
+!&#xD;
+interface Ethernet1&#xD;
+   switchport mode trunk&#xD;
+   channel-group 24 mode on&#xD;
+!&#xD;
+interface Ethernet2&#xD;
+   switchport mode trunk&#xD;
+   channel-group 24 mode on&#xD;
+!&#xD;
+interface Ethernet3&#xD;
+   switchport mode trunk&#xD;
+   channel-group 34 mode on&#xD;
+!&#xD;
+interface Ethernet4&#xD;
+   switchport mode trunk&#xD;
+   channel-group 34 mode on&#xD;
+!&#xD;
+interface Management1&#xD;
+  ! ip of ma1 configured on launch&#xD;
+!&#xD;
+interface Vlan1&#xD;
+   ip address 10.10.10.40/24&#xD;
+!&#xD;
+no ip routing&#xD;
+!&#xD;
+!&#xD;
+end&#xD;
+</entry>
+        </extensions>
+        <interface id="0" name="Ethernet1"/>
+        <interface id="1" name="Ethernet2"/>
+        <interface id="2" name="Ethernet3"/>
+        <interface id="3" name="Ethernet4"/>
+    </node>
+    <connection dst="/virl:topology/virl:node[1]/virl:interface[1]" src="/virl:topology/virl:node[2]/virl:interface[1]"/>
+    <connection dst="/virl:topology/virl:node[1]/virl:interface[2]" src="/virl:topology/virl:node[2]/virl:interface[2]"/>
+    <connection dst="/virl:topology/virl:node[3]/virl:interface[1]" src="/virl:topology/virl:node[2]/virl:interface[3]"/>
+    <connection dst="/virl:topology/virl:node[3]/virl:interface[2]" src="/virl:topology/virl:node[2]/virl:interface[4]"/>
+    <connection dst="/virl:topology/virl:node[4]/virl:interface[1]" src="/virl:topology/virl:node[2]/virl:interface[5]"/>
+    <connection dst="/virl:topology/virl:node[4]/virl:interface[2]" src="/virl:topology/virl:node[2]/virl:interface[6]"/>
+    <connection dst="/virl:topology/virl:node[3]/virl:interface[3]" src="/virl:topology/virl:node[1]/virl:interface[3]"/>
+    <connection dst="/virl:topology/virl:node[3]/virl:interface[4]" src="/virl:topology/virl:node[1]/virl:interface[4]"/>
+    <connection dst="/virl:topology/virl:node[3]/virl:interface[5]" src="/virl:topology/virl:node[4]/virl:interface[3]"/>
+    <connection dst="/virl:topology/virl:node[3]/virl:interface[6]" src="/virl:topology/virl:node[4]/virl:interface[4]"/>
+</topology>
diff --git a/GIT-VIRL-HS-Fulda/advcompnet-lab1-dcn-scenario3.virl b/GIT-VIRL-HS-Fulda/advcompnet-lab1-dcn-scenario3.virl
new file mode 100644
index 0000000..e2ec496
--- /dev/null
+++ b/GIT-VIRL-HS-Fulda/advcompnet-lab1-dcn-scenario3.virl
@@ -0,0 +1,321 @@
+<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
+<topology xmlns="http://www.cisco.com/VIRL" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" schemaVersion="0.9" xsi:schemaLocation="http://www.cisco.com/VIRL https://raw.github.com/CiscoVIRL/schema/v0.9/virl.xsd">
+    <node name="veos-1" type="SIMPLE" subtype="vEOS" location="413,31">
+        <extensions>
+            <entry key="config" type="String">! device: vEOS-1 (vEOS, EOS-4.14.2F)&#xD;
+!&#xD;
+! boot system flash:/vEOS.swi&#xD;
+!&#xD;
+! AdvCompNet Lab 1 DCN Scenario 3&#xD;
+!&#xD;
+transceiver qsfp default-mode 4x10G&#xD;
+!&#xD;
+hostname vEOS-1&#xD;
+!&#xD;
+spanning-tree mode rapid-pvst&#xD;
+!&#xD;
+no aaa root&#xD;
+!&#xD;
+username admin privilege 15 role network-admin secret 5 $1$BfEAqVKe$0Et37rrWZGmDpeYfmQ8S40&#xD;
+username cisco privilege 15 role network-admin secret 5 $1$rQS0W9wP$ZUzVG2XoGCCZCJopFp1aV/&#xD;
+!&#xD;
+interface Port-Channel11&#xD;
+   switchport mode trunk&#xD;
+!&#xD;
+interface Port-Channel12&#xD;
+   switchport mode trunk&#xD;
+!&#xD;
+interface Ethernet1&#xD;
+   switchport mode trunk&#xD;
+   channel-group 11 mode on&#xD;
+!&#xD;
+interface Ethernet2&#xD;
+   switchport mode trunk&#xD;
+   channel-group 12 mode on&#xD;
+!&#xD;
+interface Ethernet3&#xD;
+   switchport mode trunk&#xD;
+   channel-group 11 mode on&#xD;
+!&#xD;
+interface Ethernet4&#xD;
+   switchport mode trunk&#xD;
+   channel-group 12 mode on&#xD;
+!&#xD;
+interface Management1&#xD;
+  ! ip of ma1 configured on launch&#xD;
+!&#xD;
+interface Vlan1&#xD;
+   ip address 10.10.10.10/24&#xD;
+!&#xD;
+no ip routing&#xD;
+!&#xD;
+!&#xD;
+end&#xD;
+</entry>
+        </extensions>
+        <interface id="0" name="Ethernet1"/>
+        <interface id="1" name="Ethernet2"/>
+        <interface id="2" name="Ethernet3"/>
+        <interface id="3" name="Ethernet4"/>
+    </node>
+    <node name="veos-2" type="SIMPLE" subtype="vEOS" location="218,127">
+        <extensions>
+            <entry key="config" type="String">! device: vEOS-2 (vEOS, EOS-4.14.2F)&#xD;
+!&#xD;
+! boot system flash:/vEOS.swi&#xD;
+!&#xD;
+! AdvCompNet Lab 1 DCN Scenario 3&#xD;
+!&#xD;
+transceiver qsfp default-mode 4x10G&#xD;
+!&#xD;
+hostname vEOS-2&#xD;
+!&#xD;
+spanning-tree mode rapid-pvst&#xD;
+no spanning-tree vlan 99&#xD;
+!&#xD;
+no aaa root&#xD;
+!&#xD;
+username admin privilege 15 role network-admin secret 5 $1$yUkG2yoL$0Lq.DaVPw9ECzR4Ew1.wW.&#xD;
+username cisco privilege 15 role network-admin secret 5 $1$rQS0W9wP$ZUzVG2XoGCCZCJopFp1aV/&#xD;
+!&#xD;
+vlan 99&#xD;
+   name MLAG&#xD;
+   trunk group mlagpeer&#xD;
+!&#xD;
+interface Port-Channel11&#xD;
+   switchport mode trunk&#xD;
+   mlag 11&#xD;
+!&#xD;
+interface Port-Channel12&#xD;
+   switchport mode trunk&#xD;
+   mlag 12&#xD;
+!&#xD;
+interface Port-Channel21&#xD;
+   switchport mode trunk&#xD;
+   mlag 21&#xD;
+!&#xD;
+interface Port-Channel22&#xD;
+   switchport mode trunk&#xD;
+   mlag 22&#xD;
+!&#xD;
+interface Port-Channel23&#xD;
+   switchport mode trunk&#xD;
+   switchport trunk group mlagpeer&#xD;
+!&#xD;
+interface Ethernet1&#xD;
+   switchport mode trunk&#xD;
+   channel-group 11 mode on&#xD;
+!&#xD;
+interface Ethernet2&#xD;
+   switchport mode trunk&#xD;
+   channel-group 12 mode on&#xD;
+!&#xD;
+interface Ethernet3&#xD;
+   switchport mode trunk&#xD;
+   channel-group 23 mode on&#xD;
+!&#xD;
+interface Ethernet4&#xD;
+   switchport mode trunk&#xD;
+   channel-group 23 mode on&#xD;
+!&#xD;
+interface Ethernet5&#xD;
+   switchport mode trunk&#xD;
+   channel-group 21 mode on&#xD;
+!&#xD;
+interface Ethernet6&#xD;
+   switchport mode trunk&#xD;
+   channel-group 22 mode on&#xD;
+!&#xD;
+interface Management1&#xD;
+  ! ip of ma1 configured on launch&#xD;
+!&#xD;
+interface Vlan1&#xD;
+   ip address 10.10.10.20/24&#xD;
+!&#xD;
+interface Vlan99&#xD;
+   ip address 172.23.99.1/30&#xD;
+!&#xD;
+no ip routing&#xD;
+!&#xD;
+mlag configuration&#xD;
+   domain-id mlag1&#xD;
+   local-interface Vlan99&#xD;
+   peer-address 172.23.99.2&#xD;
+   peer-link Port-Channel23&#xD;
+!&#xD;
+!&#xD;
+end&#xD;
+</entry>
+        </extensions>
+        <interface id="0" name="Ethernet1"/>
+        <interface id="1" name="Ethernet2"/>
+        <interface id="2" name="Ethernet3"/>
+        <interface id="3" name="Ethernet4"/>
+        <interface id="4" name="Ethernet5"/>
+        <interface id="5" name="Ethernet6"/>
+    </node>
+    <node name="veos-3" type="SIMPLE" subtype="vEOS" location="611,127">
+        <extensions>
+            <entry key="config" type="String">! device: vEOS-3 (vEOS, EOS-4.14.2F)&#xD;
+!&#xD;
+! boot system flash:/vEOS.swi&#xD;
+!&#xD;
+! AdvCompNet Lab 1 DCN Scenario 3&#xD;
+!&#xD;
+transceiver qsfp default-mode 4x10G&#xD;
+!&#xD;
+hostname vEOS-3&#xD;
+!&#xD;
+spanning-tree mode rapid-pvst&#xD;
+no spanning-tree vlan 99&#xD;
+!&#xD;
+no aaa root&#xD;
+!&#xD;
+username admin privilege 15 role network-admin secret 5 $1$sWptr0oA$lH1Jhpd3Uio1z44ImC83p1&#xD;
+username cisco privilege 15 role network-admin secret 5 $1$rQS0W9wP$ZUzVG2XoGCCZCJopFp1aV/&#xD;
+!&#xD;
+vlan 99&#xD;
+   name MLAG&#xD;
+   trunk group mlagpeer&#xD;
+!&#xD;
+interface Port-Channel11&#xD;
+   switchport mode trunk&#xD;
+   mlag 11&#xD;
+!&#xD;
+interface Port-Channel12&#xD;
+   switchport mode trunk&#xD;
+   mlag 12&#xD;
+!&#xD;
+interface Port-Channel21&#xD;
+   switchport mode trunk&#xD;
+   mlag 21&#xD;
+!&#xD;
+interface Port-Channel22&#xD;
+   switchport mode trunk&#xD;
+   mlag 22&#xD;
+!&#xD;
+interface Port-Channel23&#xD;
+   switchport mode trunk&#xD;
+   switchport trunk group mlagpeer&#xD;
+!&#xD;
+interface Ethernet1&#xD;
+   switchport mode trunk&#xD;
+   channel-group 23 mode on&#xD;
+!&#xD;
+interface Ethernet2&#xD;
+   switchport mode trunk&#xD;
+   channel-group 23 mode on&#xD;
+!&#xD;
+interface Ethernet3&#xD;
+   switchport mode trunk&#xD;
+   channel-group 11 mode on&#xD;
+!&#xD;
+interface Ethernet4&#xD;
+   switchport mode trunk&#xD;
+   channel-group 12 mode on&#xD;
+!&#xD;
+interface Ethernet5&#xD;
+   switchport mode trunk&#xD;
+   channel-group 21 mode on&#xD;
+!&#xD;
+interface Ethernet6&#xD;
+   switchport mode trunk&#xD;
+   channel-group 22 mode on&#xD;
+!&#xD;
+interface Management1&#xD;
+  ! ip of ma1 configured on launch&#xD;
+!&#xD;
+interface Vlan1&#xD;
+   ip address 10.10.10.30/24&#xD;
+!&#xD;
+interface Vlan99&#xD;
+   ip address 172.23.99.2/30&#xD;
+!&#xD;
+no ip routing&#xD;
+!&#xD;
+mlag configuration&#xD;
+   domain-id mlag1&#xD;
+   local-interface Vlan99&#xD;
+   peer-address 172.23.99.1&#xD;
+   peer-link Port-Channel23&#xD;
+!&#xD;
+!&#xD;
+end&#xD;
+</entry>
+        </extensions>
+        <interface id="0" name="Ethernet1"/>
+        <interface id="1" name="Ethernet2"/>
+        <interface id="2" name="Ethernet3"/>
+        <interface id="3" name="Ethernet4"/>
+        <interface id="4" name="Ethernet5"/>
+        <interface id="5" name="Ethernet6"/>
+    </node>
+    <node name="veos-4" type="SIMPLE" subtype="vEOS" location="413,221">
+        <extensions>
+            <entry key="config" type="String">! device: vEOS-4 (vEOS, EOS-4.14.2F)&#xD;
+!&#xD;
+! boot system flash:/vEOS.swi&#xD;
+!&#xD;
+! AdvCompNet Lab 1 DCN Scenario 3&#xD;
+!&#xD;
+transceiver qsfp default-mode 4x10G&#xD;
+!&#xD;
+hostname vEOS-4&#xD;
+!&#xD;
+spanning-tree mode rapid-pvst&#xD;
+!&#xD;
+no aaa root&#xD;
+!&#xD;
+username admin privilege 15 role network-admin secret 5 $1$1.amWz6M$rWEBTalt7rkz5d8/8dbmU0&#xD;
+username cisco privilege 15 role network-admin secret 5 $1$rQS0W9wP$ZUzVG2XoGCCZCJopFp1aV/&#xD;
+!&#xD;
+interface Port-Channel21&#xD;
+   switchport mode trunk&#xD;
+!&#xD;
+interface Port-Channel22&#xD;
+   switchport mode trunk&#xD;
+!&#xD;
+interface Ethernet1&#xD;
+   switchport mode trunk&#xD;
+   channel-group 21 mode on&#xD;
+!&#xD;
+interface Ethernet2&#xD;
+   switchport mode trunk&#xD;
+   channel-group 22 mode on&#xD;
+!&#xD;
+interface Ethernet3&#xD;
+   switchport mode trunk&#xD;
+   channel-group 21 mode on&#xD;
+!&#xD;
+interface Ethernet4&#xD;
+   switchport mode trunk&#xD;
+   channel-group 22 mode on&#xD;
+!&#xD;
+interface Management1&#xD;
+  ! ip of ma1 configured on launch&#xD;
+!&#xD;
+interface Vlan1&#xD;
+   ip address 10.10.10.40/24&#xD;
+!&#xD;
+no ip routing&#xD;
+!&#xD;
+!&#xD;
+end&#xD;
+</entry>
+        </extensions>
+        <interface id="0" name="Ethernet1"/>
+        <interface id="1" name="Ethernet2"/>
+        <interface id="2" name="Ethernet3"/>
+        <interface id="3" name="Ethernet4"/>
+    </node>
+    <connection dst="/virl:topology/virl:node[1]/virl:interface[1]" src="/virl:topology/virl:node[2]/virl:interface[1]"/>
+    <connection dst="/virl:topology/virl:node[1]/virl:interface[2]" src="/virl:topology/virl:node[2]/virl:interface[2]"/>
+    <connection dst="/virl:topology/virl:node[3]/virl:interface[1]" src="/virl:topology/virl:node[2]/virl:interface[3]"/>
+    <connection dst="/virl:topology/virl:node[3]/virl:interface[2]" src="/virl:topology/virl:node[2]/virl:interface[4]"/>
+    <connection dst="/virl:topology/virl:node[4]/virl:interface[1]" src="/virl:topology/virl:node[2]/virl:interface[5]"/>
+    <connection dst="/virl:topology/virl:node[4]/virl:interface[2]" src="/virl:topology/virl:node[2]/virl:interface[6]"/>
+    <connection dst="/virl:topology/virl:node[3]/virl:interface[3]" src="/virl:topology/virl:node[1]/virl:interface[3]"/>
+    <connection dst="/virl:topology/virl:node[3]/virl:interface[4]" src="/virl:topology/virl:node[1]/virl:interface[4]"/>
+    <connection dst="/virl:topology/virl:node[3]/virl:interface[5]" src="/virl:topology/virl:node[4]/virl:interface[3]"/>
+    <connection dst="/virl:topology/virl:node[3]/virl:interface[6]" src="/virl:topology/virl:node[4]/virl:interface[4]"/>
+</topology>