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--- virtualization:containerlab [2023/04/12 17:09] – jotasandoku
+++ virtualization:containerlab [2025/09/04 21:48] (current) – jotasandoku
@@ Line 33: / Line 33: @@
   sudo containerlab destroy -t clab.yml
+! **SUBSEQUENT USES:**
   sudo containerlab deploy -t clab.yml
   ansible-playbook -i hosts.yml pusheos.yml
@@ Line 138: / Line 138: @@
 ----
+TCPDUMP IN CONTAINERLAB:
+\\
+  * Official guide: [[https://containerlab.dev/manual/wireshark/]]
+  * netlab wrapper: ''netlab capture rtr eth1 icmp -l'' / ''netlab capture rtr eth1 -U -s0 -w - | sudo wireshark -k -i -''
+    * more info : [[https://netlab.tools/netlab/capture/]]
+  * We run tcpdump over the cname of the container in question:
+  sudo containerlab inspect --all    # find the name (cname)
+  docker exec clab-simple_ipv4-rtr ip a | grep  '^[^[:space:]]    # finds the interfaces for the cname clab-simple..
+  ssh $containerlab_host_address "ip netns exec $lab_node_name tcpdump -nni $if_name"
+  # Enable non-sudo users to capture: https://askubuntu.com/questions/348712/there-are-no-interfaces-on-which-a-capture-can-be-done
+  ssh ubuntu@143.47.236.251 "sudo ip netns exec clab-vxlan1-s1 tcpdump -U -nni et1 -w -" | wireshark -k -i -
+----
+** SAVE WORK AND COME BACK **
+# from your lab folder
+  netlab collect -o saved    # important, folder is not called 'saved' otherwise overwritten
+  netlab down --cleanup
+  netlab up
+  netlab config saved
+----
+** INSPECT LAB WITH NETLAB **
+  netlab report addressing
+  netlab report wiring
+  netlab show reports

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