router-on-a-stick example

Author: ipspace

VLAN/vlan-router-on-a-stick/README.md

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+# Router-on-a-Stick Connected to a VLAN Trunk
+
+This directory contains *netlab* topology file for a router-on-a-stick scenario with a two VLANs stretched across two switches and terminated on a router.
+
+![VLAN trunk topology](netlab-router-stick.png)
+
+After starting the lab, *h1* should be able to ping *h3*.
+
+## Changing Device Types
+
+This topology can be used with all network devices supporting VLAN configuration module and all virtualization providers supported by *netlab*:
+
+* To change all devices in the topology (apart from Linux hosts), use the `-d xxx` CLI argument
+* To change the switch device type, use `-s groups.switches.device=xxx` CLI argument
+* To change the router device type, use `-s groups.routers.device=xxx` CLI argument
+* To change the virtualization provider, use `-p` CLI argument.
+
+For example, to start the lab with Cisco IOSv devices, use:
+
+```
+netlab up -p libvirt -d iosv
+```

VLAN/vlan-router-on-a-stick/netlab-router-stick.png

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+provider: clab
+
+groups:
+  hosts:
+    members: [ h1, h3 ]
+    device: linux
+  switches:
+    members: [ s1, s2 ]
+    module: [ vlan ]
+    device: eos
+  routers:
+    members: [ ros ]
+    module: [ vlan ]
+    device: eos 
+
+vlans:
+  red:
+    mode: bridge
+  blue:
+    mode: bridge
+
+nodes:
+  h1:
+  h3:
+  s1:
+  s2:
+  ros:
+    vlan.mode: route
+
+links:
+- h1:
+  s1:
+    vlan.access: red
+- h3:
+  s1:
+    vlan.access: blue
+- s1:
+  s2:
+  vlan.trunk: [ red, blue ]
+- s2:
+  ros:
+  vlan.trunk: [ red, blue ]