Notice the two subinterfaces and both status show as up/up. *what that line means: dot1q is the trunking protocol, and 10 is the VLAN ID. Now we can configure the sub-interfaces on the router. By creating sub-interfaces on the router, the VLANs have a default gateway, enabling you to forward between VLANs.įirst we have to tell fa0/0 to not have use an IP address, and also to turn on the physical interface. In this step we can now start to complete our ROAS setup. So if more then 10 VLANS, best to you a 元 Switch. **Note you can add as many VLANS as you wish, but the more VLANS = More subinterfaces on your router which can burden your router. **Note that the link between SW1 and R1 is a trunk link. 4.2.8 Lab Configure Router-on-a-Stick Inter-VLAN Routing Answers Lab Configure Router-on-a-Stick Inter-VLAN Routing (Answers Version) Answers Note: Red font color or gray highlights indicate text that appears in the Answers copy only. R2 (config-route-map) set local-preference 150. R2 (config-route-map) match community 10. R2 (config) ip community-list 10 permit 100:999. In this how-to I will be using the following devices: To configure router R2 to match on specific community and change the prefixes preference: R2 configure terminal. So I will not be covering it in this how-to. You need a router to be able to route between the two VLANS or you can use a Layer 3 switch. Like having a VLAN for your Servers and also one for your client Data. What that means is simply routing withing your network between VLANS. Please leave your feedback in the comments at the bottom.Ī ROAS is used within a small to mediam sized organization that needs to implement inter-VLAN routing.
#Configure router on a stick cisco how to
This how-to is designed for basic users, but can be used as a guide by senior admins that just forgot how to set it up or what it is. In this how-to I will describe what the term Router on a Stick means and also how to configure it.
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