This section details how to configure router-on-a-stick inter-VLAN routing. A newly bought switch will have dynamic desirable configured on every interfaces, the purpose for this is well-intended by cisco however it is a bad feature as far as security is concerned.Īssigned the same native vlan for all trunk ports. Router-on-a-Stick Scenario (4.2.1) In the previous section, three ways to create inter-VLAN routing were listed, and legacy inter-VLAN routing was detailed. Configure vtp domain name, password and put to server mode, so that when a new switch (especially used switch) is deployed into this network vlan information will not be wiped out by the “new” switch. Learn all the basics on vlans, trunking, 802.1q, native vlans, and inter vlan routing or routing on a stick for Cisco CCNA Studies. It is best not to leave vtp domain as null even if it is only one switch.
Interface IP-Address OK? Method Status ProtocolįastEthernet0/0 172.16.1.1 YES manual up upįastEthernet0/0.10 172.16.1.33 YES manual up upįastEthernet0/0.20 172.16.1.65 YES manual up upįastEthernet0/0.30 172.16.1.97 YES manual up upįastEthernet0/0.100 unassigned YES manual up upįastEthernet0/1 unassigned YES manual administratively down down Vlan itself is a subnet, the switch interfaces can be configured into logical subnets, information within the same vlan can be forwarded however if one vlan needs to send frames across other vlan a layer3 device is needed. Despite the fact that many people conceive it as that device that emits Wi-Fi signal, it is much more than that. It is recommended to define a native vlan to. One of the essential components of any network is the router. Shutdown unused ports and assigned them to native vlan.įor vlan to work no router or multi-layer switch is needed, the router is there for intervlan routing. VLAN: Router-on-a-stick by Cyrus Lok on Tuesday, Maat 2:07am Vlan 1 is default native vlan if native vlan has not been explicitly defined. Interfaces that have not been assigned to vlan will belong to vlan 1.
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It is recommended to define a native vlan to another unused(unassigned vlan) to prevent vlan hopping attack. 5.1.3.6 Packet Tracer-configuring router -on-a-stick inter Vlan routing instruction IG - Read online for free. Vlan 1 is default native vlan if native vlan has not been explicitly defined.