LilesAllaire398

For CCNA and CCNP candidates, it is difficult never to laugh initially you hear the phrase "router on a stick." Let us face it, that's a fairly silly expression. This splendid newport locksmiths wiki has specific staggering suggestions for where to deal with this viewpoint. But as those people who have passed the CCNA and CCNP exams know, this can be a crucial test subject that you must know how exactly to configure and troubleshoot. Standard Cisco theory states that for hosts in numerous VLANs to communicate, a Layer 3 device should be involved to take care of the routing between the VLANs. That product is a router, and there are special factors that should be taken into account for both actual router it self and the setting you'll be creating. The modem will be attached to a switch using a FastEthernet port (or better). The router port cannot be a standard Ethernet port, because the ability will be needed by the router port to send and receive data at the same time. The setting of the program is where things get interesting. Let's say we have two VLANs which will be using router-on-a-stick to talk. Here is the VLAN information: VLAN 20: 20.20.20.0 /24 VLAN 40: 40.40.40.0 /24 The port on the switch which will be linked to the router's FastEthernet port must be in trunking method, and you must know the trunking protocol being used. Discover new resources on our related URL by visiting wholesale locksmiths yarraville. We'll choose the Cisco-proprietary ISL here. The physical FE port on the switch will not have an internet protocol address. The use of router-on-a-stick mandates the use of reasonable subinterfaces. While we don't have to utilize the VLAN numbers for the subinterface numbers, I have found this can help you keep consitently the interfaces right. One subinterface should be given an address in VLAN 20, and another may have an address in VLAN 40. If you know anything at all, you will maybe desire to read about compare newport locksmiths. After creating subinterfaces fast 0.20 and fast 0.40, the config seems like this: interface fastethernet0 Number ip interface FastEthernet 0.20 ip address 20.20.20.1 255.255.255.0 Software FastEthernet 0.40 Internet protocol address 40.40.40.1 255.255.255.0 Believe it or not, you are nearly done! Now we want the encapsulation statement under each subinterface. The statement must reflect both VLAN variety and the encapsulation type used. The config would seem like this:, when we are done Screen fastethernet0 Number ip Program FastEthernet 0.20 ip address 20.20.20.1 255.255.255.0 encapsulation isl 20 Screen FastEthernet 0.40 Internet protocol address 40.40.40.1 255.255.255.0 encapsulation isl 40 And that's it! Your hosts in VLAN 20 must now be able to communicate with hosts in VLAN 40, and vice versa. Several final troubleshooting factors - the most typical mistake with router-on-a-stick is to put the wrong vlan range in the encapsulation statement. Also, ensure you have configured the router's INTERNET protocol address in VLAN 20 whilst the default gateway for hosts in VLAN 20, and do the same for VLAN 40. I am hoping you've experienced this look at router-on-a-stick. It is still found in quite a few networks out there, while a chuckle may be got by the name out of you, and knowing how to manage and troubleshoot it will get you that much nearer to gaining your CCNA and CCNP.