Information Technology Blog (Archive)

I am doing the lab,  CCNA Labs - Cisco for the Real World in   GNS3 and as of now I have reached the end of Phase 3 and I can say that this lab is amazing. I've configured familiar things which are on the CCNA scope like VLANS and Trunking, NAT, Static route. I also configured EtherChannel which is discussed in CCNA but I don't remember having configured one during labs on my Cisco Networking Academy class few years back. There are also major topics which are not in the CCNA scope like Inter-VLAN with L3 Switching and (drum roll) ... VPN configuration! In this lab, I am to setup the Branch Office network which has different VLANS, runs VOIP, with two APs one for Public and one for Private. The Private AP is connected to the internal private network while the Public AP can only connect to the Internet. There is a SERVER which can be accessed from the Internet and hosts should be able to access the Internet by passing through NAT. Then the Branch Office must be able to conn...

Wow, I am not aware it's almost a month since my last post here. I've been busy with other stuffs, sending out applications, getting interviewed, etc. I'm counting down the days towards graduation and hopefully my CCNA exam. After that, I think I can really focus all my energy in finding that networking job. I don't usually write a post unless I have an inspiration for it and for this post, I got the inspiration from the 8th nugget of  CCNA Labs – Cisco for the Real World.  I am going to setup Inter-VLAN not with router-on-a-stick but with Layer 3 switching.  This is the topology: The switches in the topology are actually 3725 routers with a 16-port EtherSwitch module. This is how you emulate switches in GNS3. For the IOS, I am using c3725-advipservicesk9-mz.124-3 which I have been using in my labs. I changed the icon so that I can really feel that I am configuring switches and not routers. There are 3 VLANS:  VLAN 10 on SW2, VLAN 20 on SW3 while VLAN 30 i...