Assignment progress

Posted: October 26, 2010 in Infrastructure Management and Disaster Recovery

The past week has been mainly spent working on the network topology for my assignment and swearing at Packet Tracer. The former I’ll come on to in a moment, but the latter…Packet Tracer crashed so many times that I started keeping count. Since Monday evening it has fatally crashed 63 times. Frustrating doesn’t even begin to describe it. EVERY action I perform is followed by Ctrl-S. Every.

But back in the land of network topologies, I’ve been working on emulating an internet-based WAN with some half decent security. So far I’ve settled for VPNs within GRE tunnels, effectively producing a secure international private network. The GRE tunnels are to allow OSPF to work its magic. And works it certainly does! Nice. I’m making a case for using a managed service (i.e. ‘leased lines’ in old parlance) for intra-site connectivity, although this isn’t specified in the brief.

The brief does say that the company’s public PAT link to the public internet is in the New York Data Centre. We have office in London and Paris, so in this day and age I suspect local PAT links are more realistic, but I’m not sure. I’ll have to research this. Incidentally, NAT/PAT config is rather easier to achieve than I had imagined. It took me no more than 20 minutes to research, configure, test and corroborate the success of my PAT configuration.

Finally I put some perfunctory encryption on passwords and enable secrets on my devices. Gets in the way a bit for development purposes, but it’s worth extra marks on the assignment, so if I don’t do it now I’ll likely forget and kick myself later. How many times will I have to type ‘cisco’ I wonder?

So now I have to decide: do I bother emulating some > Layer 3 stuff (explicitly not required) or just get on with writing it up? I dunno. Prolly make a little Wireless LAN for shits and giggles. I might think about VLANs too, but considering half of my cohort are yet to even read the assignment brief (apparently) I don’t think I need to worry too much ;)

Steve

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