Lessons from building large campus networks

Many moons ago I build large campus networks. Newer Ethernet technologies have arrived that changes the potential mechanism that these can be deployed in the enterprise and the data centre. Already Carrier Ethernet is making big inroads into service providers.

Building large campus networks is not just a question of cascading switches in an unplanned fashion. This laissez-faire method of building campus networks is fraught with issues, and the 800 pound gorillas seem to sell the idea that their devices can be rolled in and magically cure any issue. This might also be combined with some snake oil that layer 2 does not matter and can be discounted. Into this bubble and squeak, the security bunnies add their belief that all network devices should be firewalls. All devices should operate in a secure manner but this does not require firewall carpet bombing.

Read the full article on LinkedIn's Pulse here.

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