Managing Tables in our new Virtual Reality

Networking really comes down to the art of managing tables and rules. In traditional networks, MAC addresses are inserted into tables using standard learning techniques.  When packets arrive, if the source MAC address is not known, it is added to the MAC forwarding table for that VLAN with the ingress interface as its destination. If […]

Red Sox, pumpkins and packet encapsulation

[This is not really about the Red Sox or pumpkins this Halloween, but how could I not use those in the title? Go Red Sox] I left an awful teaser at the end of my article last week. In Brent Salisbury's original article that triggered some of these additional virtualization thoughts, he articulated two very clear […]

Network virtualization: Size does matter

A little while ago I wrote about the differences between routing and switching, or probably more the difference between ethernet and IP forwarding. Then focus of that article was very much on the differences between the two from a forwarding hardware perspective. This article last week from Brent Salisbury triggered a bunch of additional thoughts around […]