Not talking about ATM, PPP, HDLC, Frame Relay WAN. Ethernet is the new WAN.
Sometimes you need an easy to use encryption, which is just added to a Link between two devices – and you don’t want to invent IPSec-VPNs which at least add complexity to the design.
MACsec solved this problem bringing absolutely transparent encryption, but – since MACsec-Sessions are sent to a „link-local“ ethernet destination address (01-80-c2-00-00-03) they aren’t allowed to be forwarded by any device. A typical „non-dark-fiber“ WAN-Link can’t be encrypted using MACsec.
What’s not good with the product name „UCS Director“? It needs explanation!
Nobody in this world could guess it’s feature-set, everybody thinks it’s some additional umbrella-management on top of the UCS-Manager or UCS Central.
„Unified Infrastructure Controller“ would fit much better, since the UCSD not only automates UCS-Components, but the whole Datacenter (and more) including LAN/SAN-Switches, Firewalls and the virtualization environment like vSphere or Hyper-V.
Long time ago, there was a networking protocol called ipv4 which drove the internet and everybody was happy.
Not everybody, unfortunately – my fridge for example had no access to the internet and was not able to order food when the forecast predicted low-food level. My washing machine couldn’t send an email when finishing work, it wasn’t possible for my car to have a facebook account to like empty highways without speed limit…
These issues have been solved with ipv6, ip next generation, the new foundation of the internet.
The broadcast-concept left the stage, too.
Never miss the broadcast – catch the frame with destination address „all-ones“!