The SD-WAN Working Group, part of the Open Networking User Group (ONUG), brought together end…
Can You Hear Me Now?
Is this how you test your network?
Most of us remember the omnipresent Verizon commercials and the guy testing the network by holding a cell phone and asking the person on the other end of the call “Can you hear me now?”…. Stepping a few yards forward, and repeating. But I doubt any of us really thought that was actually Verizon’s testing method.
As I speak to folks about how their networking gear keeps track of whether or not their links are working properly, often the answer is something remarkably close to the man with the cell phone saying, “Can you hear me now?”
Sending a probe down a connection to see if it comes back seems to be as sophisticated as it gets for many. The link worked for the probe, but what about 2 seconds later? What about 2 minutes later? What about next week? You see… just because the mobile phone network worked when the dude was standing there with the camera crew last week, doesn’t mean it’s still working now.
Isn’t there a better way?
If you had a way of making sure every call, every connection, every session stayed active on a link until the end points completed their business wouldn’t that be a superior solution? If you had a way to make sure every packet arrived, wouldn’t you use it? If you had a way to measure the efficiency of each path that the packet traveled upon, in real time, wouldn’t that be powerful?
To fully realize the benefits listed above, you need a WAN Virtualization or SD-WAN solution that pays attention to every packet and gives you a current, up to the millisecond, view of how each and every link in the WAN is performing and how it is performing in each direction…. The most efficient way to do that is to have each packet’s arrival update that information to the WAN appliances in real time.
Using the occasional probe, or a dude with a cell phone …. Not so much.
Can you hear me now?
Categories: Software Defined WAN (SD-WAN)