On Thu, 14 Apr 2005, Luke Youngblood wrote:
SONET simply means you are on a Sonet ring: Two redundant connections to the central office. If someone gets a little crazy with a backhoe your line is guaranteed to stay up (ask about SLAs, and make sure they will refund part of your monthly bill if you have an outage). That's why it costs over twice as much.
To take advantage of this redundancy, the entrance facilities to your building must not be part of a "collapsed ring" where both fiber pairs are in the same conduit/bundle. Quite often this is not done right. If it requires two backhoes to take it down, it requires two backhoes to build it. In other words, for SONET redundancy to be of value to you there need to be two physically separate fiber feeds to your location that remain physically separate throughout the ring. -- Jay Hennigan - CCIE #7880 - Network Administration - jay@west.net WestNet: Connecting you to the planet. 805 884-6323 WB6RDV NetLojix Communications, Inc. - http://www.netlojix.com/