-----Original Message----- From: owner-nanog@merit.edu [mailto:owner-nanog@merit.edu]On Behalf Of Valdis.Kletnieks@vt.edu Sent: Thursday, April 14, 2005 4:35 PM To: Luke Youngblood Cc: 'Dan Lockwood'; nanog@merit.edu Subject: Re: Anyone familiar with the SBC product lingo?
On Thu, 14 Apr 2005 16:15:41 EDT, Luke Youngblood said:
SONET simply means you are on a Sonet ring: Two redundant
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
connections to they will refund
part of your monthly bill if you have an outage). That's why it costs over twice as much.
And remember to ask questions - make sure they've actually got the two connections routed differently. Remember that if the backhoe hits the conduit, *all* the fiber pairs go - and if both runs were in the same conduit, you're still dead....
(Anybody here *NOT* seen cases where the 2 fibers leave the building on opposite sides, go down different streets - and rejoin 2 miles down the way because there's only one convenient bridge/tunnel/etc over the river, or similar?)
It's rare that the pairs *don't leave the building in a lateral to the loop. Once you're into the metro, you're usually okay, but yes, you need to check. Most buildings only have 1 zero manhole so it's not feasible to get a second diversified lateral and it doesnt make sense to lease a second lateral on the same pathway. -M<\\