Hopefully none of these customers had service and protect ckts that went down... I would be pissed as a ceo if that happen to my company. Hopefully level3's new service offering is 1...@percent redundant as stated
The new service offerings include: - Protected Wavelengths: Level 3 now provides automatic protection-switching to a dedicated diversely routed wavelength in the event of a network failure. The protection switch, fully automated and managed by Level 3, happens at switching speeds approaching SONET restoration times. The single interface to the customer requires no additional capital cost for customer optical ports, and the diverse restoration path is fixed and fully known to the customer. These features allow customers to achieve fast restoration with predictable performance in their network without adding significant cost and routing complexity. - ------Original Message------ From: Wallace Keith To: nanog@nanog.org Subject: Diversity - was: Fiber cut in SF area Sent: Apr 14, 2009 7:06 PM -----Original Message----- From: Roy [mailto:r.engehau...@gmail.com] Sent: Tuesday, April 14, 2009 6:43 PM To: Gino Villarini Cc: nanog@nanog.org Subject: Re: Fiber cut in SF area Gino Villarini wrote: > Here in my area most of business outfits that require maximum > availability of Internet or WAN conenctions have implemented dual > connections from dual providers, most with a fiber/copper main and a > fixed wireless backup. This trend goes from banks to Mcdonalds > > > Gino A. Villarini > g...@aeronetpr.com > Aeronet Wireless Broadband Corp. > tel 787.273.4143 fax 787.273.4145 > > >A large company in the affected area had a T3 supplied by AT&T and a >wireless link to another ISP that was fed by two metro-ethernet links by >companies other than AT&T. >All three uplinks were lost. So much for having backups, This just goes to emphasize that when creating a diversity or backup scenario, you need to get full disclosure from Provider B that they do not use Provider A's facilities, including shared sheath, duct, etc in any way. Also, there is the need to avoid the same telco buildings, regen huts, etc. and in some cases, entire cities. Any telecom/datacom manager who has done their homework should be able to map out their paths back to critical diverse infrastructure. -Keith Sent on the Now Network� from my Sprint® BlackBerry
