nanog mailing list archives
Re: DC fiber cut: field report
From: Hal Murray <murray () pa dec com>
Date: Tue, 22 Jul 97 02:03:02 -0700
The story that I have heard is that some providers have 1 (one) protect circuit to cover many primary circuits... You loose too many primary and limit number of protect circuits can't get them all. --asp () partan com (Andrew Partan)
I'm not a TELCO wizard. The impression I get is that the protection circuit is intended to cover failures that take out a single circuit. For example, if you had 10 fibers in a system and a repeater or laser died, then only one of your fibers stops working. Fixing that with a protection circuit adds 1/10 to the system cost. (Maybe less if you have spare fibers in the ground.) Fixing it with SONET ring technology roughly doubles the system cost. A protection circuit doesn't help if your problem is backhoes.
Current thread:
- DC fiber cut: field report Stephen Balbach (Jul 17)
- Re: DC fiber cut: field report Subodh Nijsure (Jul 17)
- Re: DC fiber cut: field report Paul Trotter (Jul 18)
- Re: DC fiber cut: field report jamie (Jul 18)
- Re: DC fiber cut: field report bigfoot (Jul 18)
- <Possible follow-ups>
- RE: DC fiber cut: field report Dan Dale (Jul 18)
- Re: DC fiber cut: field report Owen DeLong (Jul 18)
- Re: DC fiber cut: field report Dave O'Shea (Jul 18)
- Re: DC fiber cut: field report Owen DeLong (Jul 18)
- Re: DC fiber cut: field report Andrew Partan (Jul 18)
- Re: DC fiber cut: field report Hal Murray (Jul 22)
- Re: DC fiber cut: field report Adrian J Bool (Jul 18)
- Re: DC fiber cut: field report Stephen Sprunk (Jul 18)
- Message not available
- Re: DC fiber cut: field report Jay R. Ashworth (Jul 18)
- Re: DC fiber cut: field report Stephen Balbach (Jul 18)
- Message not available
- Message not available
- Re: DC fiber cut: field report Jay R. Ashworth (Jul 20)
- Re: DC fiber cut: field report Owen DeLong (Jul 18)
- Re: DC fiber cut: field report Subodh Nijsure (Jul 17)