Re: ANSI T1.231 ?
Ken Chapman <KChapman@Argon.com> Thu, 11 June 1998 20:16 UTC
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Date: Thu, 11 Jun 1998 15:58:48 -0400
To: "C. M. Heard/VVNET, Inc." <heard@vvnet.com>, atommib@bellcore.com, trunk-mib@external.cisco.com
From: Ken Chapman <KChapman@Argon.com>
Subject: Re: ANSI T1.231 ?
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Ahhh! I see the light. So... "digital signal level" means signal *rate* AND *layer* AND *direction*. Your right, that is a lot of defaults! :^) Thanks for being so patient. Ken At 11:08 AM 6/11/98 -0700, C. M. Heard/VVNET, Inc. wrote: >On Thu, 11 Jun 1998, Ken Chapman wrote: >>>> So, let me ask it another way. If I have a box with a DS1 port, a DS2 >>>> port, an OC3 port and two (2) OC12 ports, I'll have five (5) separate >>>> threshold registers for the current SES errors (one for each port). >>>> How many default threshold registers do I need for SES 15 minute interval >>>> errors to satisfy ANS1 T1.231-1997 claues 9.1.5.2, paragragh 2? >[...] >>>[S]uppose that the SONET ports on your box are an OC3c and two OC12c's. >>> >>>[Then] if you support far end parameters, you will need to have >>>_at least_ 14 default thresholds for SES objects (2 for DS1, 2 for DS2, >>>5 for OC3, and 5 for OC12). If you support only near-end parameters >>>then you need _at least_ 8 default thresholds (1 for DS1, 1 for DS2, >>>3 for OC3, and 5 for OC12). More will be needed if your SONET ports >>>support non-concatenated payloads and/or VTs. >>> >> >>I'm sorry, but this sounds like you are talking about the THRESHOLD >>registers and not the DEFAULT threshold registers. If you REALLY mean >>DEFAULT (per T1.231 9.1.5.2), then what you are saying is that there >>is BOTH a THRESHOLD register AND a DEFAULT threshold for each of the things >>you mentioned above. I don't believe this is what was intended by >>T1.231 9.1.5.2. > >T1.231 9.1.5.2 requires that the thresholds shall be settable on a >_per-port_ basis by requesting a specific value or by requesting "default". > >Threshold values exist for each performance parameter, accumulation period, >digital signal level, _and port_. > >Corresponding default values exist for each parameter, accumulation period, >and digital signal level. They apply NE-wide and are not replicated per port. > >Thresholds and the defaults are indeed distinct. Typically there will be >more thresholds than defaults. > >For the example under discussion (15-minute near-end and far-end SES counts >for a box with one DS1 port, one DS2 port, one OC3c port, and two OC12c >ports) I get the following tally: > > Parameter Number of Defaults Number of Thresholds > --------- ------------------ -------------------- > > dsx1CurrentSESs 2 (DS1 & DS2) 2 (1 x DS1 & 1 x DS2) > > dsx1FarEndCurrentSESs 2 (DS1 & DS2) 2 (1 x DS1 & 1 x DS2) > > sonetSectionCurrentSESs 2 (OC3 & OC12) 3 (1 x OC3 & 2 x OC12) > > sonetLineCurrentSESs 2 (OC3 & OC12) 3 (1 x OC3 & 2 x OC12) > sonetFarEndLineCurrentSESs 2 (OC3 & OC12) 3 (1 x OC3 & 2 x OC12) > > sonetPathCurrentSESs 2 (STS3c & STS12c) 3 (1 x STS3c & 2 x STS12c) > sonetFarEndPathCurrentSESs 2 (STS3c & STS12c) 3 (1 x STS3c & 2 x STS12c) > > Totals 14 19 > >> >> Ken >> > >Mike >-- >C. M. Heard/VVNET, Inc. >heard@vvnet.com > > >
- Re: ANSI T1.231 ? Ken Chapman
- Re: ANSI T1.231 ? C. M. Heard/VVNET, Inc.
- Re: ANSI T1.231 ? Ken Chapman
- Re: ANSI T1.231 ? C. M. Heard/VVNET, Inc.
- Re: ANSI T1.231 ? Ken Chapman