Re: QSPEC Questions
"Hannes Tschofenig" <[email protected]>
| Newsgroups | gmane.ietf.nsis |
|---|---|
| Message-ID | <[email protected]> |
Al, shouldn't we provide that type of context in the document as well? They document does not appear self contained enough so that a regular reader can understand it easily. Ciao Hannes >-----Original Message----- >From: Al Morton [mailto:[email protected]] >Sent: 06 November, 2008 19:44 >To: Xiaoming Fu; Hannes Tschofenig >Cc: [email protected] >Subject: Re: [NSIS] QSPEC Questions > >At 09:24 PM 11/1/2008, Xiaoming Fu wrote: >>Hannes Tschofenig wrote: >>... >>>* Where does the description for <Path Jitter>, <Path PLR> and <Path >>>PER> come from? There is no reference to another RFC given >in these sections. >> >>QSPEC ID suggested packet jitter is based on [rfc3393], but I am not >>sure whether (nominal) jitter values are directly addable >across multiple hops. > >It's possible to accumulate Jitter values, if they're measured >and specified in the appropriate form. >The more detailed references include Rec Y.1541, >http://tools.ietf.org/html/draft-ietf-ippm-spatial-composition-07 >http://tools.ietf.org/html/draft-ietf-ippm-delay-var-as-01 >>Also, is PLR or PER directly addable (or just a multiplication)? > >see the first two refs above. >Al >