Safest way is to refer to IEEE because it internally refers to the OIF. If you refer to OIF only, you will not cover any IEEE specifics. BR Gert Besuchen Sie uns auf der SPS/IPC/Drives vom 22. bis zum 24. November 2011 in Nürnberg, Halle 10, Stand 140. http://www.mesago.de/de/SPS/home.htm -------------------------------------------------------------------------- Absender ist HARTING Electronics GmbH & Co. KG; Sitz der Gesellschaft: Espelkamp; Registergericht: Bad Oeynhausen; Register-Nr.: HRA 5596; persönlich haftende Gesellschafterin: HARTING Electronics Management GmbH; Sitz der Komplementär-GmbH: Espelkamp; Registergericht der Komplementär-GmbH: Bad Oeynhausen; Register-Nr. der Komplementär-GmbH: HRB 8808; Geschäftsführer: Edgar-Peter Duening, Torsten Ratzmann, Dr. Alexander Rost -----Ursprüngliche Nachricht----- Von: si-list-bounce@xxxxxxxxxxxxx [mailto:si-list-bounce@xxxxxxxxxxxxx] Im Auftrag von selina lin Gesendet: Donnerstag, 10. November 2011 13:52 An: Vinu Arumugham Cc: Zabinski, Patrick; si-list@xxxxxxxxxxxxx Betreff: [SI-LIST] Re: about the standards of 25Gbps Thanks for all reply! In the 10Gbps channel eveluation, we always reference the IEEE802.3ap(10GBASE-KR). And it becomes the industry standard in the 10Gbps channel, no the CEI-11G-LR. So when we eveluation the 25Gbps channel, which one we will reference . May be they will come together in the future? Because in the 2nd generation, IEEE802.3ba will support 4*25G, no 10*10G. Is it 100GBASE-KR coming soon? 2011/11/10, Vinu Arumugham <vinu@xxxxxxxxx>: > IEEE 802.3ba XLAUI/CAUI do include electrical specifications. > OIF CEI is also working on 25/28G SR and VSR (short and very short > reach) specifications. > VSR is likely to be used on 100G modules configured with 4x25Gbps > interfaces. > > Thanks, > Vinu > > Zabinski, Patrick wrote: >> OIF's CEI-25G-LR defines the waveforms (voltages, eye openings, etc.) >> and the associated channel (return loss, insertion loss, ...) for the >> 25 Gb/s electrical signals. (does not define any optical signals) >> >> IEEE's 802.3ba defines the 40 Gb/s and 100 Gb/s Ethernet optical >> signals. (does not define the electrical signals; although it does >> define the "logical" interfaces for XLAUI and CAUI). >> >> At present, I believe there is no formal relationship between >> CEI-25-LR and 802.3ba. >> >> Where CEI-25-LR and 802.3ba can conceptually come together is at the >> Ethernet MAC or the optical module (called a "CFP"). However, I >> believe the existing CFP definition (http://www.cfp-msa.org) support >> 10 Gb/s SerDes signals (under the terms XLAUI and CAUI) and not 25 Gb/s >> signals. >> Future extensions to either 802.3ba or CFP MSA might support 25 Gb/s >> electrical signals, but believe they are unrelated as of today. >> >> If your study is specific to 25 Gb/s signals, then I suggest focusing >> on OIF's CEI-25G (and CEI-28G) standards. >> >> >>> I am studying the standards of the 25Gbps. I am trying explain >>> the difference of two standards that CEI-25G-LR and IEEE 802.3ba. >>> But i am puzzle about these. Can anyone tell me what is the >>> difference about the definition of these two standards. >>> >> >> ------------------------------------------------------------------ >> To unsubscribe from si-list: >> si-list-request@xxxxxxxxxxxxx with 'unsubscribe' in the Subject field >> >> or to administer your membership from a web page, go to: >> //www.freelists.org/webpage/si-list >> >> For help: >> si-list-request@xxxxxxxxxxxxx with 'help' in the Subject field >> >> >> List technical documents are available at: >> http://www.si-list.net >> >> List archives are viewable at: >> //www.freelists.org/archives/si-list >> >> Old (prior to June 6, 2001) list archives are viewable at: >> http://www.qsl.net/wb6tpu >> >> >> >> > > > > ------------------------------------------------------------------ > To unsubscribe from si-list: > si-list-request@xxxxxxxxxxxxx with 'unsubscribe' in the Subject field > > or to administer your membership from a web page, go to: > //www.freelists.org/webpage/si-list > > For help: > si-list-request@xxxxxxxxxxxxx with 'help' in the Subject field > > > List technical documents are available at: > http://www.si-list.net > > List archives are viewable at: > //www.freelists.org/archives/si-list > > Old (prior to June 6, 2001) list archives are viewable at: > http://www.qsl.net/wb6tpu > > > ------------------------------------------------------------------ To unsubscribe from si-list: si-list-request@xxxxxxxxxxxxx with 'unsubscribe' in the Subject field or to administer your membership from a web page, go to: //www.freelists.org/webpage/si-list For help: si-list-request@xxxxxxxxxxxxx with 'help' in the Subject field List technical documents are available at: http://www.si-list.net List archives are viewable at: //www.freelists.org/archives/si-list Old (prior to June 6, 2001) list archives are viewable at: http://www.qsl.net/wb6tpu ------------------------------------------------------------------ To unsubscribe from si-list: si-list-request@xxxxxxxxxxxxx with 'unsubscribe' in the Subject field or to administer your membership from a web page, go to: //www.freelists.org/webpage/si-list For help: si-list-request@xxxxxxxxxxxxx with 'help' in the Subject field List technical documents are available at: http://www.si-list.net List archives are viewable at: //www.freelists.org/archives/si-list Old (prior to June 6, 2001) list archives are viewable at: http://www.qsl.net/wb6tpu