<div dir="ltr">Would you expect Copper to come to your door in the NBN and still be a relevant technology in a few years to come?<div><br></div><div>Answers the question really...</div><div><br></div><div><br></div></div><div class="gmail_extra">
<br><br><div class="gmail_quote">On Fri, Oct 11, 2013 at 6:12 PM, Alastair Waddell <span dir="ltr"><<a href="mailto:awaddell@legion.com.au" target="_blank">awaddell@legion.com.au</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div style="word-wrap:break-word"><div>Hi AusNOG,</div><div><br></div><div>I expect there's strong opinions about this.</div><div><br></div><div>As I'm relocating DCs, its an opportunity to re-assess carrier interconnect terminations. </div>
<div><br></div><div>I've been reading how copper (CAT7) is still valid with 10Gb/s ethernet and at the same time how the transceiver is a point of latency where the optics must be converted to electrical signal.</div>
<div><br></div><div>I figure the transceiver is also a point of failure that's absent in copper although such an argument must surely factor the qualify of the cable/RJ and it's subsequent handling (but how hard can it be!)</div>
<div><br></div><div>So: </div><div><br></div><div>* Is copper a valid or even a 'better' choice to terminate carriers in the DC for 1Gb/s and beyond to 10Gb/s? *</div><div><br></div><div>PS KISS and risk mitigation rule in my little world. My fallback position is that fibre is still preferred as the 'safe' option especially wrt 10Gb/s. I just want to canvass all options. I don't want to repeat the exercise with the carriers at some future date if I can avoid it. It probably means, sub 1Gb/s top-of-rack kit today (looking at 4948/4900M or Juniper equivalents) and new kit at somewhere near 1Gb/s throughput with a preference to avoid carrier re-cabling. </div>
<div><br></div><div><br></div><div><span style="line-height:20px;text-align:left;color:rgb(51,51,51);font-size:small;font-family:Verdana,Geneva,Arial,'Lucida Sans',Helvetica,sans-serif">"With the release of the IEEE 802.3an standard, 10 Gb/s over balanced twisted-pair cabling (10GBASE-T) is the fastest growing and is expected to be the most widely adopted 10GbE option. "</span></div>
<div><span style="line-height:20px;text-align:left;color:rgb(51,51,51);font-size:small;font-family:Verdana,Geneva,Arial,'Lucida Sans',Helvetica,sans-serif"><br></span></div><div><span style="line-height:20px;text-align:left;color:rgb(51,51,51);font-size:small;font-family:Verdana,Geneva,Arial,'Lucida Sans',Helvetica,sans-serif">"</span><span style="line-height:20px;text-align:left;color:rgb(51,51,51);font-size:small;font-family:Verdana,Geneva,Arial,'Lucida Sans',Helvetica,sans-serif">At 1 Gb/s speeds, balanced twisted-pair compatible electronics offer better latency performance than fibre; however, considering latency at 10 Gb/s, currently fibre components perform better than balanced twisted-pair compatible 10GBASE-T electronics"</span></div>
<div><span style="line-height:20px;text-align:left;color:rgb(51,51,51);font-size:small;font-family:Verdana,Geneva,Arial,'Lucida Sans',Helvetica,sans-serif"><br></span></div><div><span style="line-height:20px;text-align:left;color:rgb(51,51,51);font-size:small;font-family:Verdana,Geneva,Arial,'Lucida Sans',Helvetica,sans-serif">"</span><span style="line-height:20px;text-align:left;color:rgb(51,51,51);font-size:small;font-family:Verdana,Geneva,Arial,'Lucida Sans',Helvetica,sans-serif">Since optical fibre electronics cannot autonegotiate, a move from 1000BASE-xx to 10GBASE-xx requires a hardware change. In contrast, both 1GbE and 10GbE can be supported by 10GBASE-T balanced twisted-pair compatible equipment."</span></div>
<div><br></div><div><a href="http://www.siemon.com/uk/white_papers/08-07-10-copper-fiber-options-data-center.asp" target="_blank">http://www.siemon.com/uk/white_papers/08-07-10-copper-fiber-options-data-center.asp</a></div>
<div><br></div><div><br></div><div><br></div><div><br></div><div>
<div style="text-indent:0px;letter-spacing:normal;font-variant:normal;text-align:-webkit-auto;font-style:normal;font-weight:normal;line-height:normal;text-transform:none;font-size:medium;white-space:normal;font-family:Helvetica;word-wrap:break-word;word-spacing:0px">
<div>Regards,</div><span class="HOEnZb"><font color="#888888"><div>-- </div><div>Alastair Waddell<br>Legion Internet<br>Australia</div></font></span></div>
</div>
<br></div><br>_______________________________________________<br>
AusNOG mailing list<br>
<a href="mailto:AusNOG@lists.ausnog.net">AusNOG@lists.ausnog.net</a><br>
<a href="http://lists.ausnog.net/mailman/listinfo/ausnog" target="_blank">http://lists.ausnog.net/mailman/listinfo/ausnog</a><br>
<br></blockquote></div><br></div>