<div dir="ltr"><div><div><div>Dear Barua Da,<br><br></div>Thanks for the comment and interest about the CDN. I'm sure the BDNOG Program Committee will consider your proposal.<br></div><br></div>- with regards<br><br>SIMON<br>
<div><div><br><div><br></div></div></div></div><div class="gmail_extra"><br><br><div class="gmail_quote">On Sat, Feb 8, 2014 at 1:42 PM, Aniruddha Barua <span dir="ltr"><<a href="mailto:aniruddha.barua@colbd.com" target="_blank">aniruddha.barua@colbd.com</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div bgcolor="#ffffff">
<font>Dear Simon bhai,
<br>
<br>Thanks for your email.
<br>
<br>I am only interested in the networking part of these CDNs, not the content caching & serving part.
<br>
<br>As a Networking Professional, Enthusiast and a Member of bdNOG Community, I'd be happy to see any one or two (or if possible all) of them in bdNOG1, :-). But Google/YouTube one consumes(ISP Point of view)/saves(IIG Point of view) the lion's share of bandwidth as I have seen. Let's put the proposal before the Program Committee. If I remember correctly, Roman bhai had told me that there will be someone from Google in bdNOG1.
<br>
<br>With thanks and best regards,
<br><div class="">
<br>ANIRUDDHA BARUA
<br>
Email: <a href="mailto:aniruddha.barua@colbd.com" target="_blank">aniruddha.barua@colbd.com</a>, <a href="mailto:cto@colbd.com" target="_blank">cto@colbd.com</a>
<br>
<br>
<br><b>---------- Original Message
-----------</b>
<br></div><div><div class="h5">
From: "Simon Sohel Baroi / IIG-ITC / Sr.Manager / <a href="tel:01678618243" value="+8801678618243" target="_blank">01678618243</a> /"
<<a href="mailto:simon.baroi@fiberathome.net" target="_blank">simon.baroi@fiberathome.net</a>>
<br>
To: Muhammad Moinur Rahman <<a href="mailto:5u623l20@gmail.com" target="_blank">5u623l20@gmail.com</a>>
<br>
Cc: Aniruddha Barua <<a href="mailto:aniruddha.barua@colbd.com" target="_blank">aniruddha.barua@colbd.com</a>>, "<a href="mailto:nog@bdnog.org" target="_blank">nog@bdnog.org</a>"
<<a href="mailto:nog@bdnog.org" target="_blank">nog@bdnog.org</a>>
<br>
Sent: Sat, 8 Feb 2014 12:42:56 +0600
<br>
Subject: Re: [bdNOG] How does Google select their Cache Engine IP nearest to the
request sender?
<br>
<br>> Dear Barua da,
<br>>
<br>> Lets do one thing. I can talk with
Google/Akamai/Limelight, that if they have any good slides for their Cache
working principle.
<br>>
<br>> As we are having our 1st bdNOG Conference,
may be they will be interested to give us a presentation ( conference/tutorial )
about how its working. There are some proprietary thing in the cache, which
Google, Akamai, Limielight and all the CDN operators can tell or show us. But
without that all the principles are same. I found google one is very
interesting.
<br>>
<br>> Please let me know what do you thing. Should we include them
in the bdNOG Conference ?
<br>>
<br>> Let us know your thoughts.
<br>>
<br>> - SIMON
<br>>
<br>> On Wed, Feb 5, 2014 at 4:24 PM, Muhammad
Moinur Rahman <span dir="ltr"><<a href="mailto:5u623l20@gmail.com" target="_blank">5u623l20@gmail.com</a>></span> wrote:
<br>> <blockquote style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex" class="gmail_quote">
<br>>
<br>> Hi Aniruddha Da,
<br>>
<br>> Yeap that's a problem.
At first I planned to do it using NO_EXPORT. But the problem is we have to peer
with the node using a different ASN rather than our own. So it doesn't work.
However for your case with us ping me outside the list. I will send you my BGP
communities. Which will help you a
bit.
<br>>
<br>> BR,
<br>>
Moin
<br>>
<br>> On Tue, Feb 4, 2014 at 10:00 PM, Aniruddha Barua <span dir="ltr"><<a href="mailto:aniruddha.barua@colbd.com" target="_blank">aniruddha.barua@colbd.com</a>></span> wrote:
<br>>
<blockquote style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex" class="gmail_quote">
<br>>
<font>Dear Moin
bhai,
<br>>
<br>> Thanks for your reply. I understand the NDA part. I don't
want anyone to disclose
anything.
<br>>
<br>> But many things have become clearer to me now. From an end
ISP's point of view, to better utilize BGP partial or full routes or even to
advertise larger prefixes for fail-over function, all our upstream IIGs should
have Cache nodes directly connected to their ASes. Otherwise traffic becomes
unbalanced for us, as far as Google/YouTube and other cache based services are
concerned. Google cache nodes should look at BGP attributes too, at least
AS_PATH lengths. Is there anyone from Google in this list?
;-)
<br>>
<br>> Best regards to
all,
<br>>
<br>> ANIRUDDHA BARUA
<br>>
Email: <a href="mailto:aniruddha.barua@colbd.com" target="_blank">aniruddha.barua@colbd.com</a>, <a href="mailto:cto@colbd.com" target="_blank">cto@colbd.com</a>
<br>>
<br>> <b>---------- Original Message
-----------</b>
<br>>
From: Muhammad Moinur Rahman <<a href="mailto:5u623l20@gmail.com" target="_blank">5u623l20@gmail.com</a>>
<br>>
To: Aniruddha Barua <<a href="mailto:aniruddha.barua@colbd.com" target="_blank">aniruddha.barua@colbd.com</a>>
<br>>
Cc: "<a href="mailto:nog@bdnog.org" target="_blank">nog@bdnog.org</a>"
<<a href="mailto:nog@bdnog.org" target="_blank">nog@bdnog.org</a>>
<br>>
Sent: Tue, 4 Feb 2014 18:32:03 +0600
<br>>
Subject: Re: [bdNOG] How does Google select their Cache Engine IP nearest to the
request sender?
<br>>
<br>> > Hi Aniruddha
Da,
<br>> >
<br>> > Due to NDA I cannot disclose much.
But so far my work they emphasize on advertising the prefix of your
resolver.
<br>> >
<br>> > Let's say you are using a resolver A.B.C.D. This prefix or
a longer version is advertised to Cache Node. When you are querying for one of
their records they somehow check if your resolver is advertised towards any of
the Cache node's BGP feed. If it finds it in any of their Nodes they reply
with an IP address from that block otherwise they reply from their block. They
do not check any other BGP attributes just the availability of the
prefix.
<br>> >
<br>> > Hope this meets your thirst. If not let me know. Maybe next
week we can meet somewhere. I will be in CTG to deploy the same for you.
3:)
<br>> >
<br>> >
BR,
<br>> >
Moin
<br>> >
<br>> > On Tue, Feb 4, 2014 at 5:17 PM, Aniruddha Barua <span dir="ltr"><<a href="mailto:aniruddha.barua@colbd.com" target="_blank">aniruddha.barua@colbd.com</a>></span>
wrote:
<br>> >
<blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">Hello
Everyone,
<br>> >
<br>> >
I have a question to the bdNOG community. I believe someone knows the
answer.
<br>> >
<br>> >
Question is "How does Google select their Cache Engine IP nearest to the
request
sender?"
<br>> >
<br>> >
No doubt, they look at BGP tables for ASN of request sender but I want to know
more specifics
like,
<br>> >
do they look at BGP attributes, if yes then what BGP attributes, any algorithm
other than BGP
etc.
<br>> >
Thanks in
advance.
<br>> >
<br>> >
Regards,
<br>> >
<br>> >
ANIRUDDHA
BARUA
<br>> >
Email: <a href="mailto:aniruddha.barua@colbd.com" target="_blank">aniruddha.barua@colbd.com</a>,
<a href="mailto:cto@colbd.com" target="_blank">cto@colbd.com</a>
<br>> >
<br>> >
_______________________________________________
<br>> >
nog mailing
list
<br>> >
<a href="mailto:nog@bdnog.org" target="_blank">nog@bdnog.org</a>
<br>> >
<a href="http://mailman.bdnog.org/mailman/listinfo/nog" target="_blank">http://mailman.bdnog.org/mailman/listinfo/nog</a>
<br>> >
</blockquote>
<br>> <b>------- End of Original Message
-------</b>
<br>>
</font>
</blockquote>
<br>>
<br>>
_______________________________________________
<br>>
nog mailing list
<br>>
<a href="mailto:nog@bdnog.org" target="_blank">nog@bdnog.org</a>
<br>>
<a href="http://mailman.bdnog.org/mailman/listinfo/nog" target="_blank">http://mailman.bdnog.org/mailman/listinfo/nog</a>
<br>>
<br>> </blockquote>
<br>>
<br clear="all">
<br>> --
<br>> <font style="font-family:tahoma,sans-serif" size="1"><b>Simon Sohel Baroi </b>| Sr.
Manager, Technology | </font><font style="font-family:tahoma,sans-serif" size="1">PICO | ITC - </font><span style="font-family:tahoma,sans-serif;font-size:x-small">IIG |</span><font style="font-family:tahoma,sans-serif" size="1">
<br>>
</font><font style="font-family:tahoma,sans-serif" size="1">Cell :
<a href="tel:%2B880-1678-618243" value="+8801678618243" target="_blank">+880-1678-618243</a>, <a href="tel:%2B880-181-7022207" value="+8801817022207" target="_blank">+880-181-7022207</a> | Desk : <a href="tel:%2B880-9666776677%20Ext-1031" value="+8809666776677" target="_blank">+880-9666776677 Ext-1031</a>
| </font>
<br>> <font style="font-family:tahoma,sans-serif" size="1">Mail :
<a href="mailto:simon.baroi@fiberathome.net" target="_blank">simon.baroi@pico.net.bd</a> | Skype : tx.fttx |
<br>>
<br>> </font><font style="color:rgb(0,102,0)" size="1"><i><b><font face="Helvetica"><span style="font-family:Tahoma;font-style:normal;font-weight:normal">
<br>>
<br>> <b><i>R</i></b><b><i>educe. Reuse. Recycle. Respect. It's the
little things that really can make a difference.
<br>>
</i></b>
</span></font></b></i></font>
<br><b>------- End of Original Message
-------</b>
<br>
</div></div></font>
</div>
<br>_______________________________________________<br>
nog mailing list<br>
<a href="mailto:nog@bdnog.org">nog@bdnog.org</a><br>
<a href="http://mailman.bdnog.org/mailman/listinfo/nog" target="_blank">http://mailman.bdnog.org/mailman/listinfo/nog</a><br>
<br></blockquote></div><br><br clear="all"><br>-- <br><font style="font-family:tahoma,sans-serif" size="1"><b>Simon Sohel Baroi </b>| Sr. Manager, Technology | </font><font style="font-family:tahoma,sans-serif" size="1">PICO | ITC - </font><span style="font-family:tahoma,sans-serif;font-size:x-small">IIG |</span><font style="font-family:tahoma,sans-serif" size="1"><br>
</font><font style="font-family:tahoma,sans-serif" size="1">Cell : +880-1678-618243, +880-181-7022207 | Desk : +880-9666776677 Ext-1031 | </font><div><font style="font-family:tahoma,sans-serif" size="1">Mail : <a href="mailto:simon.baroi@fiberathome.net" target="_blank">simon.baroi@pico.net.bd</a> | Skype : tx.fttx |<br>
<br></font><font style="color:rgb(0,102,0)" size="1"><i><b><font face="Helvetica"><span style="font-family:Tahoma;font-style:normal;font-weight:normal"><div>
<div style="margin-top:0px;margin-bottom:0px"><b><i>R</i></b><b><i>educe. Reuse. Recycle. Respect. It's the little things that really can make a difference.<br></i></b></div>
</div></span></font></b></i></font></div>
</div>