Shishio-san
Thanks,
In response to your questions,
http://tools.ietf.org/html/draft-nishizuka-cgn-deployment-considerations-00#section-4
Figure 1: The number of sessions of applications.
Q.Which browser did you use in your investigation?
We used the latest Chrome and FireFox.
Our investigation shows that the average number of session of active subscriber
is 400.
Q.Can you show more detail information? The investigation in the commercial
network? or test bed?
We captured traffic of our normal activities. So the answer is "in test
bed".
In a commercial network, the common people activities could be somehow
different from researchers:)
However, the existing study is showing that our assumption is not extreme.
http://www.wand.net.nz/~salcock/someisp/flow_counting/result_page.html
http://tools.ietf.org/html/draft-nishizuka-cgn-deployment-considerations-00#section-5.2
(a) was estimated to be 25% at the value during the busy hour of traffic (21:00
pm to 1:00am).
Q.Does the estimation come from your investigation on real network? or erlang
and someting?
What kind of network?Wireless or Wireline?IPv6 enabled network?
It's from investigation on the real ISP network.
It's mainly wireline network and partly IPv6-enabled.
http://tools.ietf.org/html/draft-nishizuka-cgn-deployment-considerations-00#section-6.1
Q.Is current RFC not enough to measure CGN performance?
RFC 3511 Benchmarking Methodology for Firewall Performance
http://tools.ietf.org/html/rfc3511
RFC6645 IP Flow Information Accounting and Export Benchmarking Methodology
http://tools.ietf.org/html/rfc6645
Maybe not, though I've not closely read them.
As I described in the draft, the CGN performance is limited by the
combination of throughput, Max Concurrent Sessions and Connection Per Sec.
Thus we used the test bed(StarBED) with powerful calculation power to
emulate all subscribers.
The assumption of the average subscriber was important for setting up
the environment.
Best regards,
kaname
(2013/04/05 16:02), Shishio Tsuchiya wrote:
I read this documents.
I think this draft would be useful to consider CGP deployment for service
providers.
And I have question.
http://tools.ietf.org/html/draft-nishizuka-cgn-deployment-considerations-00#section-4
Figure 1: The number of sessions of applications.
Q.Which browser did you use in your investigation?
Our investigation shows that the average number of session of active subscriber
is 400.
Q.Can you show more detail information? The investigation in the commercial
network? or test bed?
http://tools.ietf.org/html/draft-nishizuka-cgn-deployment-considerations-00#section-5.2
(a) was estimated to be 25% at the value during the busy hour of traffic (21:00
pm to 1:00am).
Q.Does the estimation come from your investigation on real network? or erlang
and someting?
What kind of network?Wireless or Wireline?IPv6 enabled network?
http://tools.ietf.org/html/draft-nishizuka-cgn-deployment-considerations-00#section-6.1
Q.Is current RFC not enough to measure CGN performance?
RFC 3511 Benchmarking Methodology for Firewall Performance
http://tools.ietf.org/html/rfc3511
RFC6645 IP Flow Information Accounting and Export Benchmarking Methodology
http://tools.ietf.org/html/rfc6645
Regards,
-Shishio
-------- Original Message --------
Subject: I-D Action: draft-nishizuka-cgn-deployment-considerations-00.txt
Date: Thu, 28 Mar 2013 07:12:24 -0700
From: <[email protected]>
Reply-To: <[email protected]>
To: <[email protected]>
A New Internet-Draft is available from the on-line Internet-Drafts directories.
Title : Carrier-Grade-NAT (CGN) Deployment Considerations.
Author(s) : Kaname Nishizuka
Filename : draft-nishizuka-cgn-deployment-considerations-00.txt
Pages : 16
Date : 2013-03-28
Abstract:
This document provides deployment considerations for Carrier-Grade-
NAT (CGN) based on the verification result include the investigation
of the number of sessions of applications. The verification was
conducted in StarBED which is one of the largest scale network
experiment environment in Japan. A million of subscribers was
emulated and it revealed the realistic behavior of CGN.
The IETF datatracker status page for this draft is:
https://datatracker.ietf.org/doc/draft-nishizuka-cgn-deployment-considerations
There's also a htmlized version available at:
http://tools.ietf.org/html/draft-nishizuka-cgn-deployment-considerations-00
Internet-Drafts are also available by anonymous FTP at:
ftp://ftp.ietf.org/internet-drafts/
_______________________________________________
I-D-Announce mailing list
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Internet-Draft directories: http://www.ietf.org/shadow.html
or ftp://ftp.ietf.org/ietf/1shadow-sites.txt
.
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--
----
Kaname Nishizuka
Innovative Architecture Center
NTT Communications Corporation
+81-50-3812-4704
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