Re: [BEHAVE] Home NAPT44 - How many ports?

Michael Richardson <mcr+ietf@sandelman.ca> Wed, 05 June 2013 16:24 UTC

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From: Michael Richardson <mcr+ietf@sandelman.ca>
To: "v6ops@ietf.org" <v6ops@ietf.org>, "Reinaldo Penno (repenno)" <repenno@cisco.com>
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Date: Wed, 05 Jun 2013 12:23:35 -0400
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Cc: "Softwires-wg list \(softwires@ietf.org\)" <softwires@ietf.org>, "Poscic, Kristian \(Kristian\)" <kristian.poscic@alcatel-lucent.com>, "behave@ietf.org" <behave@ietf.org>, "Erik Kline \(ek@google.com\)" <ek@google.com>, "Rajiv Asati \(rajiva\)" <rajiva@cisco.com>
Subject: Re: [BEHAVE] Home NAPT44 - How many ports?
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>>>>> "repenno" == repenno  <Reinaldo> writes:
    repenno> On the other hand, as Rajiv captured,the number of
    repenno> UDP sessions can be much larger than the number of
    repenno> TCP. Because the way 
    repenno> dynamic webpages are constructed today, there are sometimes
    repenno> literally 100s 
    repenno> of DNS requests to download a single page.

If one is doing CGN, wouldn't it be reasonable to point customers' at 
a recursive DNS server with an interface inside the CGN?

This seems to also suggest that having a *caching* recursive DNS(SEC,
HOMENET+, mDNS+) server inside the customer router is also a big win.

-- 
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]   Michael Richardson, Sandelman Software Works        | network architect  [ 
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