Re: ATM Forum ATM Addresses for NHRP

Grenville Armitage <gja@thumper.bellcore.com> Mon, 21 August 1995 18:33 UTC

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To: "Andrew G. Malis" <malis@nexen.com>
cc: rolc@nexen.com, gja@thumper.bellcore.com
Subject: Re: ATM Forum ATM Addresses for NHRP
In-reply-to: Your message of Fri, 18 Aug 1995 17:03:50 -0400. <199508182103.RAA06099@phish.acton.timeplex.com>
Date: Mon, 21 Aug 1995 14:10:44 -0400
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	[..]

>>15	E.164 with NSAP format subaddress (ATM)
>>
>>However, the format of the encoded address also needs to be specified,
>>since it has two variable length portions.  I propose a
>>straightforward format:
>>
>>Length of E.164 portion (one octet)
>>E.164 portion
>>Length of NSAP format portion (one octet)
>>NSAP format portion
>>
>>Any comments before I send the request to IANA?

How about borrowing from ATMARP for the contents of address
family 15?

e.g.

  8 bits  Type & length of source ATM number
  8 bits  Type & length of source ATM subaddress
  qoctets  source ATM number
  roctets  source ATM subaddress

The T&L fields can be coded as per rfc1577, and infact this
would allow address family 15 to cover all three possible
ATM address formats. I'm currently working on the IPv6 ND-over-ATM
draft and this is the way the Source Link-layer Address and Target
Link-layer Address options will be coded for IPv6/ATM interfaces
(as AF numbers are not used in NS and NA messages).

gja