Re: Questions on the i-d status

["Jim Fleming" <JimFleming@ameritech.net>]

----- Original Message ----- 
From: "Zhi-Wei Lin" <zwlin@lucent.com>
> > Is there an apparent liaison with ITU-T?
> 
> This draft was created as a result of liaisons with ITU-T (more
> specifically a result of receiving a liaison from ITU-T on additional
> features of ASON that needs to be added). The content of the draft will
> also be submitted to ITU-T's upcoming October experts meeting targetting
> G.7713.2 (signaling using RSVP-TE)
> 

Will the "Spare" bit be impacted ?

128-bit (AAAA) DNS Flag Day Format

[YMDD]:[16-bits for the outer header]:[IPv4]:[48-bit Persistent Address+Port]

The 16-bits for the outer header are...

1-bit to set the "Spare" bit [S]
1-bit to set the Don't Fragment (DF) bit [D]
2-bits to select 1 of 4 common TTL values (8, 32, 128, 256) [LL]
1-bit to set No Options Supported [O]
7-bits to set the Identification Field(dst) [FFFFFFF]
4-bits to set the TOS(dst) field [TTTT]

SDLL.OFFF.FFFF.TTTT

Given an AAAA DNS record, an IPv8 or IPv16 node can then specify,
a Flag Day [YMDD] to start using this particular record, an IPv4 address
for the site's gateway/firewall, 11 bits of extended IPv4++ addressing bits,
plus the spare bit can be controlled, the DF bit, and 4 common TTL values
can be recommended. Finally, the node can mark that it wants to not
support Options on the IPv4 encapsulating header. The node can also of
course include it's 48-bit persistent address and optional 16-bit Port value.

Note, there is only one "Spare" bit, it is not a [src][dst] arrangement.
It can be used to toggle traffic from one net layer to another, and not allow
traffic to flow between those layers. Traffic can be split at each side of the
legacy core IPv4 network, based on that bit.


Jim Fleming
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