A New Internet-Draft is available from the on-line Internet-Drafts
directories.
Title : SRAM-based IP Forwarding Eliminates the Need
for Route Aggregation
Author(s) : R. Whittle
Filename : draft-whittle-sram-ip-forwarding-00.txt
Pages : 35
Date : 2007-3-28
I propose a simple, low-cost, low-power, Static RAM (SRAM) based
architecture for the Forwarding Information Base (FIB) function of
transit and border routers in the Default Free Zone (DFZ) of the
Internet. This will provide direct hardware forwarding irrespective
of the size of the "global BGP routing table", within the current
IPv4 convention of limiting advertised prefixes to no longer than
/24. Routers with this or a similar architecture provide the only
elegant hardware solution to the problem of route disaggregation,
which is unavoidable due to increasing numbers of ISPs and end-users
who need to advertise their prefixes on topologically diverse parts
of the network, for purposes including multihoming and traffic
engineering.
Router hardware limitations with respect to route disaggregation
could also be eliminated for IPv6 by adding further SRAMs, provided
the existing 2000::/3 global unicast allocations are reallocated to a
smaller range, for instance 2000::/10. This would provide for
Provider Independent /32 allocations to 4 million ISPs and multihomed
end-users. Each /32 assignment could be advertised as up to eight
/35 prefixes - each of which provides 8192 /48 user networks.
A URL for this Internet-Draft is:
http://www.ietf.org/internet-drafts/draft-whittle-sram-ip-forwarding-00.txt
To remove yourself from the I-D Announcement list, send a message to
i-d-announce-request@ietf.org with the word unsubscribe in the body of
the message.
You can also visit https://www1.ietf.org/mailman/listinfo/I-D-announce
to change your subscription settings.
Internet-Drafts are also available by anonymous FTP. Login with the
username "anonymous" and a password of your e-mail address. After
logging in, type "cd internet-drafts" and then
"get draft-whittle-sram-ip-forwarding-00.txt".
A list of Internet-Drafts directories can be found in
http://www.ietf.org/shadow.html
or ftp://ftp.ietf.org/ietf/1shadow-sites.txt
Internet-Drafts can also be obtained by e-mail.
Send a message to:
mailserv@ietf.org.
In the body type:
"FILE /internet-drafts/draft-whittle-sram-ip-forwarding-00.txt".
NOTE: The mail server at ietf.org can return the document in
MIME-encoded form by using the "mpack" utility. To use this
feature, insert the command "ENCODING mime" before the "FILE"
command. To decode the response(s), you will need "munpack" or
a MIME-compliant mail reader. Different MIME-compliant mail readers
exhibit different behavior, especially when dealing with
"multipart" MIME messages (i.e. documents which have been split
up into multiple messages), so check your local documentation on
how to manipulate these messages.
Below is the data which will enable a MIME compliant mail reader
implementation to automatically retrieve the ASCII version of the
Internet-Draft.
- <ftp://ftp.ietf.org/internet-drafts/draft-whittle-sram-ip-forwarding-00.txt>
-
_______________________________________________
I-D-Announce@ietf.org
https://www1.ietf.org/mailman/listinfo/i-d-announce
