I have been reading “draft-ietf-alto-reqs-01.txt” and had some questions about the requirements here, particularly from an IPv4/IPv6 transition perspective.
2.2. ALTO terminology
o Host Group Descriptor: …This can be, for example, a single IP
address, an address prefix or address range that contains the
host(s), or an autonomous system (AS) number.
Q: must Host Group Descriptor: be able to include both IPv4 and IPv6 for a dual stack host ?
REQ. ARv01-8: The ALTO client protocol MUST support the host group
descriptor types "IPv4 address prefix" and "IPv6 address prefix."
They can be used to specify the IP address of one host, or an IP
address range (in CIDR notation), which contains all hosts in
question. It is also possible to specify a broader address range
(i.e., a shorter prefix length) than the intended group of hosts actually uses, in order to conceal their exact identity.
Q: Is it that “host group descriptor” is a set of "IPv4 address prefix" or "IPv6 address prefix." Or is it possible that a “host group descriptor” is a set containing both "IPv4 address prefix" and "IPv6 address prefix." ?
4. Host group descriptors
Q: What is the requirement text for section 4?
There are two options listed, the discussion Tuesday seemed to depreciate the AS option. Is it required to support both ? Is one optional ?
Q:AS’s have defined semantics. If it is not an AS are there requirements we should be stating about the creation/ deletion / definition of PIDs ? ( e.g. who can do it, when, etc.)
5. Rating criteria
Q: What is the requirement text for section 4?
Q:If the intention is to support dual (IPv4/IPv6) stack hosts, would there be a need to be able to use these rating criteria to express a preference between them ?
regards,
Steven Wright, MBA,PhD.
Strategic Standards
AT&T Network Architecture
phone (404) 499 7030
fax (404) 986 6141
email steven.wright.3 at att.com
*****
The information transmitted is intended only for the person or entity to which it is addressed and may contain confidential, proprietary, and/or privileged material. Any review, retransmission, dissemination or other use of, or taking of any action in reliance upon this information by persons or entities other than the intended recipient is prohibited. If you received this in error, please contact the sender and delete the material from all computers. GA621
Note Well: Messages sent to this mailing list are the opinions of the senders and do not imply endorsement by the IETF.