Hi again, below... El 06/10/2006, a las 10:43, Deguang Le escribió:
Hi all, A slight comments on draft-ietf-shim6-proto-05.txt -Page45When the Element length equals one, then the element consists of onlya one octet flags field. The currently defined set of flags are: BROKEN: 0x01 TEMPORARY: 0x02 The intent of TEMPORARY is to allow the distinction between more stable addresses and less stable addresses when shim6 is combined with IP mobility, when we might have more stable home locators, and less stable care-of-locators.In above statement and context in this draft, no detailed explanation for "BROKEN" and its usage. I think it is better if there is some accurate explanations for BROKEN and how it is used in this Locator Preference option.
agreebasically the usage of the BROKEN flag is intended for when the host knows thanks to local information that a locator is temporarily unavailbale/unreachable, so it can mark it as such, so that the peer doesn't use it for communicating.
As mentioned in the other email, another option would be to remove from the locator set using a Update message, but i guess this option is cheaper in terms of processing (cheaper security checks)
Besides, the above explanation for "TEMPORARY" is still not clear for me. What are the more stable addresses and what are the less stable addresses?
the goal here is that if the host knows that there are some addresses that may change rapidly, it can mark them as such, so that the peer use more aggresive failure detection mechanisms on that address.
In the case of MIP a HoA is a more stable address and a CoA is a less stable address
I think it is better if this draft could provides some special situations about them. Morever, I also can not understand how the TEMPORARY can be used to distinguish them.
The usage would be that it will include the Temporary flag when conveying CoA information in the locator set.
Do you think that additional text is required to explain this? Regards, marcelo
Cheers, DeguangGeoff Huston schrieb:Hi,This note starts the WG Last Call for comments on the three "base" Shim6 documents:draft-ietf-shim6-proto-05.txt "Level 3 multihoming shim protocol"draft-ietf-shim6-hba-01 "Hash Based Addresses (HBA)"draft-ietf-shim6-failure-detection-06 "Failure Detection and Locator Pair Exploration Protocol for IPv6Multihoming" They can be found at: http://www.ietf.org/internet-drafts/draft-ietf-shim6-proto-05.txt http://www.ietf.org/internet-drafts/draft-ietf-shim6-hba-01.txthttp://www.ietf.org/internet-drafts/draft-ietf-shim6-failure- detection-06.txtPlease review the documents carefully, and send your feedback to the SHIM6 list. Please also indicate whether or not you believe that these documents are ready to go to the IESG for publication as a set of Proposed Standards.This Working Group Last Call will end in two weeks, on the 12th October 2006 at 0800, UTC+10Thanks, Geoff & Kurtis