Hello, Within the mobile-ip working group, there has for quite a while now been a change to allow advertisements to be transmitted more often than was specified in RFC 2461. More recently, it was noticed that this caused a conflict with MIN_DELAY_BETWEEN_RAS, also as specified in RFC 2461. For this reason (and after quite a bit of discussion), the Mobile IPv6 specification creates a new configurable parameter, which is specified to override the previously specified value for the protocol constant MIN_DELAY_BETWEEN_RAS. Since the latter value was specified in an IPv6 working group document, I thought that it would be appropriate to notify this group about the resolution of the matter in the mobile-ip working group, according to the following message. I truncated the original message, but have supplied a URL for the rest of the original discussion for the convenience of interested parties.
Regards, Charlie P. -------- Original Message -------- From: "Charles E. Perkins" <[EMAIL PROTECTED]> Subject: Re: [mobile-ip] Issue 88 proposal for resolution To: Mobile IP Working Group <[EMAIL PROTECTED]> Hello folks, Since there has not been any discussion to the contrary, I will apply the following changes to the draft and consider the issue to be closed. New text in Section 12. Protocol Constants: MinDelayBetweenRAs 0.05 seconds .............. The value MinDelayBetweenRAs overrides the value of the protocol constant MIN_DELAY_BETWEEN_RAS, as specified in RFC 2461 [12]. Regards, Charlie P. "Charles E. Perkins" wrote: > > Hello folks, > > Issue #88 a long text, but the overall best resolution is > I think not difficult. Bottom line: > > Make a new tunable constant, and (almost) use Brent's text: > > > To accomodate these values the protocol constant > > MIN_DELAY_BETWEEN_RAS needs to be adjusted: > > > > - MIN_DELAY_BETWEEN_RAS 0.05 seconds > > After much discussion, Jari elaborates and reformulates > that option (the first "..." is "also", which word applied > to some previous text I did not replicate here). > > > (2) Make MIN_DELAY_BETWEEN_RAS ... configurable > ....... This ensures that current > > characteristics of RAs can be kept by correct configuration. > > However, a constant needs to change to a configurable variable > > and this looks a bit funny specification-wise ;-) > > I believe this solution is almost fine, and that it is not too problematic > to change a constant to a configurable variable. It doesn't seem to > be any worse than adding new mandatory functionality for such equipment > that intends to support Mobile IP, and I don't think that the presence > of such routers would damage pre-existing equipment. > > For the funny-looking typography, we could use lower case > instead and then specify that the lower-case variant obsoletes > the upper-case constant from RFC 2461. > > If this solution is acceptable, then I think we should also > make the proposal known on the IPv6 mailing list for their > comment, since we are dealing with modification to RFC 2461 > which is a product of that working group. > > Regards, > Charlie P. > > ======================================================================= ............ The rest of the above e-mail message is a quotation of text can be found at: http://www.piuha.net/~jarkko/publications/mipv6/issues/issue88.txt -------------------------------------------------------------------- IETF IPng Working Group Mailing List IPng Home Page: http://playground.sun.com/ipng FTP archive: ftp://playground.sun.com/pub/ipng Direct all administrative requests to [EMAIL PROTECTED] --------------------------------------------------------------------