Hi Roni,
> -----Original Message----- > From: Roni Even [mailto:[email protected]] > Sent: Thursday, July 22, 2010 8:48 AM > To: Martin Stiemerling; [email protected] > Subject: RE: [alto] FW: I-D Action:draft-kiesel-alto-3pdisc-03.txt > > Hi, > I reviewed the draft and noticed the change. There is a similar work on > general discovery in draft-song-alto-server-discovery-02. This draft > was > discussed in previous meeting and one of the comments was to use DHCP > for > discovering the local domain as also discussed in > http://tools.ietf.org/html/draft-ietf-geopriv-lis-discovery-15. There is a fundamental difference between geopriv and alto For geopriv you need to find the server associated with your geo-location, to which your access-line is bound (or your radio tower). This requires using DHCP to some extend (or PPP). However, ALTO does not require to spot the server that is serving your geo-location but a server in charge of you. This is a bit more relaxed IMHO. Second, for geo-location services (e.g., emergency there is a hard requirement to spot the geo-location and thus also the need to upgrade all equipment to deal with new DHCP/PPP options). > > I saw in the 3pdisc draft the limitation you gave on DHCP and I am not > sure > I understand the last two bullets. The last bullet is the same problem > as > for the DNS case and requires the ALTO client to provide the domain > name to > the tracker. As for the bullet before last, look at the geopriv > document. For the last bullet: this is not supported by DHCP, given that the DHCP is under the control of the ISP and the user has no meaningful way to find the server manually. For the bullet before the last bullet: The text is probably too strong, as some homegateways will forward unknown DHCP options but some won't. This leaves too much space for deployment issues compared to the DNS SRV RR ALTO server discovery. [email protected] NEC Laboratories Europe - Network Research Division NEC Europe Limited | Registered Office: NEC House, 1 Victoria Road, London W3 6BL | Registered in England 2832014 _______________________________________________ alto mailing list [email protected] https://www.ietf.org/mailman/listinfo/alto
