Dear Lee, Thanks for your reply but can you please clarify or elaborate more the last sentence "Also, even though you only set a prefix information into a router in the network, the router will make a global address if there is another router sending router advertisement message."
You are right that i am talkign about stateless autoconfiguration which the router also uses to form Link-local address, but my question is regarding the global scope address of the router. The specs say that routers are assigned addresses (except link-local) either manually or by an external means. In my case, lets suppose i manually provide the router's interfaces with only 64 bit prefixes and not complete global scope 128 bit addresses. Then in that case would it be legal for the router to statelessly auto-configure its 128 bit global scope address by combining the manually provided prefixes with the MAC48 interface identifier as specified in RFC 2462? Zarrar ________________________________ > Date: Thu, 5 Jul 2007 01:11:11 +0900 > From: [EMAIL PROTECTED] > To: [EMAIL PROTECTED] > Subject: Re: [mipl] Autocnfiguration for Routers in IPv6 > CC: [email protected] > > Dear colleague. > The address configuration methods in IPv6 are normally divided into two. One > is a stateless auto-configuration (RFC 2462) and other thing is a stateful > auto-configuration (RFC 3315). Well, actually, the stateless > auto-configuration is done by router advertisement message sent from a router > and the statefult auto-configuration is done by DHCPv6 server that nodes > obtain the address configuration information with DHCP procedures. > Your question must be about the stateless auto-configuration. A router in the > network would have its IPv6 address (network prefix + other) and then the > router periodically sends router advertisement message to all node in the > network. The router advertisement message includes the prefix information and > the address configuration information. In the case that the router only has a > link-local adress, the router advertisement message would be wrong because > the link-local address cannot be sent as the prefix information in the router > advertisement message. > Also, even though you only set a prefix information into a router in the > network, the router will make a global address if there is another router > sending router advertisement message. > Cheers. > On 7/4/07, [EMAIL PROTECTED] <[EMAIL PROTECTED]> wrote: > Dear all, > Thankyou for detailed replies regarding my previous question about the need > to perform DAD. > Another question is regarding the auto-configuration of Routers in an IPv6 > network. > >From RFC 2462 and also i read somewhere that "With the exception of > >link-local addresses, address auto-configuration is only specified for HOSTS > >(and by implication not for routers). Routers must obtain address > >configuration parameters through another means (for example, manual > >configuration)". > Because every router interface (except loopback ofcourse) should have a > global-scope IPv6 address which the MN will use as destination address in BU > during Home registration process in MIPv6, so if I manually provide ONLY > prefixes to an IPv6 router, then can't the router perform auto-configuration > to form a global-scope address from this manually assigned prefix(es)? > Clarification would be appreciated. > Zarrar > _________________________________________________________________ > Don't get caught with egg on your face. Play Chicktionary! > http://club.live.com/chicktionary.aspx?icid=chick_wlmailtextlink > _______________________________________________ > mipl mailing list > [email protected] > http://www.mobile-ipv6.org/cgi-bin/mailman/listinfo/mipl > -- > Internet Management Technology Lab, Sungkyunkwan University. > Jong-Hyouk Lee. > #email: jonghyouk (at) gmail (dot) com > #webpage: http://www.hurryon.org _________________________________________________________________ Local listings, incredible imagery, and driving directions - all in one place! Find it! http://maps.live.com/?wip=69&FORM=MGAC01 _______________________________________________ mipl mailing list [email protected] http://www.mobile-ipv6.org/cgi-bin/mailman/listinfo/mipl
