I think Priscilla gives some good reason why a "VLSM-aware" redirect may not be very effective. Also redirects for default route or networks outside of your IGP would be problomatic.
Dave Black Jack wrote: > Hmm...that suggests that a VLSM-aware redirect would be useful. Send the > mask along with the network address in other words. Does such a thing exist, > or has it ever been proposed? > > > >>Answer: The host can't know about subnet masks being used >>elsewhere. Also, with classless addressing, it can't assume a >>Class A mask for network 10.0.0.0. >> >>The host can't know for sure that ALL of 10.0.0.0/8 is >>reachable by the router that claims that it is. With >>variable-length subnet masking, classless addressing, >>discontiguous subnets and all the other things people do to >>their network designs, the safest thing for the host to do is >>to place a host-specific route into its table. >> >>Just thought I'd turn this into a more advanced "lesson." :-) >> >>_______________________________ >> >>Priscilla Oppenheimer >>www.troubleshootingnetworks.com >>www.priscilla.com >> >> >> >>> >>> >>>Thanks in advance. >>> >>>-DJ >>> >>> >>> >>> >>>--------------------------------- >>>With Yahoo! Mail you can get a bigger mailbox -- choose a size >>>that fits your needs -- David Madland CCIE# 2016 Sr. Network Engineer Qwest Communications 612-664-3367 "You don't make the poor richer by making the rich poorer." --Winston Churchill Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=61061&t=61004 -------------------------------------------------- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
