Hey Ed, Type-5 is generated by the ASBR when you redistribute a route into OSPF. Type-4 is generated by an ABR not an ASBR. A type-4 basically tells routers how to get to the next-hop or forwarding-address of an external route.
You should check out my blog posts on OSPF and the type-4 LSA from a few months back. One more thing -- The type-4 and type-5 has nothing to do with where you are redistributing things from. On Mon, Mar 1, 2010 at 8:45 PM, Bodnar, Edward <[email protected]>wrote: > So I am a little confused about the difference between type 4 LSA and > Type 5 LSA’s. Maybe I am over thinking this. > > > > But they both seem to be generated by ASBR’s Is one for ospf to ospf > redistribution, and the other for eigrp or rip to ospf? > > > > > > > > _______________________________________________ > For more information regarding industry leading CCIE Lab training, please > visit www.ipexpert.com > > -- Regards, Joe Astorino CCIE #24347 (R&S) Sr. Technical Instructor - IPexpert Mailto: [email protected] Telephone: +1.810.326.1444 Live Assistance, Please visit: www.ipexpert.com/chat eFax: +1.810.454.0130 IPexpert is a premier provider of Classroom and Self-Study Cisco CCNA (R&S, Voice & Security), CCNP, CCVP, CCSP and CCIE (R&S, Voice, Security & Service Provider) Certification Training with locations throughout the United States, Europe and Australia. Be sure to check out our online communities at www.ipexpert.com/communities and our public website at www.ipexpert.com
_______________________________________________ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com
