Friday, March 21, 2008
Saturday, October 20, 2007
OSPF routes should be filtered or summarized at area border routers.
Saturday, October 6, 2007
OSPF's fundamental design is that all routers in an area have the same exact view of the network topology. This is fundamentally incompatible with filtering routes within an area. As a result OSPF distribute lists do not have the same effect as RIP distribute lists. In fact, using distribute-lists within an OSPF area is dangerous.
Saturday, September 29, 2007
OSPF totally stubby areas and not-so-stubby areas are ways to improve OSPF scalability. But they can be very confusing.
Saturday, September 22, 2007
We cover OSPF stub areas and neighbor synchronization.
Monday, July 30, 2007
Sunday, July 15, 2007
We introduce multiple OSPF areas and network summary LSA's.
Saturday, June 30, 2007
We show a single area OSPF network and go into router and network link state advertisements (LSA's) in detail.