DMVPN Phase III

Introduction   Welcome to the last installment of my series on DMVPN, which will cover DMVPN phase III.  If you missed the first two blog posts covering phase I and … Continue Reading →


DMVPN Phase II

Introduction   In this post, I am going to continue my series on DMVPN by covering DMVPN Phase II.  The crypto implementation will be exactly as it was in part … Continue Reading →


Summary Routes To Null0 & The Protocols That Love Them

Introduction     OK, so the title of this blog sounds like a really geeky version of “The Jerry Springer Show” but it’s all in good fun!  When doing route … Continue Reading →


OSPF Ninja Filtering — Area Range

Today I am going to show you guys a subtle way to accomplish OSPF inter-area filtering. The more traditional way to do OSPF inter-area filtering is to use the area … Continue Reading →


Understanding OSPF Type 4 LSAs

The OSPF ASBR type 4 LSA is probably one of the most misunderstood topics with regards to OSPF for people that are just learning the protocol.  In today’s blog we … Continue Reading →