Aug
02
DMVPN stands for Dynamic Multipoint VPN and it is an effective solution for dynamic secure overlay networks. In short, DMVPN is combination of the following technologies: 1) Multipoint GRE (mGRE) 2) Next-Hop Resolution Protocol (NHRP) 4) Dynamic Routing Protocol (EIGRP, RIP, OSPF, BGP) 3) Dynamic IPsec encryption 5) Cisco Express Forwarding (CEF) Assuming that reader has a general understanding of what DMVPN is and a solid understanding of IPsec/CEF, we are going to describe the role and... Read More
Mar
25
A common question that I get from students in class is what are the options to resolve spoke to spoke reachability in a Frame-Relay network. Below are your "standard" choices in order of preference: Read More
Jan
18
Brian, Read More
Jan
08
By adjusting the hello/dead timers you can make non-compatible OSPF network types appear as neighbors via the "show ip ospf neighbor" but they won't become "adjacent" with each other.  OSPF network types that use a DR (broadcast and non-broadcast) can neighbor with each other and function properly.  Likewise OSPF network types (point-to-point and point-to-multipoint) that do not use a DR can neighbor with each other and function properly.  But if you mix DR types with non-DR types they will not... Read More

Subscribe to INE Blog Updates

New Blog Posts!