|Flexible Extranet Implementation

Do you need to deploy an extranet? In a simple yet flexible enough way? Getting rid of limitations brought by fixed addressing? MPLS VPN implementation of an extranet brings the flexibility that will ... more

|Secure Time Management

The April IP Corner article It’s good to be on time describes how you can use Network Time Protocol (NTP) to synchronize the real-time clock of your network devices with external time references. As s... more

|The OSPF Default Mysteries

Default routing should be a simple concept, but becomes surprisingly complex in routing protocols that have multiple layers of default routes. In this IP Corner article, Ivan Pepelnjak describes how t... more

|Servers in Small Site Multi-Homing

If you want to deploy high-availability public servers within your network, you should implement proper multi-homing solution including BGP routing with the Service Providers. But even if you use alte... more

|Scalable Policy Routing

Network designers and implementers try to avoid policy routing, as its common implementation in Cisco IOS requires a complex mix of access-lists and route-maps that have to be deployed on a hop-by-hop... more

|It's Good to be on Time

The importance of having accurate time on distributed servers and even personal workstations has been recognized long time ago by the IT managers, but it hasn’t been applied consistently to the networ... more

|Designing Fast Converging BGP Networks

Border Gateway Protocol (BGP) was always considered a mastodonic routing protocol: huge, complex, hard to understand and configure, and very slow to converge. When Cisco decided to use it to implement... more