The Mechanics of the redistribute Command

The redistribute router subcommand tells one routing protocol to take routes from another routing protocol. This command can simply redistribute all routes or, by using matching logic, redistribute only a subset of the routes. The redistribute command also supports actions for setting some parameter...

Caveats Regarding OSPF Network Types over NBMA Networks

When configuring OSPF over Frame Relay, the OSPF network type concept can become a bit troublesome. In fact, many CCIE Routing and Switching lab preparation texts and lab books focus on the variety of combinations of OSPF network types used with Frame Relay for various interfaces/subinterfaces. The ...

Address Planning

Summarization is not possible as an after-thought. If network numbers are randomly assigned within an organization, it will be difficult or impossible to find ways to adequately summarize. When designing a network, it is extremely important that careful attention is paid to the requirements for summ...

E-Mail

Designing network security for e-mail centers on separating inbound and outbound mail and providing for network virus scanning. This separation is made both for security and to ensure quick delivery of messages without requiring internal users to go outside for mail messages or external senders to c...

AutoQoS

AutoQoS is an extremely useful feature that can take a lot of the mystery out of building a QoS policy. Unfortunately, there are several restrictions on this feature that you need to be aware of. First, it is only available on point-to-point links between routers. This includes point-to-point sub...

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