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 parameters about the redistributed routes—for example, the metric. The full syntax of the redistribute command is as follows: redistribute protocol [process-id] [level-1 | level-1-2 | l..
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 summarization. Figure 2-5 shows that an example corporation might have multiple levels of summarization —within plants, within manufacturing groups, at the divisional level, and to ..
No discussion of the evolution of data networking would be complete without some commentary on OSI. Benefits of OSI By the early 1980s, the networking community was tired of being tied to proprietary networking solutions. To promote a smoother system with more support, both hosts and networking infrastructure had to come from the same vendor. Admittedly, development according to standards could squash creativity, but from a customer perspective, this was an acce..
One common security truism is "Once you have physical access to a box, all bets are off." This is a good beginning assumption for this section. If an attacker has physical access to a computer, router, switch, firewall, or other device, your security options are amazingly limited. Networking devices, with few exceptions, can have their passwords reset by attaching to their console port. Hosts can be booted with a special floppy disk or CD-ROM designed to circumvent most host ..
Cisco Implementation of Multilink Frame Relay
This section takes a closer look at Cisco's implementation of the Multilink Frame Relay feature in its Cisco IOS software. Cisco's implementation of the Multilink Frame Relay feature is compliant with the Frame Relay Forum's FRF.16 standard specifications. NOTE The Multilink Frame Relay feature is released in Cisco IOS 12.2(8)T. It is supported on c2600, c3600, c3700, and c7200 series routers. The following Cisco Connection Online (CCO) site also lists the Cisco platforms ..
