Path Selection Between Routing Protocols

This section discusses path selection between routing protocols. If the protocols have paths to the same remote destination network, the routing process must decide which path to enter into the routing table. Because the metrics differ between the protocols, selection is based on an arbitrary admini...

Shortest-Path Tree Switchover

PIM-SM routers could continue forwarding packets via the PIM-SM two-step process, whereby sources send packets to the RP, and the RP sends them to all other routers using the RPT. However, one of the most fascinating aspects of PIM-SM operations is that each PIM-SM router can build the SPT between i...

Various components comprise an MPOA system

The following sections describe each of the significant components. Figure 10-2 illustrates the components and their positional relationship. Note that there are ingress and egress devices, inbound and outbound flows, and configuration, control, and data flows. Figure 10-2. MPOA Model ...

Disabling the Cisco Discovery Protocol

CDP can be an extremely useful feature because it tells you so much information about all of your neighboring devices. However, this can also represent a serious security problem. CDP packets are not encrypted in any way, so if somebody can just capture the CDP packets from a network segment as the...

Configuring EIGRP Metric Components (K-values)

EIGRP calculates its integer metric, by default, using a formula that uses constraining bandwidth and cumulative delay. You can change the formula to use link reliability, link load, and even disable the use of bandwidth and/or delay. To change the formula, an engineer can configure five weightin...

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