The developers of EIGRP have provided configurations to suit the three different WAN environments. The three WAN environments are as follows:
— NBMA hybrid (this is a combination of the point-to-point and multipoint designs)
When configuring the bandwidth command, it is important to consider the actual speed of the link. It is practical to configure this only on serial lines, where the speed of the link will vary considerably. However, do not confuse the speed of the interface or access line with the bandwidth or committed information rate (CIR) of the virtual circuit (VC).
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