ccna guide book

ccna guide book.Energy Introduction MTU (Maximum Transmission Unit) is one of the parameters used to calculate the EIGRP routing metric, but this is incorrect. MTU is notnot a metric standard parameter used by EIGRP. The MTU is not used to calculate the routing metric value, although it is included in the routing update information. 5 Hop count: The number of hops to the destination router, in the range of 1.255. 6 Reliability: Indicates the minimum reliability between the source and destination networks based on keepalive packets. 7Load: indicates the minimum between the source and destination networks based on the packet rate and the bandwidth configured on the interfaceload. 8 Reserved: Reserved bit, always set to 0x0000..274.Cisco Networking Lab CCNA Lab Guide (Release 2)Prefix length: the length of the subnet mask. Destination: The destination address of the route, that is, the destination network address.3. TLVo for IPv4 External RoutesWhen redistributing external routes into the IPv4EIGRP routing process, the TLVo of IPv4 external routes for EIGRP is used The TLVo of Pv4EIGRP external routes is shown in Figure 16.5, and the meaning of each field is described below (only the fields added over the TLV of IPv4 internal routes are explained here).Figure 16-5 TLV for IPv4 EIGRP External RoutingSource router: The router that redistributes external routes to the EIGRP autonomous system, expressed as the router ID of that router. source autonomous system number: The autonomous system number where the router that originated the route is located. Arbitrary token: The token used to carry the route mapping map. External Protocol Metric: The external protocol metric, which is the field used by the EIGRP protocol when redistributing between IGRP protocolsmetric for tracking IGRP protocols. External Protocol ID: Indicates from which protocol the external route was learned. Flags: only two flags are currently defined, 0x01 for external routes and 0x02 for routes that are candidates for the default route