ccna hacking pdf

ccna hacking pdf.Auto-summarization is enabled in the IPv4 EIGRP process; if auto-summarization is turned off, the summarized route to the NullO interface is removed unless manual route summarization is performed under the interface.R3#showip routeeigrp172.16.0.0/16 is variably subnetted,8 subnets, 3 masks D172.16.24.0/30 [90/2681856] via 172.16.34.2,00:01:05,SerialO/O/O [90/2681856] via 172.16.23Chance 00:01:05,SerialO/O/1 D172.16.4.0/24 [90/2172416] via 172.1634.2, 00:01:05,SerialO/O/O D172.31.0.0/16 [90/2681856] via 172.16.23.1 This is because all interfaces running IPv4 EIGRP on this router are in the same primary class network (172.16.0.0/16) and therefore do not perform route auto-summary, even if route auto-summary is enabled, which is why 172.16.24.0/30 and 172.16.4.0/24 explicit routes are learned. The EIGRP metric is calculated using a more complex metric, which is illustrated next with the D 172.16.4.0/24190/2172416) via 172.16.34.2, 00:01:05, SerialO/O/O routing entry in the router's R3 routing table. Formula for calculating EIGRP metric = [KIxBandwidth+ (K2 xBandwidth)/(256-Load) + K3xDeIay ]x[^/(Reliability+ K4) ] x256 By default, K1 = K3 = 1, K2 = K4 = K5 = 0.Chapter 16 EIGRP .279 .Bandwidth = [107/Minimum value of bandwidth (in kbps) of the incoming interface over the link through which the routing entry is delivered] x256Delay = [Sum of delay (in press s)/IO of the incoming interface over the link through which the routing entry is delivered] x256 Next look at how the 172.16.4.0/24 routing entry metric in router R3 is calculated? First of all, the bandwidth should be the minimum bandwidth of all interfaces that pass from router R4's G0/0 to router R3 (the interface that learns the routing direction), so it should be the bandwidth of R3's S0/0/0 interface, i.e. 1544kbps, and the delay is the sum of the delay of router R4's G0/0 interface (100gs) and router R3's S0/0/0 interface (20000 news s), so the final metric is the sum of the delay of router R4's G0/0 interface (100gs) and the delay of router R3's S0/0/0 interface (20000 news s). ), so the final metric should be [101544+(100+20 000)/10]x256=2172416,which is consistent with the result calculated by the router.Bow [mention small]The bandwidth and latency of the interface can be viewed with the showinterface command. The bandwidth and delay of the interface can be modified by the following command: R3(conflg-if)#bandwidth bandwidth R3(config-if)#