ccna certification study guide volume 2

ccna certification study guide volume 2.Gateway oflast resortis 172.16.21.2 to network 0.0.0.0 Current default route next hop address R* 0.0.0.0/0 [120/3]via 172.16.21.2,00:00:10,GigabitEthemetO/O |120/3]via 172.16.12.2,00:00:03,Serial0/0/0 //R4 injects a default route for R* into the RIP network 172.16.0.0/16 is variably subnetted, 11 subnets, 2 masks variable length subnet mask, 2 mask lengths, 11 subnets, here part Direct and local routes are not listed here R 172.16.4.0/24 [120/3] via 172.16.21.2,00:00:10,GigabitEthemet0/0 [120/3] via 172.16.12.2,00:00:03,SerialO/O/O There are 2 paths from router R2 to the 172.16.4.0 network, and both metric values are 1 hop, such routes are called equivalent paths.82 . Cisco Networking Lab CCNA Lab Guide (Release 2)Female [Tech City Extension 1With equivalence paths, the router can implement load balancing when forwarding packets. Load balancing can be based on either packet ( Per-packet) switching or destination ( Per-destination) switching. It is up to the switching process to control how the router load balances packets across equivalent paths. The default configuration is CEF destination-based switching. If you want to implement CEF packet-based switching, the command ip load-sharing per-packeto be configured under the interface can be used to see if it is packet-based or destination-based network forwarding with the following command.Rl#show ip cef172.16.4.0 detail172.16.4.0/24, epoch 0,per-destination sharingnexthop 172.16.12.2 SerialO/O/Onexthop 172.16.21.2 GigabitEthernetO/OThe fast switching and process switching processes are obsolete, and the packet forwarding process for these two switching modes under load balancing will not be discussed in depth here.