.0.0.0 172.16.0.0/16 [120/1] via 10.10.10.4, 00:00:21, Etherneto/o 10.0.0.0/8 is variably subnetted, 2 subnets, 2 masks 10.10.10.0/24 is directly connected, Etherneto/o 10.100.100.100/32 is directly connected, Loopback0 192.168.1.0/24 is directly connected, Ethernet1/0 0.0.0.0/0 [254/0] via 192.168.1.2 Here we see an example of a host route being received by RIP: R4# sho ip route [text removed] Gateway of last resort is not set Specific Routing Protocols 172.16.0.0/32 is subnetted, 1 subnets 172.16.1.1 is directly connected, Loopback0 10.0.0.0/8 is variably subnetted, 2 subnets, 2 masks 10.10.10.0/24 is directly connected, Etherneto/o 10.100.100.100/32 [120/1] via 10.10.10.3, 00:00:21, Etherneto/o 192.168.1.0/24 is directly connected, Ethernet0/1 RIPv2 RIP was updated in the mid-1990s to reflect the widespread use of Classless Internet Domain Routing (CIDR) and Variable Length Subnet Masks (VLSM). The new pro- tocol, RIP Version 2, operates similarly to RIP Version 1, in that it still uses hops as its only metric. However, it does have some significant advantages over RIPv1, including: Classless routing is supported by including subnet masks in network advertisements. The maximum hop count is 255 instead of 15. 256 is now the unreachable metric, as opposed to 16 with RIPv1. Updates in RIPv2 are sent using the multicast address 224.0.0.9, instead of as broadcasts. Neighbors can be configured with RIPv2. When a neighbor is configured, updates are sent to that neighbor using unicasts, which can further reduce network traffic. RIPv2 supports authentication between routers. Even though RIPv2 supports subnets, it still only accepts classful addresses in the network command, SO be careful when determining what networks and interfaces you've included. Use the passive- interface command to limit the scope of the network command, if necessary. RIPv2 is classless, and advertises routes including subnet masks, but it summarizes routes by default. This means that if you have a 10.10.10.0/24 network connected to your router, i