Name:_____________________________ Download the router simulator via anonymous FTP at 192.168.0.197 It's the esim.exe file. Start it (i.e. no configuration done) On Router A, view the running config. What is the router's hostname:____________________ What is Ethernet 0's IP address:______________ What does 'show protocols' say about e0:______________________________ What does the first line of output of 'show int e0' say: _________________________________________________________ What does 'show interfaces' say the MTU of e0 is:_________ Do 'sh ip route' and notice that besides the "codes" key there is nothing. Go into interface config mode of E0, assign it its IP address and class C mask indicated on the diagram and then bring the interface up. Configure E1 and S0 too. Include the 'clock rate' command for S0. Look at the running config to make sure the three interfaces have the correct IP addresses and masks, are not shutdown, and the S0 has the correct clock rate. If not, go back into the relevant interface config mode to correct the settings. What does the first line of output of 'show int e0' say: _________________________________________________________ What has been added in 'sh ip route': ________________________________________ ________________________________________ ________________________________________ What "code" are they:______________ These are the (only) networks this router knows about now. What happens if ping 10.10.10.1:_______________________________ it's an unknown-to-A network. A has no route to it. What happens if ping 201.100.11.2:_______________________________ A knows where this network is (connected to its S0 interface, but the other end is down) Logon to router B. Configure its interfaces with the specified IP addresses. View the running config to confirm all is correct. What routes does it have in its routing table: ________________________________________ ________________________________________ ________________________________________ Back on router A: Has there been any change to A's routing table:_______ What happens now if ping 201.100.11.2:_______________________________ A has a route to this network and that IP is up and can respond. What happens if ping 199.6.13.1 (B's S0):_____________________ A has no route to this network. A doesn't know it can go out its S0 to B and that this IP address is at B. All A knows about any networks is what's in its routing table. What happens if ping 219.17.100.1 (B's E0):_____________________ same situation. So, even though A can "get to" B via the 201.100.11.0/24 network it can't get to the "far sides" of B because it doesn't know anything about those far sides. A doesn't know where the 199.6.13.0 and 219.17.100.0 networks are, so any attempt to ping/access them goes nowhere; A won't send the packet out any interface. Activate RIP routing on A. Go into router config mode and add all three of A's connected networks. What's been added to the running config of A: ________________________________________ ________________________________________ ________________________________________ ________________________________________ A will now be advertising these networks to other connected routers that are also running RIP, telling them it knows how to get to these networks. Do 'sh ip route'. There should not be any new routes. Go back to router B. Do 'sh ip route'. There should not be any new routes. (if there are, pretend they aren't there. the simulator has a bug.) Activate its RIP routing protocol but only for networks 201.100.11.0 (its S1) and 199.6.13.0 (its S0), NOT for its 219.17.100.0 (its E0). What's been added to the running config of B: ________________________________________ ________________________________________ ________________________________________ B will periodically tell its neighboring routers (e.g. A) this and be receiving routing updates from its neighbors (e.g. A) about what they know. What's been added to the routing table of B: __________________________________________________________ __________________________________________________________ What "code" are they:_______ Go back to A. What's been added to its routing table: __________________________________________________________ What "code" is it:_______ The number after the / in '[120/1]' is the hop count. To get to this network, what interface will be used and to what address:_______________________ What happens if now ping 199.6.13.1 (B's S0):_____________________ A now has a route to this network. What happens if ping 219.17.100.1 (B's E0):_____________________ still no route to it. Go to router C and configure its S1 interface. Verify it can ping B's S0 and that B can ping it. The routing table of C should contain only the directly connected 199.6.13.0 network but the simulator is buggy and might show networks learned by Rip even though RIP is not running on C! From A, Can A ping C's S1:________ (it shouldn't be able to!) A has a route to that network but C doesn't/shouldn't have a route back to the 201.100.11.1 interface that A sent the ping out of. Go to routers C, D, and E and configure their interfaces. Verify that they are correct by viewing their running config. Activate RIP on them for their connected networks. What has been added to A's routing table: ________________________________________ ________________________________________ ________________________________________ How many hops to router E's E0 network:_____ Can A ping E's E0:_____ What networks does router E know about: ________________________________________ ________________________________________ ________________________________________ ________________________________________ ________________________________________ ________________________________________ ________________________________________ ________________________________________ How many hops to router A's E0 network:_____ Can E ping A's E0:_____