Your network is configured as shown in the exhibit. (Click the Exhibit button.)
Server1 regularly accesses Server2.
You discover that all of the connections from Server1 to Server2 are routed through Router1.
You need to optimize the connection path from Server1 to Server2.
Which route command should you run on Server1?
A.
Route add -p 10.10.10.0 MASK 255.255.255.0 172.23.16.2 METRIC 100
B.
Route add -p 10.10.10.0 MASK 255.255.255.0 10.10.10.1 METRIC 50
C.
Route add -p 10.10.10.12 MASK 255.255.255.0 10.10.10.1 METRIC 100
D.
Route add -p 10.10.10.12 MASK 255.255.255.0 10.10.10.0 METRIC 50
Explanation:
Destination – specifies either an IP address or host name for the network or host.
subnetmask – specifies a subnet mask to be associated with this route entry. If subnetmask is not
specified, 255.255.255.255 is used.
gateway – specifies either an IP address or host name for the gateway or router to use when
forwarding.
costmetric – assigns an integer cost metric (ranging from 1 through 9,999) to be used in calculating
the fastest, most reliable, and/or least expensive routes. If costmetric is not specified, 1 is used.
interface – specifies the interface to be used for the route that uses the interface number. If an
interface is not specified, the interface to be used for the route is determined from the gateway IP
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Shouldn’t this be c?
C.
Route add -p 10.10.10.12 MASK 255.255.255.0 10.10.10.1 METRIC 100
Why would you route via 172.23.16.2 (Router 1), isn’t that what is already happening? Surely you would create a static route to 10.10.10.12 via 10.10.10.1?
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I think it is setting an optimal rout to get to 10.10.10.0. In the diagram server1 can use 2 different routers. since 172.23.16.2 is directly connected it is the fastest rout so you are programing the server to always use that rout. It seems dumb but the server could rout through multiple routers to get to the correct network. this just speeds up the process. Bad example for sure.
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You can’t add a GW address (10.10.10.1) that is outside of your network segment (172.23.16.0). With that route, you force the server to route all the traffic to the network 10.10.10.0 through the “new” gateway 172.23.16.2 instead the .1 that is the default GW.
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Osito has explained it quite well. Furthermore, the .2 IP is the address of router2, not router1 – maybe this is where your confusion comes from. The routes are set only via GW addresses in the net segments you have direct access to.
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I think A i correct, if you look closely you’ll see that router 1’s IP is 172.23.16.1, so everything is routing through router1. But if you use option A you are saying that any traffic that goes to the 10.10.10.0/24 network use router2 (172.23.16.2) which would avoid going through router1.
Also, like Osito mentioned you can’t use 10.10.10.1 as the router IP since server 1 is on the 172.23.16.0/24 network.
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