VLSM - What is the addresses? (How to? Need help, pls)

altron

Hello, guys.

I just learned VLSM recently. Though I have some problems, that I'd need help to, pls.

I know, how to calculate small hosts, but let's concentrate on the main problem first.

I've calculated the addresses, but dont know what is gateway, serial addresses, or ip address to the pc's and routers.




Please refer to the picture and help me fill the blanks with question marks. -> 1), 2), and so on.


5) PC 5 - 100 hosts. IP: 192.168.60.0-127 /25
Fa0/0: 192.168.60.1
Subnet Mask: 255.255.255.128
Gateway: ?

4) PC 4 - 9 hosts. IP: 192.168.60.128-143 /28
Fa0/0: 192.168.60.129
Subnet Mask: 255.255.255.240
Gateway: ?

3) PC 3 - 7 hosts. IP: 192.168.60.144-151 /29
Fa0/1: 192.168.60.145
Subnet Mask: 255.255.255.248
Gateway: ?

2) PC 2 - 5 hosts. IP: 192.168.60.152-159 /29
Fa0/0: 192.168.60.153
Subnet Mask: 255.255.255.248
Gateway: ?

1) PC 1 - 3 hosts. IP: 192.168.60.160.163 /30
Fa0/1: 192.168.60.161
Subnet Mask: 255.255.255.252
Gateway: ?

6) IP: 192.168.60.164-167 - 7) IP: 192.168.60.168-171 /30 - 3 Routers and serial.:

-R1)
Fa0/0: ?
Fa0/1: ?
S0/0/0: ?

-R2)
Fa0/0: ?
Fa0/1: ?
S0/0/0: ?
S0/0/1: ?

-R3)
Fa0/0: ?
S0/0/1: ?


If it's confusing, pls let me know. I'll see, what I can do. I'm tryin' to do it in PacketTracer atm, but can't do it to work, since I dont know what to input.

NetworkVeteran

6) IP: 192.168.60.164-167 -

I doubt anyone will fill in homework-like answers for you, but I'll point you in the right direction.

On link #6, what are the two valid host addresses? Assign the first available address to one router interface and the second to the other router interface. While your instructor has no room to complain if you assign the addresses in any valid manner, I'd try to minimize such situations, by assigning addresses to routers before hosts, and then to the lowest-numbered devices before the highest-numbered devices. This assumes no further guidance was given.