Need some help

[batgat]

Hello,thank you for allowing me to post here
... since i am a rookie in the field would you please help me out on this:
i need to connect the three routers as described on the picture bellow (the ports with the question marks on them)

http://img390.imageshack.us/img390/9234/nethr9.jpg

What IP's they should get so that they connect each other and be able to send and receive packets to / from others networks
Thanks!

 

[ch33zw1z]

do your own homework

 

[batgat]

Originally posted by: ch33zw1z
do your own homework

yeah... if I could I wouldn't have asked for

 

[rathsach]

Just pick a small unused subnet of RFC1918 addresses and assign an address to each router from those.. Then you're good to go.. With 3 addresses a /29 subnet is advisable..

 

[batgat]

rathsach, thanks for your reply
I was thinking to assign 172.16.0.0 - 172.31.255.255 (172.16/12 prefix) (RFC1918) which gives me 16 supernets 1048574 addresses each with but would this causes me any trobles in the future?
for example:
R1-172.16.4.1
R2-172.16.8.1
R2-172.16.12.1
so that I can add hosts to each of those three new nets
And if I add the default route 172.16.0.0 in the route table would this work in this way?
I haven't tried to implement supernets so far

or it would be more beneficial if I go with /29 bits mask?

Thanks again

 

[rathsach]

Why on earth would you want to use so many addresses for that?

I just checked out your drawing again and saw that the bottom router was connected to another side of the top-right one.. Yesterday I saw it as a 3 way cross..

You'll have to tell me exactly what you need this to do? If it's simple connectivity you should always aim to use as few addresses as possible.. /29 og even /30 if you only need 2 usable addresses..

I don't know how strong you are subnetting wise, but remember that just because 172.16.0.0/12 is an RFC1918 scope, you don't have to use it with a /12 mask..

Tighten up your subnet masks, and from experience try to keep away from the top and bottom of the rfc1918 scopes.. People tend to use those the most..

 

[freegeeks]

the drawing is not very clear but a /30 should be enough between each router