IP allocation

Would you mind answering me some problem about IP allocation??

i want to know what rule i need to follow for the allocate IP to router and
switch.
e.g
Switch ---(class C)---Router---(class

---Router---(class C)---Swtich

THX~~~

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Comments

!30

Switch -(1)--(class C)---eth0 Router1 eth1-(2)--(class B)---eth 0 Router2 eth1-(3)--(class C)---Swtich

First : you don't allocate an IP to the swtich,only to the routers.

Second , on network (1) , you allocate a Class C , something like 200.2.2.1 . You allocate 200.2.2.1/24 for network 1 . (on eth0) on Router1.

On Router 1 eth1 you allocate a Class B IP address something like 150.2.2.1/16.

On Router 2 eth0 you allocate a Class B IP address within the same network with Router 1 eth1 ( 150.2.0.0/16 ) something like : 150.2.2.2/16. /16 means : 255.255.0.0 -> default subnet mask for Class B.

On Router 2 eth1 you allocate another Class C IP address , something
like : 195.2.4.1/24 ( from network 195.2.4.0/24 ).

Maybe you should look on IP v4 classes : IPv4

Cheers !

kitbson

If i use Routing Protocol "RIP", the subnet mask of the whole network
must be SAME ???