new network address

we have gw network.There are 4 servers 4 switches and 120 clients with these address range.

Now we have new department,I would like use B class address for new department my  questions are:

1.What B class Range is good for our company i choosed , ,1022 hosts each subnet.  is that ok?

2.How can i configure a server with network on the new department server, which can use networks server too.

3.dns server on the network,i do not know what to write on the new depatment server.
Who is Participating?
Miguel Angel Perez MuñozCommented:
1. 1022 IP for 120 clients may be excesive.

2. Need to do routing between segments or put 2 ethernet interfaces configured on two LAN segments.

3. Add a new inverse zone. If namespace is the same you don´t need do nothing else.
Kruno DžoićSystem EngineerCommented:
why B class?

extend existing subnet maybe?

if you want to connect two subnets together you need router or layer 3 switch
orkinosAuthor Commented:
i do not know why B
i thought maybe for future grown.

extend existing subnet maybe? HOW?
orkinosAuthor Commented:
why i need Layer 3 switch?
Kruno DžoićSystem EngineerCommented:
Routing is the process of learning all the paths through the network (routes) and using routes to forward data from one network to another.


extend existing subnet maybe? HOW?
if you need more than 254 IP's you can always use mask on network

Netmask: = 22    
Network:       (Class C)
Hosts/Net: 1022            
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