I'm fairly new to networking, I have a scenario at work that I need some assistance.
My company is running short on ip address, and I'm trying to find a way to expand the existing network by adding a class c private subnet. Since not all device on my network require a dedicated IP address assignment.
Our current setup:
ISP --- Cisco 2620 --- Cisco Pix 520 --- HP 5304xl Switch = 184.108.40.206/24 subnet
I have one class C subnet (220.127.116.11/24) provided by our ISP, and the current configuration is similar to below
ISP Serial Interface IP: 18.104.22.168 255.255.255.252
interface FastEthernet0/0 description Company LAN ip address 22.214.171.124 255.255.255.252 no ip mroute-cache speed 100 full-duplex ! interface Serial0/0 description Dedicated T1 Line to ISP ip address 126.96.36.199 255.255.255.252 no ip mroute-cache no fair-queue ! ip classless ip route 0.0.0.0 0.0.0.0 188.8.131.52 ip route 184.108.40.206 255.255.255.0 220.127.116.11
ip address outside 18.104.22.168 255.255.255.252 ip address inside 22.214.171.124 255.255.255.0 static (inside,outside) 126.96.36.199 188.8.131.52 netmask 255.255.255.00 0 route outside 0.0.0.0 0.0.0.0 184.108.40.206 1
HP 5304xl Switch:
ip default-gateway 220.127.116.11 ip routing ip route 0.0.0.0 0.0.0.0 18.104.22.168
W2k3 DC, Pix and all clients on the network are connect on HP 5304xl switch. All client have the switch ip 22.214.171.124 as it's gateway address.
My goal is to keep the existing ip/subnet assignment for all client device and servers intact, added a private class c subnet in 192.168.0.1/24 range for devices that does not need dedicated ip address (VOIP phones and computer that only need to browse the internet). Also, the ISP assigned subnet and the private subnet need to be able to communicate with each other.
Anyone can point me to the right direction on how to do this?