cancel
Showing results for 
Search instead for 
Did you mean: 
cancel
721
Views
0
Helpful
1
Replies

Networking Scenario - Router Configuration

mvrcisco
Level 1
Level 1

Hello

I have a networking scenario where two offices will be connected with a private line. Each office will need to configure their own router and integrate into their existing network. The ISP informed me to configure the serial connection between the routers with /30 ip addreses.

I am unsure of how to properly configure the ip addresses, interfaces and networks on the routers. Could you please review the following and see if I am on the right track? As I am fairly new to routing configuration I thank you for your assistance.

Network 1 - Office 1

Contains Router A - 2 interfaces e0, s0

Host Server A on Network 1 - Dual Nics,

Nic 1 - connects to inside interface of network 1

Nic 2 - connects to switch, switch connects to Router 1 (e0)

Serial Interface s0 - will connect to s0 Router B in Office 2

Network 2 - Office 2

Contains Router B - 2 interfaces e0, s0

Ethernet interface e0 will connect to existing network

Serial Interface s0 - will connect to s0 Router A in Office 1

Below is how I propose the configuration

HOST SERVER A

NIC#A

IP - 10.44.19.x (inside network)

Mask - 255.255.255.0

Gateway - 10.44.19.1

NIC#B

IP - 192.168.10.15

Mask - 255.255.255.252

Gateway - 192.168.10.1 (e0)

ROUTER A - OFFICE 1

Interface - e0

IP - 192.168.10.1

Mask - 255.255.255.252

Interface - s0

IP - 192.168.1.1

Mask - 255.255.255.252

Network Configuration - 192.168.10.0, 192.168.1.0

ROUTER B - OFFICE 2

Interface - s0

IP - 192.168.1.2

Mask - 255.255.255.252

Interface - e0

IP - x.x.x.x (to be determined)

Network Configuration - 192.168.1.0, x.x.x.x

1 Reply 1

Hello,

your configuration is ok, just be aware that:

NIC#A

IP - 10.44.19.x (inside network)

Mask - 255.255.255.0

Gateway - 10.44.19.1

cannot reach anything without the default gateway actually being configured on your router. You could add a secondary IP address to your Router A E0 interface:

ROUTER A - OFFICE 1

Interface - e0

IP - 192.168.10.1

Mask - 255.255.255.252

--> ip address 10.44.19.1 255.255.255.0 secondary

Also, but I guess that is obvious, make sure that you have either static routes or a routing protocol implemented.

HTH,

Georg