cancel
Showing results for 
Search instead for 
Did you mean: 
cancel
467
Views
10
Helpful
6
Replies

Network Design Question

r-tyrell
Level 1
Level 1

I recently purchased an 1841 modular router and need to connect three different networks. One network is the internet, the second network is a remote location, the third network is the local LAN. These are three different subnets and are handed off via RJ45 connections. The 1841 only has two integrated LAN ports. Will I be able to connect these networks together without buying additional cards? If I have to use an additional switch or router I can do that too. Thank you for your help.

1 Accepted Solution

Accepted Solutions

Hi

subinterfaces created on 1841.

vlans on 2950 eg.

vlan 10 created on 2950

on router

interface fa0/1.10

ip address x.x.x.x

encapsulation dot1q 10

HTH

Jon

View solution in original post

6 Replies 6

anandramapathy
Level 3
Level 3

Possible,

FE A - use for Internet

FE B - connect to a switch & trunk both ends.

Create 2 VLANs. 1 for Remote office & 1 for Local office.

Create 2 subinterfaces & assign the IPs of the Local lan & Remote office respectively.

( These will be the WAN & Gateway for LAN respectivily )

You can also Enable Cisco IOS Firewall functionality for security

HTH - Pls rate if it helps.

Thank you for the reply. Can you tell me if a Catalyst 2950 will be able to provide this functionality?

Hi

yes the 2950 will support 802.1q trunking.

Jon

I forgot to ask if the subinterfaces and VLANS are supposed to be created on the 1841 or 2950. Thank you again for your response.

Hi

subinterfaces created on 1841.

vlans on 2950 eg.

vlan 10 created on 2950

on router

interface fa0/1.10

ip address x.x.x.x

encapsulation dot1q 10

HTH

Jon

Thanks, just tested it in a lab environment and it works. You guys rock!

Getting Started

Find answers to your questions by entering keywords or phrases in the Search bar above. New here? Use these resources to familiarize yourself with the community:

Innovations in Cisco Full Stack Observability - A new webinar from Cisco