08-23-2007 08:31 AM - edited 03-03-2019 06:26 PM
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.
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08-23-2007 10:53 AM
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
08-23-2007 08:49 AM
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.
08-23-2007 10:17 AM
Thank you for the reply. Can you tell me if a Catalyst 2950 will be able to provide this functionality?
08-23-2007 10:31 AM
Hi
yes the 2950 will support 802.1q trunking.
Jon
08-23-2007 10:52 AM
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.
08-23-2007 10:53 AM
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
08-23-2007 12:49 PM
Thanks, just tested it in a lab environment and it works. You guys rock!
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