LANCOM Support Knowledgebase
Document No. 0911.1010.4536.DHOB - V1.20
ARF: Setting up local networks with different network IDs
Description:
This document outlines the parameters and functions of the "
A
dvanced
R
outing and
F
orwarding" feature. ARF enable LANCOM routers to support network virtualization. Depending on the device, up to 64 full and independent virtual networks can be defined.
These networks have their own independent interfaces, IP networks, VLANs, rules for routing, firewall and QoS, DHCP servers, and DNS settings, among others. The result is that a single router can support a range of scenarios that until now would have demanded multiple dedicated devices.
Requirements:
1. The latest version of LCOS and
2. The current LANtools
You can find the latest version of LCOS for your LANCOM
here
.
The latest LANtools are available
here
.
Scenario:
The objective is to set up three intercommunicating networks on the LAN-side of the router.
Individual LAN ports and logical wireless LANs are allocated to their respective network.
Network1: Interfaces ETH 1 (LAN1) and logical WLAN 1, Network ID: 172.16.1.0
Network2: Interfaces ETH 2 (LAN2) and logical WLAN 2, Network ID: 172.16.2.0
Network3: Interfaces ETH 3 and ETH 4 (LAN 3 and LAN 4) Network ID: 172.16.3.0
(Older devices may be marked with LAN x instead of ETH x.
After firmware version 7.1x, ETH x is the standard name for the physical port).
Procedure:
LANconfig is used to perform the configuration.
A LANCOM 1811 Wireless DSL is used for this example scenario.
If you want to link multiple LAN ports to a single network, then all you have to do is to allocate them to the same LAN (LAN-1 to LAN-4). By default, all LAN interfaces are allocated to LAN-1.
If LAN interfaces with logical WLANs are to be collected into one network, then the LAN interface and the logical wireless LAN have to be collected into a bridge group.
Step 1: Assigning the interfaces to the networks:
Using LANconfig, open the configuration for your router.
Assign Ethernet interface 1 to the logical LAN-1.
Assign Ethernet interface 2 to the logical LAN-2.
Assign Ethernet interfaces 3 and 4 to the logical LAN-3.
Link the logical WLAN-1-1 to the logical LAN-1 by using the bridge group BRG-1.
Link the logical WLAN-1-2 to the logical LAN-2 by using the bridge group BRG-2.
A bridge group for the interfaces LAN-3 and LAN-4 is unnecessary as these are already collected as logical LAN-3.
Step 2: Assigning IP numbers to the networks:
Now define the router's IP addresses for the various networks.
Give the network a name.
Assign an IP address and netmask for this network to the router.
Assign the logical interfaces, to which the IP addresses are to apply, to the router. (BRG1, BRG2, LAN3)
Ignore the pre-defined networks Intranet and DMZ. These correspond to the networks used up until firmware 6.x.
Step 3:
Set the DHCP server to be used for distributing IP numbers.
Each of the network names defined under step 2 must be included into the DHCP range.
By specifying only the network name for DHCP, you make the full IP-address range for that network available for allocation. Parameter fields which are left blank (e.g. the IP address for the default gateway) are completed automatically using the appropriate values in the LANCOM router.
Completion:
Configure the logical WLAN-1-1 and WLAN-1-2 to provide access to the router.
Check the configuration by establishing a connection to each LAN port, and by testing access via the two WLANs.
Sample configuration:
Please review this document!
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