Enabling Ip Forwarding For Two Interfaces; Enabling Ip Forwarding For Two Ethernet Interfaces - Nortel BayStack Instant Internet 100-S Using Manual

132 Chapter 5 Advanced IP configuration

Enabling IP forwarding for two interfaces

To enable IP forwarding for a dial-up, ISDN or leased-line interface and a LAN
interface:
1
Enable IP forwarding for the unit.
Refer to
2
In the main Setup window, click Save and Exit.
You must allow the changes to take effect immediately before IP forwarding
is enabled.
3
Ensure that any computer on your network running TCP/IP that you want to
have access to the Internet using the Instant Internet unit has the default
gateway configured to be the IP address of the Instant Internet unit's
client-side interface.
The subnet mask should match the subnet mask that you entered for the
Network Interface.
You can also enable IP forwarding with two Ethernet interfaces. Before enabling
IP forwarding, check with your ISP to ensure that you have a LAN account that
provides you with a range of IP addresses.

Enabling IP forwarding for two Ethernet interfaces

To enable IP Forwarding with two Ethernet interfaces:
1
Configure your router to route the additional networks through the Instant
Internet unit's router interface connected to the router (Eth1, Eth2).
2
If the client-side interface does not have an IP address, add one.
a
b Click Add.
c
300868-G
"Enabling IP forwarding for a unit" on page
Start Setup, and if prompted, select a unit to configure.
Assign an appropriate IP address and subnet mask.
The IP address must be on a different subnet than the router-side
interface. If you are already using a legal, ISP-assigned address between
the router and the Instant Internet unit, you must either properly subnet, or
use a different (valid) network number for the client-side interface. The
Instant Internet actually routes between the two interfaces.
131.