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Discovering computer networks: hands on in the Open Networking Lab
Discovering computer networks: hands on in the Open Networking Lab

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6.7 Review

In this part you will briefly review the different roles the home gateway plays in a home network.

Now watch the video below, which is about 2 minutes long.

Review

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Activity 6 Think about

10 minutes

Your ISP has given you a new, updated gateway. Could you use your old gateway device as a second wireless access point? What would you need to consider?

Discussion

Yes, it should be possible to use your old gateway device as an additional wireless access point. Once set up, the old box will no longer be a ‘gateway’ but it will use the Wi-Fi and switching functions. Routing, NAT, DHCP and DNS will all be carried out by the new gateway.

Some gateways have a configuration option to set this up automatically; otherwise, you can do it manually. This is easier if you plan to connect the old box to the new gateway with an Ethernet cable connection; trying to connect between old and new boxes by Wi-Fi is challenging or impossible.

Since both old and new gateways may by default have the same IP address, do the initial setup of the old box using a cable connection from a laptop. Change the inside IP address of the old box to be a static address on the same network as the new gateway but which doesn’t clash. Disable DHCP on the old box.

Connect the old box (use a LAN port, not the port labelled ‘internet’ or ‘WAN’ since you are not using the routing functions) by cable to the new gateway. You should now be able to connect to your home network and the internet through either Wi-Fi point; your mobile device should pick the better connection, or you can pick manually if you have kept different SSIDs.