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Knowledge base Fallback options

One of the concerns people always have with any service like this is what happens if it breaks. We explain the underlying reliability of the service, but there are extra options we offer.


Any customers with our Ethernet internet access service can have any of our standard DSL services as a fallback. This can have the same IP addresses**.

The IP blocks on your line are routed via one of the IP addresses on a /29 for the Ethernet. We will constantly ARP for this address, and if it stops responding we will stop the routes for any other blocks via that address within out internal network giving the DSL line priority for those addresses. This allows fall-back to DSL within a few seconds.

When your router starts answering ARPs again (presumably the router, or fibre being fixed) routing will return to Ethernet.

Packets are accepted on up-link on broadband from your IPs at all times in this case, and our usual monitoring and text/email alerts apply to the broadband line so you know it is ready when you need it.


Our L2TP serivice allows backup using tunnels via any alternative internet access for the same IPs. Please let us know if this is of interest to you.


We can offer 3G/4G data services with full 1500 byte MTU and routed blocks of IPv4 addresses (and tunneled IPv6). The FireBrick FB2900 can be used to automatically fall back to 3G/4G with a suitable dongle and one of our data SIMs.

Initial service launch

**At present there are some restrictions on seamless IP address re-routing between Ethernet and broadband/mobile. As such we will provide additional IPs for broadband/dial-up initially where customers want fallback arrangements.