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This is the support site for Andrews & Arnold Ltd, a UK Internet provider. Information on these pages is generally for our customers but may be useful to others, enjoy!
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#REDIRECT [[:Category:FireBrick_USB_Dongles]]
[[File:2700-small.png|link=:Category:FireBrick]]
[[File:Zoom_Dongle_Small.png]]
=3G Fallback=
The 2700 model has a
==Supported Dongles==
Dongles do vary, and drivers may need to be written to support a particular dongle. Contact us if you have one which is not working. The following dongles are known to work on a FireBrick 2700:
*[[
*Huawei E353 (Three branding)
*Huawei E170 (BT Branding)
==A Note on Bonding 3G SIMs==
Multiple USB
Using multiple dongles with SIMs from different providers may provide extra resilience in the case of one having a problem.
▲=Basic 3G Config=
If you have an AAISP data SIM, the FireBrick can be configured to use this as a backup connection, by using a 3G dongle plugged into the USB port. Any routed legacy IPv4 blocks will continue to work across this link, but so far IPv6 isn't supported (without using a tunnel).
<syntaxhighlight>
<usb>
<dongle username="me@a.
</usb>
</syntaxhighlight>
▲Provided you use your AAISP username and password, then that's all you need to get the dongle configured. If your main broadband connection goes down, the FireBrick will automatically switch to use the 3G connection, then back again once your main connection is back.
If using AAISP, then the options for IPv6 routing on the [[:Category:Control Pages|Control Pages]] allow an IPv6 block to be routed to a tunnel endpoint if the main routing (
▲=Config with Tunneled IPv6 Fallback=
▲If using AAISP, then the options for IPv6 routing on the [[:Category:Control Pages|Control Pages]] allow an IPv6 block to be routed to a tunnel endpoint if the main routing (ie ADSL/FTTC) goes down. This means IPv6 can be routed to the 3G dongle if the main broadband(s) go down. The MTU will be limited though.
==Example Config==
LAN Interface for IPv6 tunnel over 3G dongle (with MTU 1500):
<syntaxhighlight>
<interface name="LAN" port="LAN" ra-client="false">
<subnet ip="
</interface>
</syntaxhighlight>
<syntaxhighlight>
<interface name="LAN" port="LAN" ra-client="false">
<subnet ip="
</interface>
</syntaxhighlight>
Connect to AAISP over PPPoE session (3G dongle tweaks and NAT):
<syntaxhighlight>
<ppp name="AAISP" port="WAN" username="me@a.1" password="secret" nat="true" lcp-rate="1" lcp-timeout="5" graph="AAISP" log="default"/>▼
</syntaxhighlight>
Connect to AAISP over 3G dongle (with NAT):
<syntaxhighlight>
<dongle name="AAISP-3G" username="me@a.
</syntaxhighlight>
3G dongle IPv6 default route using IPv4 tunnel:
<syntaxhighlight>
▲<ppp name="AAISP" port="WAN" username="me@a.1" password="secret" lcp-rate="1" lcp-timeout="5" graph="AAISP" log="default"/>
▲<dongle name="AAISP-3G" username="me@a.3" password="secret" nat="false" graph="AAISP-3G" log="default"/>
<route ip="::/0" gateway="81.187.81.6" comment="IPv6 default route using IPv4 tunnel"/>
</syntaxhighlight>
=
Sometimes we don't want the dongle to be online 24x7 and want it turned off outside of office hours.
This example brings the dongle online for quick fallback during office hours, and leaves it powered up but disconnected.
Note that both <usb> and <dongle> elements can be based on profiles.
Disabling <usb> will physically turn off the USB port and therefore also the dongle.
Cold starts take a lot longer!
<syntaxhighlight>
<usb>
<dongle name="AAISP-3G" username="me@a.3" password="secret
</usb>
This example is taken from a site which has 2 ADSL lines - hence the No-DSL profile being based on ADSL1 and ADSL2 being up.
The AAISP-3G profile is then active during office hours, but it will become active if both of the ADSL lines are down outside of office hours.
</pre>
You can tell when the swap over happened as the latency increases and then decreases again when the DSL came back online.
=Telnet Commands=
<pre>clear usb</pre>
Show dongle information:
<pre>show dongle</pre>
▲[[Category:3G Router]]
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