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Router - TG582N - Using an external modem: Difference between revisions
Router - TG582N - Using an external modem (view source)
Revision as of 16:45, 7 May 2018
, 7 May 2018Configure PPP to use the right destination (eth_WAN or eth_PPP)
m (I have actually switched back to the internal modem once, which I'd better own up to.) |
m (Configure PPP to use the right destination (eth_WAN or eth_PPP)) |
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One may wish to use the TG582n just as a router, and use an external ADSL or VDSL modem. In your author's case, the performance of the TG582n as
was found to be very poor (3.2km from the exchange, 8km from a very powerful Medium Wave transmitter) and a different modem was much better (part of
a modem/router which can't do IPv6...).
One could use the configuration wizard to setup the TG582n for FTTC, but some of the settings aren't appropriate for ADSL - and my intention is
to make it easy to switch back to the internal modem (although since doing this, I've only switched back once!) and not lose my custom configuration.
=Sacrifice an Ethernet port=
:eth ifattach intf=eth_WAN
:eth ifconfig intf=eth_WAN wan=enabled priotag=disable
=For VDSL, create an interface with the appropriate VLAN=
BT's VDSL runs over a VLAN (101), and the Openreach modem (now discontinued)
and other modems expose the VLAN over the PPPoE link. So a 'shim' interface
is needed on the router to cope with the vlan.
:eth add vlan name=FTTx vid=101
:eth bridge vlan ifadd name=FTTx intf=virt untagged=disabled
:eth ifadd intf=eth_PPP
:eth ifconfig intf=eth_PPP dest=eth_WAN vlan=FTTx
:eth ifattach intf eth_PPP
=Switch PPP over to use this new interface=
One can't '''ppp ifconfig''' an interface which is administratively up, so one has to bring it down first
should be ''eth_WAN'' for ADSL or ''eth_PPP'' for VDSL.
:ppp ifdetach intf=Internet
:ppp ifconfig intf=Internet dest=eth_WAN|eth_PPP mru=1492
Then bring PPP back up:
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