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83 lines
4.0 KiB
ReStructuredText
.. _pppoe:
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PPPoE
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=====
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There are two main ways to setup VyOS to connect over a PPPoE internet connection. This is due to most ISPs (Internet Service Providers) providing a DSL modem that is also a wireless router.
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**First Method:** (Common for Homes)
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In this method, the DSL Modem/Router connects to the ISP for you with your credentials preprogrammed into the device. This gives you an RFC1918_ address, such as 192.168.1.0/24 by default.
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For a simple home network using just the ISP's equipment, this is usually desirable. But if you want to run VyOS as your firewall and router, this will result in having a double NAT and firewall setup. This results in a few extra layers of complexity, particularly if you use some NAT or tunnel features.
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**Second Method:** (Common for Businesses)
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In order to have full control and make use of multiple static public IP addresses, your VyOS will have to initiate the PPPoE connection and control it.
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In order for this method to work, you will have to figure out how to make your DSL Modem/Router switch into a Bridged Mode so it only acts as a DSL Transceiver device to connect between the Ethernet link of your VyOS and the phone cable.
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Once your DSL Transceiver is in Bridge Mode, you should get no IP address from it.
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Please make sure you connect to the Ethernet Port 1 if your DSL Transeiver has a switch, as some of them only work this way.
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Once you have an Ethernet device connected, i.e. eth0, then you can configure it to open the PPPoE session for you and your DSL Transceiver (Modem/Router) just acts to translate your messages in a way that vDSL/aDSL understands.
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**Here is an example configuration:**
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.. code-block:: none
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set interface ethernet eth0 description "DSL Modem"
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set interface ethernet eth0 duplex auto
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set interface ethernet eth0 smp_affinity auto
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set interface ethernet eth0 speed auto
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set interface ethernet eth0 pppoe 0 default-route auto
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set interface ethernet eth0 pppoe 0 mtu 1492
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set interface ethernet eth0 pppoe 0 name-server auto
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set interface ethernet eth0 pppoe 0 user-id <PPPoE Username>
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set interface ethernet eth0 pppoe 0 password <PPPoE Password>
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* You should add a firewall to your configuration above as well by assigning it to the pppoe0 itself as shown here:
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.. code-block:: none
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set interface ethernet eth0 pppoe 0 firewall in name NET-IN
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set interface ethernet eth0 pppoe 0 firewall local name NET-LOCAL
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set interface ethernet eth0 pppoe 0 firewall out name NET-OUT
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* You need your PPPoE credentials from your DSL ISP in order to configure this. The usual username is in the form of name@host.net but may vary depending on ISP.
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* The largest MTU size you can use with DSL is 1492 due to PPPoE overhead. If you are switching from a DHCP based ISP like cable then be aware that things like VPN links may need to have their MTU sizes adjusted to work within this limit.
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* With the ``default-route`` option set to ``auto``, VyOS will only add the Default Gateway you receive from your DSL ISP to the routing table if you have no other WAN connections. If you wish to use a Dual WAN connection, change the ``default-route`` option to ``force``.
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Handling and troubleshooting
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----------------------------
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You can test connecting and disconnecting with the below commands:
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.. code-block:: none
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disconnect interface 0
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connect interface 0
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You can check the PPPoE connection logs with the following:
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This command shows the current statistics, status and some of the settings (i.e. MTU) for the current connection on pppoe0.
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.. code-block:: none
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show interfaces pppoe 0
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This command shows the entire log for the PPPoE connection starting with the oldest data. Scroll down with the <space> key to reach the end where the current data is.
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.. code-block:: none
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show interfaces pppoe 0 log
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This command shows the same log as without the 'tail' option but only starts with the last few lines and continues to show added lines until you exit with ``Ctrl + x``
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.. code-block:: none
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show interfaces pppoe 0 log tail
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.. _RFC1918: https://tools.ietf.org/html/rfc1918
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