| .. SPDX-License-Identifier: GPL-2.0 |
| |
| ======================================= |
| DSA switch configuration from userspace |
| ======================================= |
| |
| The DSA switch configuration is not integrated into the main userspace |
| network configuration suites by now and has to be performed manualy. |
| |
| .. _dsa-config-showcases: |
| |
| Configuration showcases |
| ----------------------- |
| |
| To configure a DSA switch a couple of commands need to be executed. In this |
| documentation some common configuration scenarios are handled as showcases: |
| |
| *single port* |
| Every switch port acts as a different configurable Ethernet port |
| |
| *bridge* |
| Every switch port is part of one configurable Ethernet bridge |
| |
| *gateway* |
| Every switch port except one upstream port is part of a configurable |
| Ethernet bridge. |
| The upstream port acts as different configurable Ethernet port. |
| |
| All configurations are performed with tools from iproute2, which is available |
| at https://www.kernel.org/pub/linux/utils/net/iproute2/ |
| |
| Through DSA every port of a switch is handled like a normal linux Ethernet |
| interface. The CPU port is the switch port connected to an Ethernet MAC chip. |
| The corresponding linux Ethernet interface is called the master interface. |
| All other corresponding linux interfaces are called slave interfaces. |
| |
| The slave interfaces depend on the master interface. They can only brought up, |
| when the master interface is up. |
| |
| In this documentation the following Ethernet interfaces are used: |
| |
| *eth0* |
| the master interface |
| |
| *lan1* |
| a slave interface |
| |
| *lan2* |
| another slave interface |
| |
| *lan3* |
| a third slave interface |
| |
| *wan* |
| A slave interface dedicated for upstream traffic |
| |
| Further Ethernet interfaces can be configured similar. |
| The configured IPs and networks are: |
| |
| *single port* |
| * lan1: 192.0.2.1/30 (192.0.2.0 - 192.0.2.3) |
| * lan2: 192.0.2.5/30 (192.0.2.4 - 192.0.2.7) |
| * lan3: 192.0.2.9/30 (192.0.2.8 - 192.0.2.11) |
| |
| *bridge* |
| * br0: 192.0.2.129/25 (192.0.2.128 - 192.0.2.255) |
| |
| *gateway* |
| * br0: 192.0.2.129/25 (192.0.2.128 - 192.0.2.255) |
| * wan: 192.0.2.1/30 (192.0.2.0 - 192.0.2.3) |
| |
| .. _dsa-tagged-configuration: |
| |
| Configuration with tagging support |
| ---------------------------------- |
| |
| The tagging based configuration is desired and supported by the majority of |
| DSA switches. These switches are capable to tag incoming and outgoing traffic |
| without using a VLAN based configuration. |
| |
| single port |
| ~~~~~~~~~~~ |
| |
| .. code-block:: sh |
| |
| # configure each interface |
| ip addr add 192.0.2.1/30 dev lan1 |
| ip addr add 192.0.2.5/30 dev lan2 |
| ip addr add 192.0.2.9/30 dev lan3 |
| |
| # The master interface needs to be brought up before the slave ports. |
| ip link set eth0 up |
| |
| # bring up the slave interfaces |
| ip link set lan1 up |
| ip link set lan2 up |
| ip link set lan3 up |
| |
| bridge |
| ~~~~~~ |
| |
| .. code-block:: sh |
| |
| # The master interface needs to be brought up before the slave ports. |
| ip link set eth0 up |
| |
| # bring up the slave interfaces |
| ip link set lan1 up |
| ip link set lan2 up |
| ip link set lan3 up |
| |
| # create bridge |
| ip link add name br0 type bridge |
| |
| # add ports to bridge |
| ip link set dev lan1 master br0 |
| ip link set dev lan2 master br0 |
| ip link set dev lan3 master br0 |
| |
| # configure the bridge |
| ip addr add 192.0.2.129/25 dev br0 |
| |
| # bring up the bridge |
| ip link set dev br0 up |
| |
| gateway |
| ~~~~~~~ |
| |
| .. code-block:: sh |
| |
| # The master interface needs to be brought up before the slave ports. |
| ip link set eth0 up |
| |
| # bring up the slave interfaces |
| ip link set wan up |
| ip link set lan1 up |
| ip link set lan2 up |
| |
| # configure the upstream port |
| ip addr add 192.0.2.1/30 dev wan |
| |
| # create bridge |
| ip link add name br0 type bridge |
| |
| # add ports to bridge |
| ip link set dev lan1 master br0 |
| ip link set dev lan2 master br0 |
| |
| # configure the bridge |
| ip addr add 192.0.2.129/25 dev br0 |
| |
| # bring up the bridge |
| ip link set dev br0 up |
| |
| .. _dsa-vlan-configuration: |
| |
| Configuration without tagging support |
| ------------------------------------- |
| |
| A minority of switches are not capable to use a taging protocol |
| (DSA_TAG_PROTO_NONE). These switches can be configured by a VLAN based |
| configuration. |
| |
| single port |
| ~~~~~~~~~~~ |
| The configuration can only be set up via VLAN tagging and bridge setup. |
| |
| .. code-block:: sh |
| |
| # tag traffic on CPU port |
| ip link add link eth0 name eth0.1 type vlan id 1 |
| ip link add link eth0 name eth0.2 type vlan id 2 |
| ip link add link eth0 name eth0.3 type vlan id 3 |
| |
| # The master interface needs to be brought up before the slave ports. |
| ip link set eth0 up |
| ip link set eth0.1 up |
| ip link set eth0.2 up |
| ip link set eth0.3 up |
| |
| # bring up the slave interfaces |
| ip link set lan1 up |
| ip link set lan1 up |
| ip link set lan3 up |
| |
| # create bridge |
| ip link add name br0 type bridge |
| |
| # activate VLAN filtering |
| ip link set dev br0 type bridge vlan_filtering 1 |
| |
| # add ports to bridges |
| ip link set dev lan1 master br0 |
| ip link set dev lan2 master br0 |
| ip link set dev lan3 master br0 |
| |
| # tag traffic on ports |
| bridge vlan add dev lan1 vid 1 pvid untagged |
| bridge vlan add dev lan2 vid 2 pvid untagged |
| bridge vlan add dev lan3 vid 3 pvid untagged |
| |
| # configure the VLANs |
| ip addr add 192.0.2.1/30 dev eth0.1 |
| ip addr add 192.0.2.5/30 dev eth0.2 |
| ip addr add 192.0.2.9/30 dev eth0.3 |
| |
| # bring up the bridge devices |
| ip link set br0 up |
| |
| |
| bridge |
| ~~~~~~ |
| |
| .. code-block:: sh |
| |
| # tag traffic on CPU port |
| ip link add link eth0 name eth0.1 type vlan id 1 |
| |
| # The master interface needs to be brought up before the slave ports. |
| ip link set eth0 up |
| ip link set eth0.1 up |
| |
| # bring up the slave interfaces |
| ip link set lan1 up |
| ip link set lan2 up |
| ip link set lan3 up |
| |
| # create bridge |
| ip link add name br0 type bridge |
| |
| # activate VLAN filtering |
| ip link set dev br0 type bridge vlan_filtering 1 |
| |
| # add ports to bridge |
| ip link set dev lan1 master br0 |
| ip link set dev lan2 master br0 |
| ip link set dev lan3 master br0 |
| ip link set eth0.1 master br0 |
| |
| # tag traffic on ports |
| bridge vlan add dev lan1 vid 1 pvid untagged |
| bridge vlan add dev lan2 vid 1 pvid untagged |
| bridge vlan add dev lan3 vid 1 pvid untagged |
| |
| # configure the bridge |
| ip addr add 192.0.2.129/25 dev br0 |
| |
| # bring up the bridge |
| ip link set dev br0 up |
| |
| gateway |
| ~~~~~~~ |
| |
| .. code-block:: sh |
| |
| # tag traffic on CPU port |
| ip link add link eth0 name eth0.1 type vlan id 1 |
| ip link add link eth0 name eth0.2 type vlan id 2 |
| |
| # The master interface needs to be brought up before the slave ports. |
| ip link set eth0 up |
| ip link set eth0.1 up |
| ip link set eth0.2 up |
| |
| # bring up the slave interfaces |
| ip link set wan up |
| ip link set lan1 up |
| ip link set lan2 up |
| |
| # create bridge |
| ip link add name br0 type bridge |
| |
| # activate VLAN filtering |
| ip link set dev br0 type bridge vlan_filtering 1 |
| |
| # add ports to bridges |
| ip link set dev wan master br0 |
| ip link set eth0.1 master br0 |
| ip link set dev lan1 master br0 |
| ip link set dev lan2 master br0 |
| |
| # tag traffic on ports |
| bridge vlan add dev lan1 vid 1 pvid untagged |
| bridge vlan add dev lan2 vid 1 pvid untagged |
| bridge vlan add dev wan vid 2 pvid untagged |
| |
| # configure the VLANs |
| ip addr add 192.0.2.1/30 dev eth0.2 |
| ip addr add 192.0.2.129/25 dev br0 |
| |
| # bring up the bridge devices |
| ip link set br0 up |
