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Diffstat (limited to 'docs/network.txt')
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diff --git a/docs/network.txt b/docs/network.txt new file mode 100644 index 0000000..69dbaa6 --- /dev/null +++ b/docs/network.txt @@ -0,0 +1,79 @@ + Network configuration in buildroot-ng + + +The network configuration in buildroot-ng is stored in /etc/config/network +and is divided into interface configurations. +Each interface configuration either refers directly to an ethernet/wifi +interface (eth0, wl0, ..) or to a bridge containing multiple interfaces. +It looks like this: + + config interface "lan" + option ifname "eth0" + option proto "static" + option ipaddr "192.168.1.1" + option netmask "255.255.255.0" + option gateway "192.168.1.254" + option dns "192.168.1.254" + +"ifname" specifies the Linux interface name. +If you want to use bridging on one or more interfaces, set "ifname" to a list +of interfaces and add: + option type "bridge" + +It is possible to use VLAN tagging on an interface simply by adding the VLAN IDs +to it, e.g. "eth0.1". These can be nested as well. + +This sets up a simple static configuration for eth0. "proto" specifies the +'protocol' used for the interface. The default image usually provides 'none' +'static', 'dhcp' and 'pppoe'. Others can be added by installing additional +packages. + +When using the 'static' method like in the example, the options "ipaddr" and +"netmask" are mandatory, while "gateway" and "dns" are optional. +DHCP currently only accepts "ipaddr" (IP address to request from the server) +and "hostname" (client hostname identify as) - both are optional. + +PPP based protocols (pppoe, pptp, ...) accept these options: + username: + The PPP username (usually with PAP authentication) + password: + The PPP password + keepalive: + Ping the PPP server (using LCP). The value of this option + specifies the maximum number of failed pings before reconnecting. + The ping interval defaults to 5, but can be changed by appending + ",<interval>" to the keepalive value + demand: + Use Dial on Demand (value specifies the maximum idle time) + + (pptp) + server: The remote pptp server IP + +For all protocol types, you can also specify the MTU by using the "mtu" option. + + + + + Setting up the switch (currently broadcom only) + + +The switch configuration is set by adding a 'switch' config section. +Example: + + config switch eth0 + option vlan0 "1 2 3 4 5*" + option vlan1 "0 5" + +On Broadcom hardware the section name needs to be eth0, as the switch driver +does not detect the switch on any other physical device. +Every vlan option needs to have the name vlan<n> where <n> is the VLAN number +as used in the switch driver. +As value it takes a list of ports with these optional suffixes: + + '*': Set the default VLAN (PVID) of the Port to the current VLAN + 'u': Force the port to be untagged + 't': Force the port to be tagged + +The CPU port defaults to tagged, all other ports to untagged. +On Broadcom hardware the CPU port is always 5. The other ports may vary with +different hardware. |