Configuring OpenWrt Network
The network configuration in Kamikaze 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. You can specify more than one DNS server, separated with spaces.
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 ",
" to the keepalive value
- demand: Use Dial on Demand (value specifies the maximum idle time.
- server(pptp): The remote pptp server IP
For all protocol types, you can also specify the MTU by using the mtu option.
Setting up static routes
You can set up static routes for a specific interface that will be brought up after the interface is configured.
Simply add a config section like this:
config route foo option interface lan option target 220.127.116.11 option netmask 255.255.255.0 option gateway 192.168.1.1
The name for the route section is optional, the interface, target and gateway options are mandatory. Leaving out the netmask option will turn the route into a host route.
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"
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