Manual Pages  — ETHERSWITCHCFG

etherswitchcfg – configure a built-in Ethernet switch

SYNOPSIS DESCRIPTION config phy port reg vlangroup FILES EXAMPLES SEE ALSO HISTORY AUTHORS

etherswitchcfg [-f control file] info
etherswitchcfg [-f control file] config command parameter
etherswitchcfg [-f control file] phy phy.register[=value]
etherswitchcfg [-f control file] port%d [flags] command parameter
etherswitchcfg [-f control file] reg register[=value]
etherswitchcfg [-f control file] vlangroup%d command parameter

The etherswitchcfg utility is used to configure an Ethernet switch built into the system. etherswitchcfg accepts a number of options:

-f control file
	Specifies the etherswitch(4) control file that represents the switch to be configured. It defaults to /dev/etherswitch0.
-m
	When reporting port information, also list available media options for that port.
-v
	Produce more verbose output. Without this flag, lines that represent inactive or empty configuration options are omitted.

The config command provides access to global switch configuration parameters. It support the following commands:

vlan_mode mode
	Sets the switch VLAN mode (depends on the hardware).

The port command selects one of the ports of the switch. It supports the following commands:

pvid number
	Sets the default port VID that is used to process incoming frames that are not tagged.
media mediaspec
	Specifies the physical media configuration to be configured for a port.
mediaopt mediaoption
	Specifies a list of media options for a port. See ifconfig(8) for details on media and mediaopt.
led number style
	Sets the display style for a given LED. Available styles are: default (usually flash on activity), on, off, and blink. Not all switches will support all styles.

And the following flags (please note that not all flags are supported by all switch drivers):

addtag
	Add VLAN tag to each packet sent by the port.
-addtag
	Disable the add VLAN tag option.
striptag
	Strip the VLAN tags from the packets sent by the port.
-striptag
	Disable the strip VLAN tag option.
firstlock
	This options makes the switch port lock on the first MAC address it sees. After that, usually you need to reset the switch to learn different MAC addresses.
-firstlock
	Disable the first lock option. Note that sometimes you need to reset the switch to really disable this option.
dropuntagged
	Drop packets without a VLAN tag.
-dropuntagged
	Disable the drop untagged packets option.
doubletag
	Enable QinQ for the port.
-doubletag
	Disable QinQ for the port.
ingress
	Enable the ingress filter on the port.
-ingress
	Disable the ingress filter.

The reg command provides access to the registers of the switch controller.

The vlangroup command selects one of the VLAN groups for configuration. It supports the following commands:

vlan VID
	Sets the VLAN ID (802.1q VID) for this VLAN group. Frames transmitted on tagged member ports of this group will be tagged with this VID. Incoming frames carrying this tag will be forwarded according to the configuration of this VLAN group.
members port,...
	Configures which ports are to be a member of this VLAN group. The port numbers are given as a comma-separated list. Each port can optionally be followed by "t" to indicate that frames on this port are tagged.

/dev/etherswitch?
	Control file for the Ethernet switch driver.

Configure VLAN group 1 with a VID of 2 and make ports 0 and 5 its members while excluding all other ports. Port 5 will send and receive tagged frames while port 0 will be untagged. Incoming untagged frames on port 0 are assigned to vlangroup1.

    # etherswitchcfg vlangroup1 vlan 2 members 0,5t port0 pvid 2

etherswitchcfg first appeared in FreeBSD 10.0 .

Stefan Bethke