.Ed
.Cd configure
-.Cd portidsubtype ifname
-.Cd ifname | macaddress
+.Cd portidsubtype
+.Cd ifname | macaddress | local Ar value Op Ar description
.Bd -ragged -offset XXXXXX
Force port ID subtype. By default,
.Nm
interface name will be used as port identifier and the description
will be the interface alias. With this command, you can force the port
identifier to be the interface name (with
-.Cd ifname )
-or the MAC address (with
-.Cd macaddress ) .
+.Cd ifname ) ,
+the MAC address (with
+.Cd macaddress )
+or a local value (with
+.Cd value ) .
+In the latest case, the local value should be provided.
+Optionally, a port description can also be provided after the local
+value.
.Ed
.Cd configure