are described in IEEE 802.1Q.
are a 4 Byte extension to the standart Ethernet-frame, the VLAN
-tag. The Tag is set by the driver of the networkinterface. On most modern switches packets are routed according to VLAN
-tags. The configuration is port-based.
The Tag containes a 12bit VLAN
-name and a priority. VLAN
-names from 1-4095 are valid.
On Linux nodes to send/recive VLAN
-tagged packets one has to set up a virtual interface on top of the physical interface. This virtual interface behaves the same way as a physical interface. An IP-address and Netmask has to be set to get the VLAN
-interface working. For a VLAN
-interface for VLAN
2 on top of eth1 the name of the virtual interface would be eth1.2
On the Switch side, every port can be configured to revice tagged packets from every VLAN
-number, that has been activated before. Tagged packets are only routed to Switch-ports that are configured to recive packets from the specified VLAN
In both telnet-menu-mode and on the web interface the VLAN
-configuration can be done. Visit HP2900 VLAN configuration
To add a virtual interface for VLAN
10 on top of eth0, first bring eth0 up, otherwise the vconfig add
will return an error.
#ifconfig eth0 up
#vconfig add eth0 10
The Interface will be named eth0.10.
#vconfig rem eth0.10
Removes the Interface that has just been created.
Next step would be to configure the virtual VLAN
#ifconfig eth0.10 _IP_ netmask _255.255.x.y_ ...