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24 Port Stackable Managed Switch – User Guide Page 26
IEEE802.1Q VLANS
This is a more complex form of VLAN that reacts to the tagging field in the Ethernet packets.
Unlike Port Based VLANS, where VLANS created are only significant to the local Switch,
802.1Q VLANS can exist across multiple Switches. The connection between these Switches
is called an 802.1Q trunk.
Figure 25. 802.1Q VLAN Configure Screen
1. Having selected 802.1Q in the VLAN Configure Menu the above is displayed.
2. Use the <tab> to move into the VLAN ID Range and select required VLAN ID range
by pressing <space>. Again using the <tab> key to move into the port field of the
menu. Enter the number of the tagged VLAN ID directly into the VLAN ID field. If the
device connected to this port does not support tagged VLANS, the ingress traffic will
have the specified default tag number added to each packet. This allows legacy
devices that do not support tagging to interoperate with tagged VLAN systems.
3. Use the <tab> key to move into the Ingress Filter field of the menu. Use the
<spacebar> to toggle between Disable and Enable. When this filter is Enable
(default), then only ingress packets with an identical VLAN tag to the port VLAN ID
will be forwarded. If Disable, all tagged packets will be forwarded.
4. Use the <tab> key to move into the Acceptable Frame Type field of the menu. Use
the <spacebar> key to toggle between All and Tag Only. If All then all tagged and
non-tagged packets will be forwarded. If Tag Only then only ingress packets with a
tag will be forwarded.
Product Number 0-1591099-x © Tyco Electronics 2005 Issue 1