User manual

GSS Series User Manual

3.22 VLAN

The GSS-48T4SFP supports both 802.1q Tagged based VLAN’s and Port-based VLAN’s.

VLAN’s are used to logically separate your network into smaller more defined networks.

VLAN’s help to reduce broadcast traffic across your network as all broadcast traffic will be

limited to the VLAN group in which it belongs. A typical example of where a VLAN could be

used is in a school environment where the teacher and student networks must be kept

separate. The switch supports up to 256 active Tagged VLAN entries and a VLAN ID ranging

from 1 – 4096 and up to 72 Port based VLAN’s can be created.

3.22.1 VLAN Mode

Fig. 3.54

VLAN Mode: Select the type of VLAN method you would like to use :

Disabled: When set to disable, VLAN’s will not be used on the switch.

Tag Based: Tag-based VLAN’s identify members by its VID. A VID can be applied to a

packet from a host machine that supports 802.1q or from the switch itself

when a packet is sent from the switch. Ingress and Egress rules can also

be applied to each port to identify how a packet is handled. The switch

will accept both tagged and un-tagged packets depending on the ingress

rules that have been defined. Rules can be created to allow only

incoming packets to be tagged; however when this rule is applied any

untagged packets will be dropped.

Each tag-based VLAN you build must have a VLAN name and VLAN ID.

Valid VLAN ID’s range from 1 – 4096. The maximum number of tag-

based VLAN groups that can be created is 254.

Port Based: Port-based VLAN’s are as it states defined by each port. Ports are

configured into logical groups allowing data to be sent to and from any

port that belongs to a particular group. If a port belongs to VLAN group 1

and another port belongs to VLAN group 2 these ports will not be able to

communicate with each other. Ports that belong to the same group can

communicate. Ports can also belong to multiple groups for example,

allowing an internet connection to be shared among two VLAN groups.

The switch has support for up to 72 port-based VLAN groups.