The following table describes the labels in this screen.
Table 17 VLAN: VLAN Port Setting
LABEL | DESCRIPTION |
|
|
GVRP | GVRP (GARP VLAN Registration Protocol) is a registration protocol that defines a |
| way for switches to register necessary VLAN members on ports across the |
| network. |
| Select this check box to permit VLAN groups beyond the local switch. |
|
|
Port Isolation | Port Isolation allows each port to communicate only with the CPU management |
| port and the Gigabit uplink ports but not communicate with each other. This option |
| is the most limiting but also the most secure. |
Port | This field displays the port number. |
|
|
* | Settings in this row apply to all ports. |
| Use this row only if you want to make some settings the same for all ports. Use this |
| row first to set the common settings and then make adjustments on a |
| basis. |
| Note: Changes in this row are copied to all the ports as soon as you |
| make them. |
Ingress Check | If this check box is selected for a port, the device discards incoming frames for |
| VLANs that do not include this port in its member set. |
| Clear this check box to disable ingress filtering. |
|
|
PVID | Enter a number between 1and 4094 as the port VLAN ID. |
|
|
GVRP | Select this check box to allow GVRP on this port. |
|
|
Acceptable Frame | Specify the type of frames allowed on a port. Choices are All, Tag Only and Untag |
Type | Only. |
| Select All from the |
| this port. This is the default setting. |
| Select Tag Only to accept only tagged frames on this port. All untagged frames will |
| be dropped. |
| Select Untag Only to accept only untagged frames on this port. All tagged frames |
| will be dropped. |
VLAN Trunking | Enable VLAN Trunking on ports connected to other switches or routers (but not |
| ports directly connected to end users) to allow frames belonging to unknown VLAN |
| groups to pass through the switch. |
Apply | Click Apply to save your changes to the switch’s |
| loses these changes if it is turned off or loses power, so use the Save link on the |
| top navigation panel to save your changes to the |
| are done configuring. |
Cancel | Click Cancel to reset the fields. |
8.6 Protocol Based VLANs
Protocol based VLANs allow you to group traffic into logical VLANs based on the protocol you specify. When an upstream frame is received on a port (configured for a protocol based VLAN), the switch checks if a tag is added already and its protocol. The untagged packets of the same protocol are then placed in the same protocol based VLAN. One advantage of using protocol based VLANs is that priority can be assigned to traffic of the same protocol.
90 | Chapter 8 VLAN |