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VP then 25 will display PVID = 1 In the case that you do configure this state and lock the web interface out, then you can recover by connecting to the RS-232 console port and either disabling Tagged VLAN, or adjust the settings via the following options. VE - Enable/Disable 802.1Q VLAN VF – Get 802.1Q VLAN Enable Setting VV – Set PVID VP – Get PVID 19 2.6.1 Enable/Disable VLAN In the 802.1Q VLAN page, you can enable/disable the tag-based VLAN function by clicking the (Enable) or (Disable) hyperlink beside the page header: • Enable – to activate the tag-based VLAN function (this will disable the port-based VLAN function). • Disable – to de-activate the tag-based VLAN function. (Any existing tag-based VLAN entries will be retained although tag-based VLAN functions will be disabled. Any retained port-based VLAN entries will auto enable.) 20 2.6.2 802.1Q VLAN Port Configuration Click the Port number to configure the port for 802.1q VLAN. The following figure shows the 802.1Q VLAN Port Configuration page by port. (e.g. Port10) You can select an individual port for configuring the 802.1q settings in the following fields: • PVID – enter a valid VLAN ID(1-4094), the PVID must be one of the existing VLAN group ID. • UnTag Frame – Accept or drop incoming untagged frames. • Tag Frame – Accept or drop incoming tagged frames. Finally, there are 2 buttons to select: Apply: To submit the port configuration settings to the switch. Back: To revert back to the 802.1q main setting page without saving. 21 2.6.3 802.1Q VLAN Config The following figure displays the add/delete/edit function for 802.1q VLAN entries. Each VLAN entry has 3 parameters, VID, Tag Members and UnTag Members to be assigned. After selecting the Create New VLAN, the figure shown as below will display: • VID – a unique VLAN ID, range is from 1 to 4094 • Tag Members & UnTag Members – Click the U/T icon to switch between Non Member, Tag Member or Untag Member. Select the VID (1-4094) and within the member row select the ports which will belong to this VLAN group. After these settings are completed, click the Create button to submit the data to the switch. Click the Cancel button to abort the actions and revert back to the VLAN Config page. 22 Here is an example on how to configure the 802.1q VLAN. Now there are four existing 802.1q VLAN entries shown as below. Note: You can delete 802.1q VLAN entries via the selecting the Vlan from the dropdown list and (e.g. VID = 200), then click the Remove This VLAN button to perform the deletion. Note the 802.1q VLAN table now shows the following entries: The VID entry (VID=200) is successfully deleted. 23 If you would like to edit the parameters of an 802.1q VLAN, just select a VID to be changed (e.g. VID =300), then make the required changes and click the Apply button : Port 17 and Port18 are selected to be the tag members of this group. 24 2.7 Trunking The GSS-24T2SFP web smart switch supports MAC-based trunking. This allows more than one port to be grouped together as a single link connection between two switch devices. This is also useful for switch-to-server and switch-to-router applications. The GSS-24T2SFP web smart switch allows four trunk groups that can accommodate up to eight trunk members in each group. A port in one trunk group cannot be a member of another trunk simultaneously. This feature provides redundancy and increases the effective bandwidth through a link. Traffic patterns are balanced between the ports within a trunk group by dynamically performing a MAC-based load balancing algorithm. This is supported only on point-to-point links with MACs operating in full duplex mode. All links in the same trunk group must operate at the same rate. The GSS-24T2SFP web smart switch provides dynamic failover support within the trunk group. If a port within the trunk group fails, the other ports of the trunk group automatically assume the extra traffic load currently running through the link. Under normal operating modes, the links within the trunk group should have an equal amount of traffic. To achieve this, this switch performs load balancing based on a distribution algorithm. The following parameters should be configured to enable this: • Distribution Criterion – Select a distribution algorithm from which the switch will perform load balancing: • SA (Source MAC Address) • DA (Destination MAC Address) • SA + DA (both SA and DA) • Member – the member port(s) of trunk group(s) Select the Trunk menu on the web page to activate the page shown as below. 25 2.7.1 Trunking Rules The following rules determine your configuration for port trunking: • The attributes of all trunk member ports in Port Configuration, Mirror, Rate Control, 802.1Q VLAN and Port-Based VLAN functions must be the same. • All trunk member ports can not be a capture port or monitored port in the Mirror function. • If Port1/Port2 is using fiber media and wants to be grouped with ports using copper (Port3 – Port24) as a trunk group, then the auto nego...

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