Configure Trunk Groups - D-Link DES-3624 Series User Manual
Stackable nway ethernet switch
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Stackable NWay Ethernet Switch User's Guide
priority tag field in the packet header contains a value of 0-3, the packet will be placed in the low
priority queue; a value of 4-7 causes the packet to be placed in the high priority queue.
♦ Port Lock When Enabled, automatic learning for all stations connected to this port will stop and
entries in the Forwarding Table for all devices residing on this port will age out. The only traffic this
port will allow is traffic from machines whose MAC address is manually entered in the Static
Forwarding Table.
♦ Broadcast Storm Rising Action This setting will be activated when a Broadcast Storm Rising
Threshold is met. When triggered, the port can be configured to Do Nothing, Block, or Block & Trap.
The Do Nothing setting causes the switch to operate normally, in other words, ignore the broadcast
storm condition. The Block setting causes the port to drop all broadcast frames, thus isolating the
broadcast storm. Block & Trap performs the same action as Block, except it also sends a trap to the
designated Trap Recipient informing them of the situation. For more information on broadcast storms,
please refer to the previous chapter.
♦ Broadcast Storm Rising Action Threshold
broadcast packets per second on this port. Once met, the Broadcast Storm Rising Action (above) will be
triggered. The assigned number should be high enough to allow normal broadcast packets (which
comprise significant traffic) to be let through, while being low enough so that broadcast storms can be
detected early. The Rising Threshold can be from 1 to 1488000, with 500 the default.
♦ Broadcast Storm Falling Action This setting will be activated when the Broadcast Storm Rising
Threshold and then the Broadcast Storm Falling Threshold are each met. This setting can be
configured to Do Nothing, Forward, or Forward & Trap. The Do Nothing setting causes the switch to
operate normally, that is, to ignore the situation. If the port had met the Broadcast Storm Rising Action
criteria and started Blocking broadcast packets, it will continue doing so. The Forwarding setting
causes the port to begin forwarding broadcast frames, thus removing the Blocking state imposed by the
Broadcast Storm Rising Action. Forward & Trap performs the same action as Forward, except it also
sends a trap to the designated Trap Recipient informing them of the situation.
♦ Broadcast Storm Falling Action Threshold This setting defines the number of broadcast packets
per second on this port which will trigger the Broadcast Storm Falling Action (above). This threshold
will only trigger an action if the Broadcast Storm Rising Threshold has first been reached. The
assigned number should be high enough to allow normal broadcast packets (which comprise significant
traffic) to be let through as early as possible, while being low enough so that broadcast storms are
completely eliminated. The Falling Threshold can be from 1 to 1488000, with 250 the default.
Press CTRL+S to let the changes take effect. If you wish these changes to be the default for the switch,
return to the main menu and choose Save Changes.
STP Port State (whether the Spanning Tree Protocol is enabled or disabled on this port) and Link Status
reflect the current conditions of the port. They are read-only fields and cannot be changed.
Configure Trunk Groups
Ports on the Switch can be grouped together in a single logical port called a trunk. This is discussed in detail
in the Port Trunking section of the "Switch Management Concepts" chapter of this manual.
To set up a trunk group, choose Configure Trunk Groups on the System Configuration menu. The
following screen appears:
Using the Console Interface
This setting defines a ceiling for the number of
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