D-Link DGS-3208TG User Guide - Page 49

Con GBIC Ports, Port Lock, Broadcast Storm, Save Changes, Port Configuration, GBIC Port

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Gigabit Ethernet Switch User's Guide ♦ Port Lock When enabled, stops automatic learning for all stations connected to the port. Entries in the Forwarding Table for all devices connected to the port will age out. The only traffic this port will allow is traffic from machines whose MAC addresses are manually entered in the Static Forwarding Table. ♦ Broadcast Storm As a broadcast storm develops, the number of broadcast packets received on a port increases steadily. The Broadcast Storm controls make it possible to (1) prevent a broadcast storm from spreading from one port to others, and (2) restore normal forwarding of broadcast packets when the storm has abated. The Rising Action control and its associated Threshold control specify what action (if any) the Switch should take when broadcast traffic received on the port increases to or exceeds the equivalent of a specified number of broadcast packets per second. The threshold can be set to 1 to 1,488,000 packets per second (the default is 500); the rising action can be set to Do Nothing (this is the default), Block (that is, discard all broadcast packets received on the port), or Block & Trap (discard all broadcast packets received on the port and send a trap to the trap manager[s]). The Falling Action control and its associated Threshold control specify what action (if any) the Switch should take when broadcast traffic received on the port, after reaching or exceeding the "rising action" threshold, decreases to or falls below the equivalent of a specified number of broadcast packets per second. The threshold can be set to 1 to 1,488,000 packets per second (the default is 250); the falling action can be set to Do Nothing (this is the default), Forward (that is, discontinue blocking of broadcast packets received on the port), or Forward & Trap (discontinue blocking of broadcast packets received on the port and send a trap to the trap manager[s]). 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 Status reflect the current conditions of the port. They are read-only fields and cannot be changed. Configure GBIC Ports Figure 6-14. GBIC Port Configuration screen See the descriptions for the Port Configuration screen in the previous section. Note that on the GBIC Port Configuration screen above, Speed/Duplex will always read 1000M/Full. 37

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Gigabit Ethernet Switch User’s Guide
37
♦
Port Lock
When enabled, stops automatic learning for all stations connected to the port. Entries in the
Forwarding Table for all devices connected to the port will age out. The only traffic this port will allow is
traffic from machines whose MAC addresses are manually entered in the Static Forwarding Table.
♦
Broadcast Storm
As a broadcast storm develops, the number of broadcast packets received on a port
increases steadily. The Broadcast Storm controls make it possible to (1) prevent a broadcast storm from
spreading from one port to others, and (2) restore normal forwarding of broadcast packets when the
storm has abated.
The Rising Action control and its associated Threshold control specify what action (if any) the Switch
should take when broadcast traffic received on the port increases to or exceeds the equivalent of a
specified number of broadcast packets per second. The threshold can be set to 1 to 1,488,000 packets per
second (the default is 500); the rising action can be set to
Do Nothing
(this is the default),
Block
(that is,
discard all broadcast packets received on the port), or
Block & Trap
(discard all broadcast packets
received on the port and send a trap to the trap manager[s]).
The Falling Action control and its associated Threshold control specify what action (if any) the Switch
should take when broadcast traffic received on the port, after reaching or exceeding the “rising action”
threshold, decreases to or falls below the equivalent of a specified number of broadcast packets per
second. The threshold can be set to 1 to 1,488,000 packets per second (the default is 250); the falling
action can be set to
Do Nothing
(this is the default),
Forward
(that is, discontinue blocking of broadcast
packets received on the port), or
Forward & Trap
(discontinue blocking of broadcast packets received on
the port and send a trap to the trap manager[s]).
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 Status reflect the
current conditions of the port. They are read-only fields and cannot be changed.
Configure GBIC Ports
Figure 6-14.
GBIC Port Configuration screen
See the descriptions for the
Port Configuration
screen in the previous section. Note that on the
GBIC Port
Configuration
screen above, Speed/Duplex will always read
1000M/Full
.