User`s guide

8-port Gigabit Ethernet Switch User’s Guide
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Figure 7-42. STP Port Settings screen
Items on the screen above include:
• Cost – A port cost can be set between 1 and 65535. The lower the cost, the greater the probability the port will be
chosen as the designated port (chosen to forward packets).
• Priority – A port priority can be set between 0 and 255. The lower the priority, the greater the probability the
port will be chosen as the root port.
• Status – Displays the status for the corresponding port.
• Group Name – Displays the previously assigned name for the STP group the corresponding port belongs to.
• Fast STP – Allows you to set the delay to Enabled or Disabled.
Port Trunking
Port trunks can be used to increase the bandwidth of a network connection or to ensure fault recovery. You can configure up
to 4 trunk connections (combining 2 to 8 ports into a fat pipe) between any two DGS-3308 or other Layer 2 switches.
However, before making any physical connections between devices, use the Trunk Configuration menu to specify the trunk
on the devices at both ends. When using a port trunk, note that:
• The ports used in a trunk must all be of the same media type (RJ-45, 100 Mbps fiber, or 1000 Mbps fiber).
The ports that can be assigned to the same trunk have certain other restrictions (see below).
• Ports can only be assigned to one trunk.
• The ports at both ends of a connection must be configured as trunk ports.
• None of the ports in a trunk can be configured as a mirror source port or a mirror target port.
• All of the ports in a trunk have to be treated as a whole when moved from/to, added or deleted from a VLAN.
• The Spanning Tree Protocol will treat all the ports in a trunk as a whole.