Dell PowerConnect 5224 User Manual - Page 32

www.dell.com | support.dell.com - Forwarding - Port forwards packets, and continues learning addresses. • Designated Cost - The cost for a packet to travel from this port to the root in the current Spanning Tree configuration. The slower the media, the higher the cost. • Designated Bridge - The priority and MAC address of the device through which this port must communicate to reach the root of the Spanning Tree. • Designated Port - The priority and number of the port on the designated bridging device through which this switch must communicate with the root of the Spanning Tree. • Trunk - Indicates whether the port is configured as a trunk member The Port Settings page also contains the following fields that can be edited: • Priority - Defines the priority used for this port in the Spanning Tree Protocol. If the path cost for all ports on a switch is the same, the port with the highest priority (such as, lowest value) is configured as an active link in the Spanning Tree. This makes a port with higher priority less likely to be blocked if the Spanning Tree Protocol is detecting network loops. Where more than one port is assigned the highest priority, the port with lowest numeric identifier is enabled. (Range: 0-240, in steps of 16; Default: 128.) • Path Cost - This parameter is used by the STP to determine the best path between devices. Therefore, lower values should be assigned to ports attached to faster media, and higher values assigned to ports with slower media. Path cost takes precedence over port priority. - Range - Ethernet: 200,000-20,000,000 Fast Ethernet: 20,000-2,000,000 Gigabit Ethernet: 2,000-200,000 - Defaults - Ethernet - half duplex: 2,000,000; full duplex: 1,000,000; trunk: 500,000 Fast Ethernet - half duplex: 200,000; full duplex: 100,000; trunk: 50,000 Gigabit Ethernet - full duplex: 10,000; trunk: 5,000 NOTICE: When the Path Cost Method is set to short, the maximum path cost is 65,535. 32 Addendum to the 32 48 and 5 224 User 's Guides