Back to Contents Page

Spanning Tree/Port Settings Page:
Dell™ PowerEdge™ 1655MC Integrated Switch User's Guide

Port Settings

In the Port Settings page, you can specify Spanning Tree parameters for each port. This page is in table format.

The following STP parameters are displayed for each port:

• Type — the type of port, indicates one of the following:
  • 1000Base-SX — Port 1 - 6 are 1000Base-SX fiber ports connected to the server blades.
  • 1000Base-TX — Port 7 - 10 are 10/100/1000Base-T RJ-45 uplink ports.
  • 100Base-TX — Port 11 is the 10/100Base-TX port attached to the remote access module in the chassis.
    
• State — displays the current state of this port within the Spanning Tree:
  • Disabled — port has been disabled by the user or has failed diagnostics.
  • Blocking — port receives STP configuration messages, but does not forward packets.
  • Listening — port will leave blocking state due to topology change, starts transmitting configuration messages, but does not yet forward packets.
  • Learning — has transmitted configuration messages for an interval set by the Forward Delay parameter without receiving contradictory information. Port address table is cleared, and the port begins learning addresses.
  • Forwarding — the port forwards packets, and continues learning addresses.
  • Broken — Port is malfunctioning or no link has been established.
• Trunk — indicates if the port is configured as a trunk member.

The following STP parameters may be edited for each port:

• Priority — Priority assigned to this port for the Spanning Tree Protocol. A port with a higher priority is less likely to be blocked if the Spanning Tree Protocol is detecting network loops. Low numeric value indicates a high priority.
  • Range: 0-255
  • Default: 128
• Cost — Cost assigned to this port for the Spanning Tree Protocol. A port with a lower cost is less likely to be blocked if the Spanning Tree Protocol is detecting network loops.
  • Full Range: 1-65535
  • Recommended Range –
    • Ethernet: 50-600
    • Fast Ethernet: 10-60
    • Gigabit Ethernet: 3-10
  • Default –
    • Ethernet – half duplex: 100; full duplex: 95; trunk: 90
    • Fast Ethernet – half duplex: 19; full duplex: 18; trunk: 15
    • Gigabit Ethernet – full duplex: 4; trunk: 3
• Fast Link — Fast Link immediately enables the port in forwarding state when a link comes up. The port is not part of the Spanning Tree at that time, but will participate in future Spanning Tree resolutions.
  • Default –
    • Port 1-6: enabled
    • Port 7-11: disabled

NOTE: Fast Link is useful if a device is connected to a port that requires network access immediately when the link comes up and cannot wait for Spanning Tree resolution.

CLI Commands

The following is a summary of the equivalent CLI commands for items in the Spanning Tree/Port Settings web page.

Example

 Back to Contents Page