The following interface attributes can be configured:
> Priority – Defines the priority used for this port in the Spanning Tree Protocol. If
the path cost for all ports on a switch are the same, the port with the highest pri-
ority (i.e., lowest value) will be 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 will be enabled.
- Default: 128
- Range: 0 - 255
> 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.)
>> Full Range: 1-65535
>> Recommended Range –
- Ethernet: 50-600
- Fast Ethernet: 10-60
- Gigabit Ethernet: 3-10
>> Defaults –
- 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 – Since end-nodes cannot cause forwarding loops, they can be pass
quicker convergence for end-node workstations and servers, and also over-
come other STA related timeout problems. (Remember that Fast Link should
only be enabled for ports connected to an end-node device.)
- Default is disabled
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