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• Admin Path Cost – This parameter is used by the STA 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.) Note that when the Path Cost Method is set to short (page
3-63), the maximum path cost is 65,535.
By default, the system automatically detects the speed and duplex
mode used on each port, and configures the path cost according to the
values shown below. Path cost “0” is used to indicate
auto-configuration mode.
•Range –
- Ethernet: 200,000-20,000,000
- Fast Ethernet: 20,000-2,000,000
- Gigabit Ethernet: 2,000-200,000
- 10 Gigabit Ethernet: 200-20,000
•Default –
- 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
- 10 Gigabit Ethernet – Full duplex: 1000; trunk: 500
• Admin Link Type – The link type attached to this interface.
- Point-to-Point – A connection to exactly one other bridge.
- Shared – A connection to two or more bridges.
- Auto – The switch automatically determines if the interface is
attached to a point-to-point link or to shared media. (This is the
default setting.)
• Admin Edge Port (Fast Forwarding) – You can enable this option if
an interface is attached to a LAN segment that is at the end of a bridged
LAN or to an end node. Since end nodes cannot cause forwarding
loops, they can pass directly through to the spanning tree forwarding
state. Specifying Edge Ports provides quicker convergence for devices