User’s Manual of MGSW-24160F
148
to the similar bridge setting, the port Edge status doesn’t affect this setting.
A port entering error-disabled state due to this setting is subject to the bridge Port
Error Recov
ery setting as well.
Point2Point
Controls whether the port connects to a point-to-point LAN rather than a shared
medium. This can be automatically determined, or forced either true or false.
Transition to the forward state is faster for point-to-point LANs than for shared
media.
(This applies to physical ports only. Aggregations are always forced Point2Point).
Buttons
: Click to save changes.
: Click to undo any changes made locally and revert to previously saved values.
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. When the short path cost
method is selected and the default path cost recommended by the IEEE 8021w standard exceeds 65,535, the default is set to
65,535.
Port Type IEEE 802.1D-1998 IEEE 802.1w-2001
Ethernet
50-600 200,000-20,000,000
Fast Ethernet
10-60 20,000-2,000,000
Gigabit Ethernet
3-10 2,000-200,000
Table 4-7-1 Recommended STP Path Cost Range
Port Type Link Type IEEE 802.1D-1998 IEEE 802.1w-2001
Ethernet
Half Duplex
Full Duplex
Trunk
100
95
90
2,000,000
1,999,999
1,000,000
Fast Ethernet
Half Duplex
Full Duplex
Trunk
19
18
15
200,000
100,000
50,000
Gigabit Ethernet
Full Duplex
Trunk
4
3
10,000
5,000
Table 4-7-2 Recommended STP Path Costs
Port Type Link Type IEEE 802.1w-2001
Ethernet
Half Duplex
Full Duplex
Trunk
2,000,000
1,000,000
500,000
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