Table 7: Default Stp Path Costs - Edge-Core ECS4310-26T Management Manual

| Spanning Tree
C 10
HAPTER
Configuring STP Port Settings

Table 7: Default STP Path Costs

Port Type
Ethernet
Fast Ethernet
Gigabit Ethernet
◆ 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 priority (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.
(Range: 0-240, in steps of 16; Default: 128)
P2P — The link type attached to an interface can be set to
◆
automatically detect the link type, or manually configured as point-to-
point or shared medium. Transition to the forwarding state is faster for
point-to-point links than for shared media. These options are described
below:
Auto — The switch automatically determines if the interface is
■
attached to a point-to-point link or to shared medium. (This is the
default setting.)
True — A point-to-point connection to exactly one other bridge.
■
False — A shared connection to two or more bridges.
■
Edge (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 such as
workstations or servers, retains the current forwarding database to
reduce the amount of frame flooding required to rebuild address tables
during reconfiguration events, does not cause the spanning tree to
initiate reconfiguration when the interface changes state, and also
overcomes other STP-related timeout problems. However, remember
that this feature should only be enabled for ports connected to an end-
node device. (Default: False)
State — Displays current state of this port within the Spanning Tree:
◆
Disabled — There is no connection on the port.
■
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Link Type IEEE 802.1w-2001
Half Duplex 2,000,000
Full Duplex 1,000,000
Trunk 500,000
Half Duplex 200,000
Full Duplex 100,000
Trunk 50,000
Full Duplex 10,000
Trunk
5,000