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Chapter, Configuring the switch – Linksys SRW224G4P User Manual

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Chapter

Configuring the Switch

8

24-Port 10/100 + 4-Port Ggabt Swtch wth WebVew and Power over Ethernet

The Port Information displays the current status of the
ports in the Spanning Tree .

Port

Displays the port number .

State

Shows if Spanning Tree has been enabled on this

interface . To enable STP on a port click the state checkbox
for that port then click Save Settings to save the changes .

Status

Displays current state of this port within the

Spanning Tree:

Dscardng

Port receives STA configuration messages,

but does not forward packets .

Learnng

Port 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 .

Forwardng

Port forwards packets, and continues

learning addresses .

Role

Roles are assigned according to whether the port

is part of the active topology connecting the bridge to
the root bridge (i .e ., root port), connecting a LAN through
the bridge to the root bridge (i .e ., designated port), or is
the MSTI regional root (i .e ., master port); or is an alternate
or backup port that may provide connectivity if other
bridges, bridge ports, or LANs fail or are removed . The role
is set to disabled (i .e ., disabled port) if a port has no role
within the spanning tree .

Forward Transtons

The number of times this port has

transitioned from the Learning state to the Forwarding
state .

Operatonal Edge Port

This parameter is initialized

to the setting for Administrative Edge Port in STP Port
Setting detail, but will be set to false if a BPDU is received
indicating that another bridge is attached to this port .

Click on Detal to configure STP Port Settings for an
interface .

Click Detal to configure Path Cost, Priority, Administrative
Edge Port (Fast Forwarding), and Administrative Link Type .
Use the text fields provided to edit the values, then click
Apply .

Spanning Tree > STP Port Settings > STP Port Setting Detail

Desgnated Cost

The cost for a packet to travel from this

port to the root in the current Spanning Tree configuration .
The slower the media, the higher the cost .

Desgnated Port

The port priority and number of the

port on the designated bridging device through which the
Switch must communicate with the root of the Spanning
Tree .

Desgnated Brdge

The bridge priority and MAC address

of the device through which this port must communicate
to reach the root of the Spanning Tree .

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 .)

NOTE:

When the Path Cost Method is set to

“short,” the maximum path cost is 65,535 .

Range –

Ethernet: 200,000-20,000,000

Fast Ethernet: 20,000-2,000,000

Gigabit Ethernet: 2,000-200,000

Default –

Ethernet – Half duplex: 2,000,000; full duplex: 1,000,000;
LAG: 500,000

Fast Ethernet – Half duplex: 200,000; full duplex: 100,000;
LAG: 50,000

Gigabit Ethernet – Full duplex: 10,000; LAG: 5,000