Linksys SRW224G4P - Manual (Page 45)

Chapter Configuring the Switch
41 24-Port 10/100 + 4-Port Ggabt Swtch wth WebVew and Power over Ethernet
Instance ID Instance identifier of this spanning tree .
(Default: 0)
Included VLANs VLANs assigned this instance .
Brdge Prorty The priority of a spanning tree instance .
(Range: 0-61440 in steps of 4096; Options: 0, 4096, 8192,
12288, 16384, 20480, 24576, 28672, 32768, 36864, 40960,
45056, 49152, 53248, 57344, 61440; Default: 28)
Desgnated Root Brdge ID The bridge priority and
MAC address of the device through which this port must
communicate to reach the root of the Spanning Tree .
Root Port The port priority and number of the port on
the designated bridging device through which this switch
must communicate with the root of the Spanning Tree .
Root Path Cost The contribution of this port to the
path cost of paths towards the spanning tree root which
include this port .
Brdge ID The bridge priority and MAC address of the
device through which this port must communicate to
reach the root of the Spanning Tree .
Remanng Hops The remaining number of hop counts
for the MST instance .
Modify the required attributes for MSTP Instance Settings .
Click Save Settngs to save the changes .
Spanning Tree > MSTP Interface Settings
QoS > MSTP Interface Settings
Instance ID Instance identifier to configure . Select the
required MST instance to display the current spanning
tree values . (Range: 0-4094; Default: 0)
State Shows if STA has been enabled on this interface .
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 .
The rules defining port status are:
A port on a network segment with no other STA
compliant bridging device is always forwarding .
If two ports of a switch are connected to the same
segment and there is no other STA device attached
to this segment, the port with the smaller ID forwards
packets and the other is discarding .
All ports are discarding when the switch is booted,
then some of them change state to learning, and then
to forwarding .
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 Admin Edge Port in STA Port Configuration (i .e .,
true or false), but will be set to false if a BPDU is received,
indicating that another bridge is attached to this port .
Click the Detal button to configure Protocol Migration
Test and Administrative Link Type . Use the check box
and drop-down menu provided to enable and select the
mode, then click Apply .
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