xStack® DGS-3120 Series Managed Switch Web UI Reference Guide
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P2P
Choosing the
True
parameter indicates a point-to-point (P2P) shared link. P2P ports
are similar to edge ports; however they are restricted in that a P2P port must operate
in full duplex. Like edge ports, P2P ports transition to a forwarding state rapidly thus
benefiting from RSTP. A P2P value of
False
indicates that the port cannot have P2P
status.
Auto
allows the port to have P2P status whenever possible and operate as if
the P2P status were
True
. If the port cannot maintain this status, (for example if the
port is forced to half-duplex operation) the P2P status changes to operate as if the
P2P value were
False
. The default setting for this parameter is
Auto
.
Restricted TCN
Topology Change Notification is a simple BPDU that a bridge sends out to its root
port to signal a topology change. Restricted TCN can be toggled between
True
and
False
. If set to
True
, this stops the port from propagating received topology change
notifications and topology changes to other ports. The default is
False
.
Migrate
When operating in RSTP mode, selecting
Yes
forces the port that has been selected
to transmit RSTP BPDUs.
Port STP
This drop-down menu allows you to enable or disable STP for the selected group of
ports. The default is
Enabled
.
Forward BPDU
Use the pull-down menu to enable or disable the flooding of BPDU packets when
STP is disabled.
Edge
Choosing the
True
parameter designates the port as an edge port. Edge ports cannot
create loops, however an edge port can lose edge port status if a topology change
creates a potential for a loop. An edge port normally should not receive BPDU
packets. If a BPDU packet is received, it automatically loses edge port status.
Choosing the
False
parameter indicates that the port does not have edge port status.
Alternatively, the
Auto
option is available.
Restricted Role
Use the drop-down menu to toggle Restricted Role between
True
and
False
. If set to
True
, the port will never be selected to be the Root port. The default is
False
.
Click the
Apply
button to accept the changes made.
MST Configuration Identification
This window allows the user to configure a MSTI instance on the Switch. These settings will uniquely identify a
multiple spanning tree instance set on the Switch. The Switch initially possesses one
CIST, or Common Internal
Spanning Tree, of which the user may modify the parameters for but cannot change the MSTI ID for, and cannot be
deleted.
To view the following window, click
L2 Features > Spanning Tree > MST Configuration Identification
, as show
below:
Figure 4–30 MST Configuration Identification window
The fields that can be configured are described below:
Summary of Contents for DGS-3120-24PC-EI
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