User Manual Managed Switches
72
Auto Edge
Setting
Description
Factory Default
Checked /
Unchecked
Check to enable the bridge to detect edges at the bridge
port automatically. This allows operEdge to be derived
from whether BPDUs are received on the port or not.
Checked
Restricted Role
Setting
Description
Factory Default
Checked /
Unchecked
When checked, the port will not be selected as root port
for the CIST or any MSTI, even if it has the best spanning
tree priority vector. Such a port will be selected as an
alternate port after the root port has been selected. If set,
it can cause lack of spanning tree connectivity. It can be
set by a network administrator to prevent bridges external
to a core region of the network influence the spanning
tree active topology, because those bridges are not under
the full control of the administrator. This feature is also
known as Root Guard.
Unchecked
Restricted TCN
Setting
Description
Factory Default
Checked /
Unchecked
When checked, the port will not propagate received
topology change notifications and topology changes to
other ports. If set, it can cause temporary loss of
connectivity after changes in spanning tree
’s active
topology as a result of persistently incorrect learned
station location information. It is set by a network
administrator to prevent bridges external to a core region
of the network, causing address flushing in that region,
possibly because those bridges are not under the full
control of the administrator or the physical link state of the
attached LANs transits frequently.
Unchecked
BPDU Guard
Setting
Description
Factory Default
Checked /
Unchecked
If checked, causes the port to disable itself upon
receiving valid BPDUs. Contrary to the similar bridge
setting, the port Edge status does not effect this setting.
Unchecked
Point-to-Point
Setting
Description
Factory Default
Auto
Automatic detection if the link port is point to point or not
(connected to a point-to-point LAN or to a shared media).
Auto
Forced True
The port link is point to point and then is a candidate for
rapid transition to the forwarding state.
Forced False
The port link is not point to point.
3.6.4.7 MSTI Ports
NOTE:
This page only has to be programmed if the redundancy protocol programmed is MSTP. It is
not applicable to STP/RSTP.
