Comnet CNGE11FX3TX8MS, Инструкция по установке и эксплуатации

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INS_CNGE11FX3TX8MS[POE][HO] Rev. 11.6.17 PAGE 92
INSTRUCTION MANUAL CNGE11FX3TX8MS[POE][HO]
TECH SUPPORT: 1.888.678.9427
CIST Ports
This page allows the user to inspect the current STP CIST port configurations, and possibly change
them as well.
This page contains settings for physical and aggregated ports.
Object Description
Port The switch port number of the logical STP port.
STP Enabled Controls whether STP is enabled on this switch port.
Path Cost Controls the path cost incurred by the port. The Auto setting will set the path cost as appropriate by
the physical link speed, using the 802.1D recommended values. Using the Specific setting, a user-
defined value can be entered. The path cost is used when establishing the active topology of the
network. Lower path cost ports are chosen as forwarding ports in favor of higher path cost ports.
Valid values are in the range 1 to 200000000.
Priority Controls the port priority. This can be used to control priority of ports having identical port cost.
(See above).
operEdge
(state flag) Operational flag describing whether the port is connecting directly to edge devices. (No Bridges
attached). Transition to the forwarding state is faster for edge ports (having operEdge true) than
for other ports. The value of this flag is based on AdminEdge and AutoEdge fields. This flag is
displayed as Edge in Monitor->Spanning Tree -> STP Detailed Bridge Status.
AdminEdge Controls whether the operEdge flag should start as set or cleared. (The initial operEdge state when
a port is initialized).
AutoEdge Controls whether the bridge should enable automatic edge detection on the bridge port. This
allows operEdge to be derived from whether BPDU’s are received on the port or not.
Restricted Role If enabled, causes the port not to 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, possibly because those bridges are not under the full control of the
administrator. This feature is also known as Root Guard.