HP 445860-B21 - 10Gb Ethernet BL-c Switch Command Reference Manual page 48

Table 23 Rapid Spanning Tree parameter descriptions
Parameter
Priority (port)
Cost
State
Role
Designated bridge
Designated port
Type
Description
The port priority parameter helps determine which bridge port becomes the designated
port. In a network topology that has multiple bridge ports connected to a single
segment, the port with the lowest port priority becomes the designated port for the
segment.
The port path cost parameter is used to help determine the designated port for a
segment. Generally speaking, the faster the port, the lower the path cost. A setting of
zero (0) indicates that the cost will be set to the appropriate default after the link speed
has been auto-negotiated.
Shows the current state of the port. The State field in RSTP/MSTP mode can be one of
the following: Discarding (DISC), Learning (LRN), Forwarding (FWD), or Disabled
(DSB).
Shows the current role of this port in the Spanning Tree. The port role can be one of the
following: Designated (DESG), Root (ROOT), Alternate (ALTN), Backup (BKUP), Master
(MAST), or Unknown (UNK).
Shows information about the bridge connected to each port, if applicable. Information
includes the priority (hex) and MAC address of the Designated Bridge.
The port ID of the port on the Designated Bridge to which this port is connected.
Type of link connected to the port, and whether the port is an edge port. Link type
values are AUTO, P2P, or SHARED.
MSTP: The Type field appears in /info/cist.
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