Installation manual

3-166
SIGNAMAX LLC • www.signamax.eu
• Oper Path Cost – This parameter is used by the STA to determine the best path
between devices. Therefore, lower values should be assigned to ports attached to faster
media, and higher values assigned to ports with slower media. (Path cost takes
precedence over port priority.)
• Oper Link Type – The operational point-to-point status of the LAN segment attached to
this interface. This parameter is determined by manual configuration or by
auto-detection, as described for Admin Link Type in STA Port Configuration on
page 3-168.
• Oper Edge Port – This parameter is initialized to the setting for Admin Edge Port in STA
Port Configuration on page 3-168 (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.
• Port 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.
• Trunk Member – Indicates if a port is a member of a trunk. (STA Port Information only)
These additional parameters are only displayed for the CLI:
• Admin Status – Shows if this interface is enabled.
Alternate port receives more
useful BPDUs from another
bridge and is therefore not
selected as the designated
port.
x
R: Root Port
A: Alternate Port
D: Designated Port
B: Backup Port
RR
ADB
Backup port receives more
useful BPDUs from the same
bridge and is therefore not
selected as the designated
port.
x
RR
ADB