Hirschmann RS20 User Manual page 113

Spanning Tree
If you are using the device in a Multiple Spanning Tree (MSTP) environment,
the device only participates in the Common Spanning Tree (CST) instance.
This chapter of the manual also uses the term Global MST instance to
describe this general case.
Parameter Meaning
STP active Here you can switch Spanning Tree
on or off for this port. If Spanning
Tree is activated globally and
switched off at one port, this port
does not send STP-BPDUs and
drops any STP-BPDUs received.
Note: If you want to use other
layer 2 redundancy protocols such
as HIPER-Ring or Ring/Network
coupling in parallel with Spanning
Tree, make sure you switch off the
ports participating in these protocols
in this dialog for Spanning Tree.
Otherwise the redundancy may not
operate as intended or loops can
result.
Port status (read Displays the STP port status with
only) regard to the global MSTI (IST).
Port priority Here you enter the port priority (the
four highest bits of the port ID) with
regard to the global MSTI (IST) as a
decimal number of the highest byte
of the port ID.
Port path costs Enter the path costs with regard to
the global MSTI (IST) to indicate
preference for redundant paths. If
the value is 0, the Switch
automatically calculates the path
costs for the global MSTI (IST)
depending on the transmission rate.
Table 16: Port-related RSTP settings and displays
UM RedundConfig L2P
Release 8.0 05/2013
6.6 The Rapid Spanning Tree
Possible Values
On, Off
discarding,
learning,
forwarding,
disabled,
manualForwarding,
notParticipate
16 ≤ n·16 ≤ 240
0 - 200,000,000
Protocol
Default Setting
On
-
128
0 (automatically)
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