Port States - Hirschmann RS20 User Manual

Spanning Tree
6.6.2

Port states

Depending on the tree structure and the state of the selected connection
paths, the RSTP assigns the ports their states.
STP port state Administrative
bridge port
state
DISABLED Disabled
DISABLED Enabled
BLOCKING Enabled
LISTENING Enabled
LEARNING Enabled
FORWARDING Enabled
Table 14: Relationship between port state values for STP and RSTP.
a. The dot1d-MIB displays "Disabled"
b. The dot1d-MIB displays "Blocked"
Meaning of the RSTP port states:

Disabled: Port does not belong to the active topology
 Discarding: No address learning in FDB, no data traffic except for
STP BPDUs

Learning: Address learning active (FDB) and no data traffic except for
STP BPDUs
 Forwarding: Address learning is active (FDB), sending and receipt of all
frame types (not only STP BPDUs)
UM RedundConfig L2P
Release 8.0 05/2013
MAC RSTP
operational Port state
FALSE Discarding
FALSE Discarding
TRUE Discarding
TRUE Discarding
TRUE Learning
TRUE Forwarding
6.6 The Rapid Spanning Tree
Active topology
(port role)
a
Excluded (disabled)
a
Excluded (disabled)
b
Excluded (alternate, backup)
b
Included (root, designated)
Included (root, designated)
Included (root, designated)
Protocol
105