LevelOne GEP-5070, User Manual

Page: 258 / 318

C
HAPTER
5
| Monitoring the Switch
Displaying Information on the Spanning Tree
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P
ARAMETERS
These parameters are displayed:
◆
Port – Port Identifier.
◆
CIST 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 an alternate or backup port that may provide
connectivity if other bridges, bridge ports, or LANs fail or are removed.
◆
CIST State – Displays current state of this port within the Spanning
Tree:
■
Blocking – Port receives STA configuration messages, but does not
forward packets.
■
Learning – Port has transmitted configuration messages for an
interval set by the Forward Delay parameter without receiving
contradictory information. Port address table is cleared, and the
port begins learning addresses.
■
Forwarding – Port forwards packets, and continues learning
addresses.
◆
Uptime – The time since the bridge port was last initialized.
W
EB
I
NTERFACE
To display information on spanning tree port status, click Monitor, Spanning
Tree, Port Status.
Figure 128: Spanning Tree Port Status
D
ISPLAYING
P
ORT
S
TATISTICS FOR
STA
Use the Port Statistics page to display statistics on spanning tree protocol
packets crossing each port.
P
ATH
Monitor, Spanning Tree, Port Statistics
P
ARAMETERS
These parameters are displayed:
◆
Port – Port Identifier.
◆
MSTP – The number of MSTP Configuration BPDU's received/
transmitted on a port.