S
PANNING
T
REE
A
LGORITHM
C
ONFIGURATION
3-137
-
All ports are discarding when the switch is booted, then some of
them change state to learning, and then to forwarding.
•
Forward Transitions
– The number of times this port has
transitioned from the Learning state to the Forwarding state.
•
Designated Cost
– The cost for a packet to travel from this port to
the root in the current Spanning Tree configuration. The slower the
media, the higher the cost.
•
Designated Bridge
– The bridge priority and MAC address of the
device through which this port must communicate to reach the root of
the Spanning Tree.
•
Designated Port
– The port priority and number of the port on the
designated bridging device through which this switch must
communicate with the root of the Spanning Tree.
•
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 3-140.
•
Oper Edge Port
– This parameter is initialized to the setting for
Admin Edge Port in STA Port Configuration on page 3-140 (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 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.
Summary of Contents for 8612XL3
Page 2: ......
Page 26: ...CONTENTS xxvi ...
Page 40: ...INTRODUCTION 1 14 ...
Page 69: ...BASIC CONFIGURATION 3 15 ...
Page 175: ...PORT CONFIGURATION 3 121 ...
Page 337: ...IP ROUTING 3 283 Web Click Routing Protocol RIP Statistics ...
Page 379: ...MULTICAST ROUTING 3 325 Command Usage ...
Page 396: ...CONFIGURING THE SWITCH 3 342 ...
Page 582: ...COMMAND LINE INTERFACE 4 186 ...
Page 806: ... 224 Command Mode Privileged Exec Example Console clear vrrp 1 interface 1 counters Console ...
Page 826: ... 6 ...
Page 828: ...TROUBLESHOOTING B 2 ...
Page 838: ...GLOSSARY Glossary 10 ...
Page 845: ......