240
C
HAPTER
11: C
ONFIGURING
S
PANNING
T
REE
If the port is a Boundary port, this field also indicates whether the
device on the other side of the link is working in RSTP or STP mode
■
Master Port
— Indicates the port is a master port. A Master port
provides connectivity from a MSTP region to the outlying CIST root.
■
Role
— Indicates the port role assigned by the STP algorithm to
provide to STP paths. The possible field values are:
■
Root
— Provides the lowest cost path to forward packets to the
root device.
■
Designated
— Indicates the port or LAG through which the
designated device is attached to the LAN.
■
Alternate
— Provides an alternate path to the root device from the
root interface.
■
Backup
— Provides a backup path to the designated port path
toward the Spanning Tree leaves. Backup ports occur only when
two ports are connected in a loop by a point-to-point link or when
a LAN has two or more connections connected to a shared
segment.
■
Disabled
— Indicates the port is not participating in the Spanning
Tree.
■
Mode
— Indicates the STP mode by which STP is enabled on the
device. The possible field values are:
■
Classic STP
— Classic STP is enabled on the device. This is the
default value.
■
Rapid STP
— Rapid STP is enabled on the device.
■
Multiple STP
— Multiple STP is enabled on the device.
■
Interface Priority
— Defines the interface priority for the specified
instance. The field range is 0-240. The default value is 128.
■
Path Cost
— Indicates the port contribution to the Spanning Tree
instance. The range should always be 1-200,000,000.
■
Designated Bridge ID
— Displays the ID of the bridge that connects
the link or shared LAN to the root.
■
Designated Port ID
— Displays the ID of the port on the designated
bridge that connects the link or the shared LAN to the root.
■
Designated Cost
— Indicates that the default path cost is assigned
according to the method selected on the Spanning Tree Global
Settings page.
Summary of Contents for 3CRUS2475 24
Page 137: ...Defining LAG Membership 137...
Page 139: ...139 Defining Voice VLAN Defining GVRP...
Page 194: ...194 CHAPTER 9 CONFIGURING IP INFORMATION Static Indicates the ARP entry is a static entry...
Page 197: ...Defining ARP Interface Settings 197 Unchecked Maintains the current ARP entries...
Page 321: ...320 APPENDIX C TROUBLESHOOTING...
Page 329: ...328 APPENDIX GLOSSARY...
