User Manual

Configure Switching Information
152
M4100 Series Managed Switch
• Spanning Tree Maximum Hops. Specifies the maximum number of bridge hops the
information for a particular CST instance can travel before being discarded. The valid
range is 1–127.
• Spanning T
ree Tx Hold Count. Configures the maximum number of BPDUs the
bridge is allowed to send within the hello time window. The default value is 6.
The following table describes the nonconfigurable information displayed on the screen.
Table 44. CST Status
Field Description
Bridge identifier The bridge identifier for the CST. It is made up using the bridge priority
and the base MAC address of the bridge.
Time since topology change The time in seconds since the topology of the CST last changed.
Topology change count Number of times topology has changed for the CST.
Topology change The value of the topology change parameter for the switch indicating if
a topology change is in progress on any port assigned to the CST
. It
takes a value if True or False.
Designated root The bridge identifier of the root bridge. It is made up from the bridge
priority and the base MAC address of the bridge.
Root Path Cost Path cost to the designated root for the CST.
Root Port Identifier Port to access the designated root for the CST.
Max Age(secs) Path cost to the designated root for the CST.
Forward Delay(secs) Derived value of the root port bridge forward delay parameter.
Hold Time(secs) Minimum time between transmission of configuration BPDUs.
CST Regional Root Priority and base MAC address of the CST regional root.
CST Path Cost Path cost to the CST tree regional root.
Configure CST Ports
You can configure the Common Spanning Tree (CST) and Internal Spanning Tree on a
specific port on the switch.
 To configure CST ports:
1. Prepare your computer with a static IP address in the 169.254.100.0 subnet, for
example, 169.254.100.201.
2. Connect an Ethernet cable from an Ethernet port on your computer to an Ethernet port on
the switch.
3. Launch a web browser
.
4. Enter the IP address of the switch in the web browser address field.