Netgear GS728TP User Manual download pdf (Page 147)

Configuring Switching Information

147

ProSafe M5300 Switch

the value must be less than or equal to (2 * Bridge Forward Delay) – 1 and greater

than or equal to 2 * (Bridge Hello Time +1). The default value is 20.

• Bridge Hello Time (secs) - Specifies the bridge Hello time for the Common and

Internal Spanning Tree (CST), which indicates the amount of time in seconds a root

bridge waits between configuration messages. The value is fixed at 2 seconds. The

value must be less than or equal to (Bridge Max Age / 2) - 1. The default hello time

value is 2.

• Bridge Forward Delay (secs) - Specifies the bridge forward delay time, which

indicates the amount of time in seconds a bridge remains in a listening and learning

state before forwarding packets. The value must be greater or equal to (Bridge Max

Age / 2) + 1. The time range is from 4 seconds to 30 seconds. The default value is 15.

• 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 Tree 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.

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.

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Netgear GS728TP User Manual Page 147