Supermicro SuperBlade SBM-GEM-X2C, Руководство пользователя

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Chapter 6: 1-Gb Ethernet Switch Firmware
Root Status
The settings for R
OOT
S
TATUS
are shown below:
• Designated Root Bridge – The bridge identifier of the root of the spanning tree is
determined by the RSTP protocol as executed by this node. The bridge identifier
value is used as the Root Identifier parameter in all configuration Bridge PDUs
originated by this node.
• Max Age – This indicates the maximum age of the root bridge. This is the maximum
age of spanning tree protocol information learned from the network on any port
before it is discarded, in units of hundredths of a second. This is the actual value
that this bridge is currently using.
• Hello Time – This indicates the amount of hello time of the root bridge. Hello time is
the amount of time between the transmission of configuration Bridge PDUs by this
node on any port when it is the root of the spanning tree or trying to become so, in
units of hundredths of a second.
• Forward Delay – This indicates the amount of forward delay of the root bridge.
Forward delay is a time value, measured in units of hundredths of a second, which
controls how fast a port changes its state. The value determines how long the port
stays in each of the listening and learning states, which precede the forward state.
This value is also used to age all dynamic entries in the forwarding databases when
a topology change has been detected and is underway.
Bridge Setting
Settings for Bridge Setting are shown below:
• Priority – This configures the priority of the current bridge.
• Max Age – This configures the maximum age of the current bridge. This is the
maximum age of spanning tree protocol information learned from the network on
any port before it is discarded, in units of hundredths of a second. This is the actual
value that this bridge is currently using.
• Hello Time – This indicates the amount of hello time of the current bridge. Hello
time is the amount of time between the transmission of configuration Bridge PDUs
by this node on any port when it is the root of the spanning tree or trying to become
so, in units of hundredths of a second.
• Forward Delay – This indicates the amount of forward delay of the current bridge.
Forward delay is a time value, measured in units of hundredths of a second, which
controls how fast a port changes its state. This value determines how long the port
stays in each of the listening and learning states, which precede the forward state.
This value is also used to age all dynamic entries in the forwarding databases when
a topology change has been detected and is underway.