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C
ONFIGURING
THE
S
WITCH
2-96
Root Device Configuration
•
Hello Time
– Interval (in seconds) at which this device transmits a
configuration message.
- Default: 2
- Minimum: 1
- Maximum: The lower of 10 or [(Max. Message Age / 2) -1]
•
Maximum Age
– The maximum time (in seconds) a device can wait
without receiving a configuration message before attempting to
reconfigure. All device ports (except for designated ports) should
receive configuration messages at regular intervals. Any port that ages
out STA information (provided in the last configuration message)
becomes the designated port for the attached LAN. If it is a root port,
a new root port is selected from among the device ports attached to the
network. (References to “ports” in this section mean “interfaces,”
which includes both ports and trunks.)
- Default: 20
- Minimum: The higher of 6 or [2 x (Hello Time + 1)]
- Maximum: The lower of 40 or [2 x (Forward Delay - 1)]
•
Forward Delay
– The maximum time (in seconds) this device will
wait before changing states (i.e., discarding to learning to forwarding).
This delay is required because every device must receive information
about topology changes before it starts to forward frames. In addition,
each port needs time to listen for conflicting information that would
make it return to a discarding state; otherwise, temporary data loops
might result.
- Default: 15
- Minimum: The higher of 4 or [(Max. Message Age / 2) + 1]
- Maximum: 30
Summary of Contents for 6724AL2
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Page 404: ...COMMAND LINE INTERFACE 3 216 ...
Page 406: ...TROUBLESHOOTING A 2 ...
Page 418: ...GLOSSARY Glossary 8 ...
Page 422: ...INDEX Index 4 ...
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