Publication date: Jan., 2009
Revision A1
105
Parameter description:
Priority: The priority parameter used in the CIST(Common and Internal
Spanning Tree) connection.
0 / 4096 / 8192 / 12288 / 16384 / 20480 / 24576 / 28672 / 32768 / 36864
/ 40960 / 45056 / 49152 / 53248 / 57344 / 61440
MAX. Age:
6-40sec. The same definition as in the RSTP protocol.
Forward Delay:
4-30sec. The same definition as in the RSTP protocol.
MAX. Hops:
6-40sec. It’s a new parameter for the multiple spanning tree protocol. It is
used in the internal spanning tree instances. “CIST Remaining Hops” or
“MSTI Remaining Hops” in the Spanning tree protocol message would
decreased by one when the message is propagated to the neighboring
bridge. If the Remaining Hops in a message is zero, the message (BPDU)
would be regarded as invalid. Max Hops is used to specify the initial
value of the Remaining Hops for Regional Root Bridge (Either CIST
Regional Root or MSTI Regional Root)
Fig. 3-56
Parameter description:
Port:
1-10
Path Cost:
1 – 200,000,000
The same definition as in the RSTP specification. But in MSTP, this
parameter can be respectively applied to ports of CIST and ports of any
MSTI.
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