ICP DAS USA MSM-6226 user manual Instance Config

Fig. 3-43.5 Instance Config

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)