8- and 24-Port Gigabit L2 Managed Power-over-Ethernet (PoE) Switches
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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).
Figure 4-155. Port Config.
Parameter description:
Port: 1–8
Path Cost: 1– 200,000,000
This has 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.
Priority: 0/16/32/48/64/80/96/112/128/144/160/176/192/208/224/240
This has 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.
Hello Time: 1/2
In contrast with RSTP, Hello Time in MSTP is a per port setting for the CIST.
Admin Edge: Yes/No
This has the same definition as in the RSTP specification for the CIST ports.
Admin P2P: Auto/True/False
This has the same definition as in the RSTP specification for the CIST ports.
Restricted Role: Yes/No
“Yes” causes the Port not to be selected as Root Port for the CIST or any MSTI, even if it has the best spanning tree priority vector.
Such a Port will be selected as an Alternate Port after the Root Port is selected. This parameter is “No” by default. If set, it can cause
lack of spanning tree connectivity. It is set by a network administrator to prevent bridges external to a core region of the network
influencing the spanning tree active topology, possibly because those bridges are not under the full control of the administrator.