Cambium Networks PTP 820 Series, Руководство пользователя

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Chapter 8: Ethernet Protocols Configuring MSTP
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Page 8-31
Parameter Definition
CIST Port Role The port's current role in the CIST.
Transient port roles may be:
•
Blocking – The port does not send or receive traffic, but does receive
BPDUs.
•
Learning – The port receives traffic but does not forward the traffic.
The port learns the source MAC addresses of incoming frames.
•
Listening – The port monitors BPDUs, but does not forward traffic
and does not learn the source MAC addresses of incoming frames.
•
Final port roles may be:
•
Disabled – The port is in Operational - Down state and is not included
in the MSTP calculation.
•
Designated – The port is in Operational - Up state and has been
designated to forward traffic.
•
Root – The port is forwarding traffic towards the root bridge.
•
Alternate – The port is not forwarding traffic (blocked) but can
become a Designated port after MSTP calculation.
CIST Port CIST Regional Route
ID The Bridge ID of the current CIST Regional Root.
CIST Port CIST Path Cost The CIST path cost from the transmitting bridge to the CIST regional root.
If the transmitting bridge is the CIST regional root, the value of this
parameter will be 0.
CIST Port Hello Time The port's Hello Time timer parameter value, for the CIST (in cs).
CIST Port Protocol Migration The current value of the mcheck variable for the port.
Note: Migration support is planned for future release.
CIST Port MAC Oper State The current state of the port's MAC operational parameter. True indicates
the MAC is operational.
CIST Port Uptime The number of seconds that have elapsed since the port was last reset or
initialized.
Viewing and Configuring the MSTP Port MSTI Parameters
To view and configure MSTI port parameters:
1 Select Ethernet > Protocols > MSTP > Port > MSTI . The MSTP Port MSTI page opens.
Figure 274 MSTP Port MSTI Page