ZyXEL Communications VES-1000 - Manual (Page 76)

VES-1000 Series Ethernet Switch
9-6 System Maintenance 1
Table 9-B Port Statistics
FIELD DESCRIPTION
Ratio is the ratio of the amplitude of the desired signal to the amplitude of noise signals at
a given point in time.
MSE Minimum Square Error. The minimum mean-square error (also known as MMSE)
performance measure is a popular metric for optimal signal processing.
RS_ERR This is the Reed-Solomon error count. Reed-Solomon codes are block-based error
correcting codes and are used to correct errors in many systems including
PSD This is the Power Spectrum Density.
DISC This is a VDSL Disconnect counter.
9.2.2 Spanning Tree Protocol Status
Verify STP status in this menu.
Step 4. Enter 24 from the main menu to go to Menu 24 – System Maintenance.
Step 5. Enter 1 to open Menu 24.1 – System Status.
Step 6. Enter 2 to open Menu 24.1.2 — System Maintenance — Spanning Tree Protocol Status.
Figure 9-5 Menu 24.1.2 - Spanning Tree Protocol Status
Table 9-C Menu 24.1.2 - Spanning Tree Protocol Status
FIELD DESCRIPTION
Spanning Tree Protocol This field shows if the switch is enabled to participate in an STP-compliant network.
Root Bridge The following six fields relate to the root bridge.
Bridge ID This is a unique identifier for this bridge, consisting of bridge priority plus MAC address.
Cost to Bridge This is the cost for a packet to travel to the root in the current Spanning Tree
configuration. The slower the media, the higher the cost. This is 0 if your bridge is the
root device.
Menu 24.1.2 - Spanning Tree Protocol Status
Spanning Tree Protocol= Running
Root Bridge: Our Bridge:
Bridge ID: 8000-00a0c5451da7 Bridge ID: 8000-00a0c5451da7
Cost to Bridge: 0 Hello Time(Time (sec): 2
PortID: 0X0000 Max Age(Age (sec): 20
Hello Time(Time (sec): 2 Forward Delay (sec): 15
Max Age(Age (sec): 20
Forward Delay(Delay (sec): 15
Topology:
Change Times: 0
Time Since Last Change: 0:00:16
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