Chapter 6 Basic Setting
VES-1616F-3x Series User’s Guide
75
6.8 VDSL Parameters
The following sections describe the VDSL parameters you configure in the following screens:
• VDSL Alarm Profile Setup (see
• VDSL PSD Profile Setup (see
6.8.1 Frequency Band Plan
Each VDSL mode operates in a different frequency band allocation, resulting in different
upstream and downstream speeds. Your VES switch automatically changes the band plan
based on the loop condition and loop length.
All of the band plans include an optional band. Use the optional band for upstream
transmission which is to be negotiated during line initiation.
6.8.2 Configured Versus Actual Rate
You configure the maximum rate of an individual VDSL port by modifying its profile (see the
VDSL Profile Setup
screen) or assigning the port to a different profile (see the
Port Setup
screen). However, the actual rate varies depending on factor such as transmission range and
interference.
Flow Control
A concentration of traffic on a port decreases port bandwidth and overflows buffer
memory causing packet discards and frame losses.
Flow Control
is used to regulate
transmission of signals to match the bandwidth of the receiving port.
The switch uses IEEE802.3x flow control in full duplex mode and back pressure flow
control in half duplex mode.
IEEE802.3x flow control is used in full duplex mode to send a pause signal to the
sending port, causing it to temporarily stop sending signals when the receiving port
memory buffers fill.
Back Pressure flow control is typically used in half duplex mode to send a "collision"
signal to the sending port (mimicking a state of packet collision) causing the sending
port to temporarily stop sending signals and resend later. Select
Flow Control
to
enable it.
802.1P Priority This priority value is added to incoming frames without a (802.1p) priority queue tag.
See
Priority Queue Assignment
in
for more information.
BPDU Control
Configure the way to treat BPDUs received on this port. You must activate bridging
control protocol transparency in the
Switch Setup
screen first.
Select
Peer
to process any BPDU (Bridge Protocol Data Units) received on this port.
Select
Tunnel
to forward BPDUs received on this port.
Select
Discard
to drop any BPDU received on this port.
Select
Network
to process a BPDU with no VLAN tag and forward a tagged BPDU.
Apply
Click
Apply
to save the settings.
Cancel
Click
Cancel
to reset the fields to your previous configuration.
Table 13
Port Setup (continued)
LABEL
DESCRIPTION
Summary of Contents for VDSL SWITCH VES-1616F-3X
Page 1: ...www zyxel com VES 1616F 3x Series VDSL Switch User s Guide Version 3 60 5 2007 Edition 2 ...
Page 2: ......
Page 7: ...Safety Warnings VES 1616F 3x Series User s Guide 7 ...
Page 8: ...Safety Warnings VES 1616F 3x Series User s Guide 8 ...
Page 28: ...List of Tables VES 1616F 3x Series User s Guide 28 ...
Page 30: ...30 ...
Page 34: ...Chapter 1 Getting to Know Your Switch VES 1616F 3x Series User s Guide 34 ...
Page 42: ...Chapter 3 Hardware Overview VES 1616F 3x Series User s Guide 42 ...
Page 44: ...44 ...
Page 62: ...Chapter 5 System Status and Port Statistics VES 1616F 3x Series User s Guide 62 ...
Page 84: ...Chapter 6 Basic Setting VES 1616F 3x Series User s Guide 84 ...
Page 86: ...86 ...
Page 106: ...Chapter 10 Spanning Tree Protocol VES 1616F 3x Series User s Guide 106 ...
Page 120: ...Chapter 15 Port Authentication VES 1616F 3x Series User s Guide 120 ...
Page 126: ...Chapter 17 Queuing Method VES 1616F 3x Series User s Guide 126 ...
Page 131: ...Chapter 18 Classifier VES 1616F 3x Series User s Guide 131 Figure 51 Classifier Example ...
Page 132: ...Chapter 18 Classifier VES 1616F 3x Series User s Guide 132 ...
Page 138: ...Chapter 19 Policy VES 1616F 3x Series User s Guide 138 Figure 53 Policy Example ...
Page 144: ...Chapter 20 VLAN Stacking VES 1616F 3x Series User s Guide 144 ...
Page 156: ...Chapter 21 Multicast VES 1616F 3x Series User s Guide 156 ...
Page 160: ...Chapter 22 Differentiated Services VES 1616F 3x Series User s Guide 160 ...
Page 161: ...161 PART IV Routing Protocol Static Route 163 DHCP Relay 165 ...
Page 162: ...162 ...
Page 168: ...168 ...
Page 178: ...Chapter 25 Maintenance VES 1616F 3x Series User s Guide 178 ...
Page 192: ...Chapter 27 Diagnostic VES 1616F 3x Series User s Guide 192 ...
Page 196: ...Chapter 28 Syslog VES 1616F 3x Series User s Guide 196 ...
Page 202: ...Chapter 29 Cluster Management VES 1616F 3x Series User s Guide 202 ...
Page 208: ...208 ...
Page 242: ...Chapter 32 Introducing the Commands VES 1616F 3x Series User s Guide 242 ...
Page 266: ...Chapter 34 IEEE 802 1Q Tagged VLAN Commands VES 1616F 3x Series User s Guide 266 ...
Page 274: ...Chapter 35 Troubleshooting VES 1616F 3x Series User s Guide 274 ...
Page 282: ...Chapter 36 Product Specifications VES 1616F 3x Series User s Guide 282 ...
Page 284: ...284 ...
Page 298: ...Appendix B Legal Information VES 1616F 3x Series User s Guide 298 ...