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| Title | Size | Download |
|---|---|---|
| 06-ATM interface commands | 225.15 KB |
ATM interface commands
Commands in this chapter are supported only when the device has related interfaces. For the interfaces that the device has, see the installation guide and interface module manuals.
Common ATM interface commands
bandwidth
Use bandwidth to configure the expected bandwidth for an interface.
Use undo bandwidth to restore the default.
Syntax
bandwidth bandwidth-value
undo bandwidth
Default
The expected bandwidth (in kbps) is the interface baud rate divided by 1000.
Views
ATM interface view (including four interface types: OC-3c/STM-1, ADSL 2+, SHDSL_4WIRE, SHDSL_8WIRE_BIS)
ATM subinterface view
EFM interface view (including one interface type: SHDSL_8WIRE_BIS)
EFM subinterface view
Predefined user roles
network-admin
Parameters
bandwidth-value: Specifies the expected bandwidth in the range of 1 to 400000000 kbps.
Usage guidelines
The expected bandwidth is an informational parameter used only by higher-layer protocols for calculation. You cannot adjust the actual bandwidth of an interface by using this command.
Examples
# Set the expected bandwidth of interface ATM 3/2/1 to 50 kbps.
<Sysname> system-view
[Sysname] interface atm 3/2/1
[Sysname-ATM3/2/1] bandwidth 50
default
Use default to restore the default settings for an interface.
Syntax
default
Views
ATM interface view (including four interface types: OC-3c/STM-1, ADSL 2+, SHDSL_4WIRE, SHDSL_8WIRE_BIS)
ATM subinterface view
EFM interface view (including one interface type: SHDSL_8WIRE_BIS)
EFM subinterface view
Predefined user roles
network-admin
Usage guidelines
|
|
CAUTION: The default command might interrupt ongoing network services. Make sure you are fully aware of the impact of this command when you use it on a live network. |
This command might fail to restore the default settings for some commands for reasons such as command dependencies and system restrictions. You can use the display this command in interface view to check for these commands, and use their undo forms or follow the command reference to restore their respective default settings. If your restoration attempt still fails, follow the error message instructions to resolve the problem.
Examples
# Restore the default settings of interface ATM 3/2/1.
<Sysname> system-view
[Sysname] interface atm 3/2/1
[Sysname-ATM3/2/1] default
description
Use description to configure the description of an interface.
Use undo description to restore the default.
Syntax
description text
undo description
Default
The description of an interface is interface name Interface, for example, ATM 3/2/1 Interface.
Views
ATM interface view (including four interface types: OC-3c/STM-1, ADSL 2+, SHDSL_4WIRE, SHDSL_8WIRE_BIS)
ATM subinterface view
EFM interface view (including one interface type: SHDSL_8WIRE_BIS)
EFM subinterface view
Predefined user roles
network-admin
Parameters
text: Specifies the description, a case-sensitive string of 1 to 255 characters.
Examples
# Configure the description of interface ATM 3/2/1 as atmswitch-interface.
<Sysname> system-view
[Sysname-ATM3/2/1] description atmswitch-interface
display counters
Use display counters to display ATM interface traffic statistics.
Syntax
display counters { inbound | outbound } interface [ atm [ interface-number ] ]
Views
Any view
Predefined user roles
network-admin
network-operator
Parameters
inbound: Displays inbound traffic statistics.
outbound: Displays outbound traffic statistics.
atm [ interface-number ]: Specifies an ATM interface by its number. If you do not specify the atm keyword, this command displays traffic statistics for all interfaces that have traffic counters. If you specify the atm keyword but do not specify the interface-number argument, this command displays traffic statistics for all ATM interfaces.
Examples
# Display inbound traffic statistics for interface ATM 3/2/1.
<Sysname> display counters inbound interface atm 3/2/1
Interface Total (pkts) Broadcast (pkts) Multicast (pkts) Err (pkts)
ATM3/2/1 100 0 100 0
Overflow: More than 14 digits (7 digits for column "Err").
--: Not supported.
Table 1 Command output
|
Field |
Description |
|
Interface |
Abbreviated interface name. |
|
Total (pkts) |
Total number of packets that the interface receives or sends. |
|
Broadcast (pkts) |
Total number of broadcast packets that the interface receives or sends. |
|
Multicast (pkts) |
Total number of multicast packets that the interface receives or sends. |
|
Err (pkts) |
Total number of error packets that the interface receives or sends. |
|
Overflow: More than 14 digits (7 digits for column "Err") |
The field displays Overflow when one of the following conditions exist: · The data length of an Err field value is greater than 7 decimal digits. · The data length of a non-Err field value is greater than 14 decimal digits. |
|
--: Not supported. |
The statistical item is not supported. |
Related commands
reset counters interface
display counters rate
Use display counters rate to display traffic rate statistics for interfaces in up state over the most recent statistics polling interval.
Syntax
display counters rate { inbound | outbound } interface [ atm [ interface-number ] ]
Views
Any view
Predefined user roles
network-admin
network-operator
Parameters
inbound: Displays inbound traffic rate statistics.
outbound: Displays outbound traffic rate statistics.
atm [ interface-number ]: Specifies an ATM interface by its number. If you do not specify the atm keyword, this command displays traffic rate statistics for all up interfaces in the most recent statistics polling interval. If you specify the atm keyword but do not specify the interface-number argument, this command displays traffic rate statistics for all up ATM interfaces in the most recent statistics polling interval.
Usage guidelines
You can use the flow-interval command to set the statistics polling interval.
Examples
# Display the inbound traffic rate statistics for interface ATM 3/2/1.
<Sysname> display counters rate inbound interface atm 3/2/1
Usage: Bandwidth utilization in percentage
Interface Usage (%) Total (pps) Broadcast (pps) Multicast (pps)
ATM3/2/1 3 0 -- --
Overflow: More than 14 digits.
--: Not supported.
Table 2 Command output
|
Field |
Description |
|
Interface |
Abbreviated interface name. |
|
Usage (%) |
Interface bandwidth usage (in ratio) for the most recent statistics polling interval. |
|
Total (pps) |
Average receiving or sending rate (in pps) for all packets for the most recent statistics polling interval. |
|
Broadcast (pps) |
Average receiving or sending rate (in pps) for broadcast packets for the most recent statistics polling interval. |
|
Multicast (pps) |
Average receiving or sending rate (in pps) for multicast packets for the most recent statistics polling interval. |
|
Overflow: More than 14 digits. |
Indicates that the data length of a statistical item is greater than 14 decimal digits. |
|
--: Not supported. |
The statistical item is not supported. |
Related commands
reset counters interface
display interface atm
Use display interface atm to display information about ATM interfaces.
Syntax
display interface [ atm [ interface-number ] ] [ brief [ description | down ] ]
Views
Any view
Predefined user roles
network-admin
network-operator
Parameters
atm [ interface-number ]: Specifies an ATM interface by its number. If you do not specify the atm keyword, this command displays information about all interfaces except VA interfaces on the device. If you specify the atm keyword but do not specify the interface-number argument, this command displays information about all ATM interfaces. For more information about VA interfaces, see PPPoE configuration in Layer 2—WAN Access Configuration Guide.
brief: Displays brief interface information. If you do not specify this keyword, the command displays detailed interface information.
description: Displays complete interface descriptions. If you do not specify this keyword, the command displays only the first 27 characters of interface descriptions.
down: Displays information about interfaces in physically DOWN state and the causes. If you do not specify this keyword, the command displays information about interfaces in all states.
Examples
# Display detailed information about interface ATM 3/2/1.
<Sysname> display interface atm 3/2/1
ATM3/2/1
Current state: DOWN
Line protocol state: DOWN
Description: ATM3/2/1 Interface
Bandwidth: 20000kbps
Maximum transmission unit: 1500
Internet protocol processing: Disabled
AAL enabled: AAL5
Current VCs: 0 (0 on main interface)
ATM over E1, Scramble: enabled, Frame-format: crc4-adm
Code: hdb3, Clock: slave, Cable length: long
Loopback: cell
Cable type: 75 ohm non-balanced
Line Alarm: LOS LOF
Line Error: 0 FERR, 0 LCV, 0 CERR, 0 FEBE
Last link flapping: 4 days 6 hours 39 minutes
Last clearing of counters: Never
Last 300 seconds input rate: 0.00 bytes/sec, 0 bits/sec, 0.00 packets/sec
Last 300 seconds output rate: 0.00 bytes/sec, 0 bits/sec, 0.00 packets/sec
Input:
0 packets, 0 bytes, 0 buffers
0 errors, 0 crcs, 0 lens, 0 giants
0 pads, 0 aborts, 0 timeouts
0 overflows, 0 overruns, 0 no buffer
Output:
0 packets, 0 bytes, 0 buffers
0 errors, 0 overflows, 0 underruns
# Display brief information about interface ATM 3/2/1.
<Sysname> display interface atm 3/2/1 brief
Brief information on interfaces in route mode:
Link: ADM - administratively down; Stby - standby
Protocol: (s) - spoofing
Interface Link Protocol Primary IP Description
ATM3/2/1 UP UP(s) --
# Display brief information, including the causes, for all ATM interfaces in physically DOWN state.
<Sysname> display interface atm brief down
Brief information on interfaces in route mode:
Link: ADM - administratively down; Stby - standby
Interface Link Cause
ATM3/2/1 DOWN Not connected
Table 3 Command output
|
Field |
Description |
|
Current state |
Physical link state of the interface: · Administratively DOWN—The interface has been shut down by using the shutdown command. · DOWN—The interface is administratively up, but its physical state is down (possibly because no physical link exists or the link has failed). · UP—The interface is both administratively and physically up. |
|
Line protocol state |
Data link layer state of the interface. The state is determined through automatic parameter negotiation at the data link layer. · UP—The data link layer protocol is up. · DOWN—The data link layer protocol is down. |
|
Description |
Description of the interface. |
|
Bandwidth |
Expected bandwidth of the interface. |
|
Maximum transmission unit |
MTU of the interface. |
|
Internet protocol processing: Disabled |
The interface is not assigned an IP address and cannot process IP packets. |
|
Internet address: ip-address/mask-length (Type) |
IP address of the interface and type of the address in parentheses. Possible IP address types include: · Primary—Manually configured primary IP address. · Sub—Manually configured secondary IP address. If the interface has both primary and secondary IP addresses, the primary IP address is displayed. If the interface has only secondary IP addresses, the lowest secondary IP address is displayed. · DHCP-Allocated—DHCP allocated IP address. For more information, see DHCP client configuration in Layer 3—IP Services Configuration Guide. · BOOTP-Allocated—BOOTP allocated IP address. For more information, see BOOTP client configuration in Layer 3—IP Services Configuration Guide. · PPP-Negotiated—IP address assigned by a PPP server during PPP negotiation. For more information, see PPP configuration in Layer 2—WAN Access Configuration Guide. · Unnumbered—IP address borrowed from another interface. · Cellular-Allocated—IP address allocated through the modem-manufacturer's proprietary protocol. For more information, see 3G/4G modem management in Layer 2—WAN Access Configuration Guide. · MAD—IP address assigned to an IRF member device for MAD on the interface. For more information, see IRF configuration in Virtual Technologies Configuration Guide. · MTunnel—IP address of the multicast tunnel interface (MTI), which is the same as the IP address of the MVPN source interface. For more information, see multicast VPN configuration in IP Multicast Configuration Guide. |
|
AAL enabled |
AAL type enabled on the interface. The ATM interface supports only ATM Adaptation Layer 5 (AAL5). |
|
Current VCs: 0 (0 on main interface) |
Number of virtual circuits configured on the interface. Contents in the parentheses indicate the number of virtual circuits configured on the primary interface. |
|
ATM over E1 |
Type of the interface. |
|
Scramble |
Scrambling state of the interface. |
|
Frame-format |
Frame format of the interface: · SDH STM-1. · SONET OC-3. · CRC4 ADM. · No-CRC4 ADM. · ESF ADM. · SF ADM. · G.751ADM. · G.751 PLCP. · G.823 ADM. · C-bit ADM. · C-bit PLCP. · M23 ADM. · M23 PLCP. |
|
Code |
Line coding format of the interface: AMI, HDB3 or B8ZS. |
|
Clock |
Clock mode of the interface: master or slave. |
|
Cable length |
Cable mode of the interface: · long—Long-haul mode, with cable length in the range of 151 m (495.41 ft) to 500 m (1640.42 ft). · short—Short-haul mode, with cable length in the range of 0 to 150 m (492.13 ft). |
|
Loopback |
Loopback mode of the interface: · cell—Internal cell loopback. · local—Internal loopback. · payload—External payload loopback. · remote—External line loopback. |
|
Line Error |
Line error of the interface: · FERR—Framing bit error. · LCV—Line code violation. · CERR—CRC errors. · FEBE—Far-end block error. |
|
Last link flapping |
The amount of time that has elapsed since the most recent physical state change of the interface. This field displays Never if the interface has been physically down since device startup. |
|
Last clearing of counters |
Time when the reset counters interface command was last used to clear the interface statistics. This field displays Never if the reset counters interface command has never been used on the interface since device startup. |
|
Current system time |
Current system time in the YYYY-MM-DD HH:MM:SS format. If the time zone is configured, this field is in the YYYY-MM-DD HH:MM:SS UTC±HH:MM:SS format. |
|
Last 300 seconds input rate: 0.00 bytes/sec, 0 bits/sec, 0.00 packets/sec |
Average input rates (in Bps, bps, and pps) for the last 300 seconds. |
|
Last 300 seconds output rate: 0.00 bytes/sec, 0 bits/sec, 0.00 packets/sec |
Average output rates (in Bps, bps, and pps) for the last 300 seconds. |
|
Input: 0 packets, 0 bytes, 0 buffers 0 errors, 0 crcs, 0 lens, 0 giants 0 pads, 0 aborts, 0 timeouts 0 overflows, 0 overruns, 0 no buffer |
Packet input parameters: · packets—Number of total packets received. · bytes—Number of total bytes received. · buffers—Number of buffers used to receive packets. · errors—Number of error packets detected in the physical layer. · crcs—Number of CRC errors. · lens—Number of packets received in invalid lengths. · giants—Number of packets received in lengths exceeding the set value. · pads—Number of errors occurred in the packet padding process. · aborts—Number of anomalous errors. · timeouts—Number of timeout packets. · overflows—Number of chip FIFO overflow errors occurred in the receiving process. · overruns—Number of packets unprocessed due to high receiving rates exceeding the forwarding rate. · no buffer—Number of errors caused by insufficient system resources. |
|
Output: 0 packets, 0 bytes, 0 buffers 0 errors, 0 overflows, 0 underruns |
Packet output parameters: · packets—Number of total packets transmitted. · bytes—Number of total bytes transmitted. · buffers—Number of buffers used to transmit packets. · errors—Number of error packets detected in the physical layer. · overflows—Number of chip FIFO overflow errors occurred in the transmitting process. · underruns—Number of packets untransmitted because the interface reading rate was lower than the forwarding rate. |
|
Brief information on interfaces in route mode |
Brief information about Layer 3 interfaces. |
|
Interface |
Abbreviation of the interface name. |
|
Link |
Physical link state of the interface: · UP—The interface is physically up. · DOWN—The interface is physically down. · ADM—The interface has been shut down by using the shutdown command. To restore the physical state of the interface, use the undo shutdown command. · Stby—The interface is a backup interface in standby state. To see the primary interface, use the display interface-backup state command. |
|
Protocol |
Data link layer protocol state of the interface: · UP—The data link layer protocol of the interface is up. · DOWN—The data link layer protocol of the interface is down. · UP(s)—The data link layer protocol of the interface is up, but the link is an on-demand link or does not exist. The (s) attribute represents the spoofing flag. |
|
Primary IP |
Primary IP address of the interface. This field displays two hyphens (--) if the interface does not have an IP address. |
|
Description |
Description of the interface. |
|
Cause |
Cause for the physical link state of an interface to be DOWN: · Administratively—The interface has been manually shut down by using the shutdown command. To restore the physical state of the interface, use the undo shutdown command. · Not connected—No physical connection exists (possibly because the network cable is disconnected or faulty). |
interface atm
Use interface atm to create an ATM subinterface and enter its view, or enter the view of an existing ATM interface or ATM subinterface.
Use undo interface atm to remove an ATM subinterface.
Syntax
interface atm { interface-number | interface-number.subnumber [ p2mp | p2p ] }
undo interface atm interface-number.subnumber
Default
No ATM subinterfaces exist.
Views
System view
Predefined user roles
network-admin
Parameters
interface-number: Specifies an ATM interface by its number.
interface-number.subnumber: Specifies an ATM subinterface by its number. The interface-number argument represents the number of the ATM interface. The subnumber argument represents the number of the subinterface, in the range of 0 to 1023.
p2mp: Specifies a point-to-multipoint subinterface. A subinterface is P2MP type by default.
p2p: Specifies a point-to-point subinterface.
Examples
# Enter ATM 3/2/1 interface view.
<Sysname> system-view
[Sysname] interface atm 3/2/1
[Sysname-ATM3/2/1]
# Create ATM subinterface ATM 3/2/1.1 and enter its view.
<Sysname> system-view
[Sysname] interface atm3/2/1.1
[Sysname-ATM3/2/1.1]
mtu
Use mtu to set the MTU value for an interface.
Use undo mtu to restore the default.
Syntax
mtu size
undo mtu
Default
The MTU of an interface is 1500 bytes.
Views
ATM interface view (including four interface types: OC-3c/STM-1, ADSL 2+, SHDSL_4WIRE, SHDSL_8WIRE_BIS)
ATM subinterface view
EFM interface view (including one interface type: SHDSL_8WIRE_BIS)
EFM subinterface view
Predefined user roles
network-admin
Parameters
size: Specifies the maximum transmission unit (MTU) in bytes. The value range for this argument is 128 to 2000.
Usage guidelines
The MTU setting affects IP packet reassembly and fragmentation on the interface.
Examples
# Set the MTU of interface ATM 3/2/1 to 200 bytes.
<Sysname> system-view
[Sysname] interface atm 3/2/1
[Sysname-ATM3/2/1] mtu 200
reset counters interface
Use reset counters interface to clear the statistics for an ATM interface.
Syntax
reset counters interface [ atm [ interface-number ] ]
Views
User view
Predefined user roles
network-admin
Parameters
atm [ interface-number ]: Specifies an ATM interface by its number. If you do not specify the atm keyword, this command clears statistics for all interfaces except VA interfaces. If you specify the atm keyword but do not specify the interface-number argument, this command clears statistics for all ATM interfaces. For more information about VA interfaces, see PPPoE configuration in Layer 2—WAN Access Configuration Guide.
Usage guidelines
Use this command to clear history statistics before you collect traffic statistics for a time period.
Examples
# Clear statistics for ATM 3/2/1.
<Sysname> reset counters interface atm 3/2/1
shutdown
Use shutdown to shut down an ATM interface.
Use undo shutdown to bring up an ATM interface.
Syntax
shutdown
undo shutdown
Default
An ATM interface is up.
Views
ATM interface view (including four interface types: OC-3c/STM-1, ADSL 2+, SHDSL_4WIRE, SHDSL_8WIRE_BIS)
ATM subinterface view
EFM interface view (including one interface type: SHDSL_8WIRE_BIS)
EFM subinterface view
Predefined user roles
network-admin
Examples
# Shut down interface ATM 3/2/1.
<Sysname> system-view
[Sysname] interface atm 3/2/1
[Sysname-ATM3/2/1] shutdown
ATM OC-3c/STM-1 interface commands
clock
Use clock to set the clock mode for an ATM interface.
Use undo clock to restore the default.
Syntax
clock { master | slave }
undo clock
Default
The clock mode for an ATM interface is slave.
Views
ATM OC-3c/STM-1 interface view
Predefined user roles
network-admin
Parameters
master: Specifies the internal clock as the clock source.
slave: Specifies the line clock as the clock source.
Usage guidelines
The clock of the SONET/SDH network is more precise than the internal clock of ATM interfaces. When an ATM interface is connected to a SONET/SDH device, set the clock mode of the ATM interface to slave.
When the ATM interfaces on two devices are connected directly through a fiber-optic cable, set the clock mode to master at one end and to slave at the other end.
Examples
# Set the clock mode of interface ATM 3/2/1 to master.
<Sysname> system-view
[Sysname] interface atm 3/2/1
[Sysname-ATM3/2/1] clock master
flag
Use flag to set a SONET/SDH overhead byte.
Use undo flag to restore the default of the specified SONET/SDH overhead byte.
Syntax
flag c2 flag-value
undo flag c2
flag { j0 | j1 } { sdh | sonet } flag-value
undo flag { j0 | j1 } { sdh | sonet }
Default
The value of c2 is 13 (hexadecimal).
The system uses the SDH frame format. The default values for j0 and j1 vary are null.
Views
ATM OC-3c/STM-1 interface view
Predefined user roles
network-admin
Parameters
c2 flag-value: Specifies the C2 byte. The C2 byte is a higher-order path overhead byte used to indicate the multiplex structure of virtual container (VC) frames and property of payload. It is a hexadecimal number in the range of 0 to ff.
j0 flag-value: Specifies the J0 byte. The J0 byte is a section overhead byte used to test continuity of the connection between two interfaces at the section level. If the sdh keyword is configured, the flag-value argument is a string of 1 to 15 hexadecimal digits. If the sonet keyword is configured, the argument is a hexadecimal number in the range of 0 to ff.
j1 flag-value: Specifies the J1 byte. The J1 byte is a higher-order path overhead byte used to test continuity of the connection between two interfaces at the path level. If the sdh keyword is configured, the flag-value argument is a string of 1 to 15 hexadecimal digits. If the sonet keyword is configured, the argument is a string of 1 to 62 characters.
sdh: Sets frame format to Synchronous Digital Hierarchy (SDH).
sonet: Sets frame format to Synchronous Optical Network (SONET).
Usage guidelines
When the C2 byte of one end is set to 1, the C2 byte of the other end can be set to any character in hexadecimal notation. If the C2 byte of either ends of a link is not set to 1, the C2 byte must be the same at both ends.
The J1 settings on the sending and receiving ends must be the same.
The J0 byte can be any character in the network of the same carrier. On networks of two carriers, the sending and receiving devices at network borders must use the same J0 byte.
Examples
# Set the SDH overhead byte J0 of ATM 3/2/1 to ff (hexadecimal).
<Sysname> system-view
[Sysname-ATM3/2/1] flag j0 sdh ff
frame-format
Use frame-format to set the frame format of an ATM interface.
Use undo frame-format to restore the default.
Syntax
frame-format { sdh | sonet }
undo frame-format
Default
The frame format of an ATM interface is SDH.
Views
ATM OC-3c/STM-1 interface view
Predefined user roles
network-admin
Parameters
sdh: Sets the frame format to SDH.
sonnet: Sets the frame format to SONET.
Usage guidelines
The overhead bytes configured with the flag command must match the frame format.
Examples
# Set the frame format on interface ATM 3/2/1 to SDH.
<Sysname> system-view
[Sysname] interface atm 3/2/1
[Sysname-ATM3/2/1] frame-format sdh
Related commands
scramble
Use scramble to enable payload scrambling on an ATM interface.
Use undo scramble to disable payload scrambling on an ATM interface.
Syntax
scramble
undo scramble
Default
Payload scrambling is enabled on an ATM interface.
Views
ATM OC-3c/STM-1 interface view
Predefined user roles
network-admin
Usage guidelines
Payload scrambling enables an interface to scramble outgoing data and descramble incoming data. By preventing the presence of long strings of all 1s or all 0s, payload scrambling enables the receiving end to extract the line clock signal correctly.
If payload scrambling is disabled, the interface does not scramble outgoing data or descramble incoming data.
The payload scrambling setting must be the same at both ends of a link.
After payload scrambling is enabled or disabled on an interface, the C2 byte on the interface does not change automatically. Use the flag c2 command to set the same C2 byte on the interface as its peer.
The scramble command does not affect cell headers.
Examples
# Enable payload scrambling on interface ATM 3/2/1.
<Sysname> system-view
[Sysname] interface atm 3/2/1
[Sysname-ATM3/2/1] scramble
ADSL interface commands
This section describes commands for configuring ATM ADSL 2+ interfaces.
activate
Use activate to activate an ADSL interface.
Use undo activate to deactivate an ADSL interface.
Syntax
activate
undo activate
Default
An ADSL interface is active.
Views
ATM ADSL 2+ interface view
Predefined user roles
network-admin
Usage guidelines
An ADSL interface on a customer premises equipment (CPE) must be activated before it can transmit services.
Activation refers to the handshake training and information exchange process between the central office (CO) equipment and the CPE. During this process, the two parties examine the line distance and conditions against the line configuration template of the CO equipment. The template defines the ADSL criteria, channel mode, uplink and downlink speeds, and noise tolerance. The parties attempt to reach an agreement. If the activation succeeds, a connection is set up between the two parties for service transmission.
During the parameter negotiation process for line activation, typically the CO equipment provides parameters for the CPE. A line activation process starts from line negotiation until the line comes up. Typically the activation process lasts for 30 seconds.
Deactivation tears down the connection between the two parties. To transmit services, you must re-activate the interface.
Because an ADSL interface is always on, it transits to the active state automatically at startup and remains active as long as the link is in good condition. The device regularly tests the performance of the line. If the device finds that the line performance is deteriorating, it automatically deactivates, retrains, and then reactivates the line.
This command enables you to manually activate or deactivate an ADSL interface. It is intended for testing and troubleshooting.
Examples
# Activate ADSL interface ATM 3/2/1.
<Sysname> system-view
[Sysname] interface atm3/2/1
[Sysname-ATM3/2/1] activate
adsl standard
Use adsl standard to set the standard for an ADSL interface.
Use undo adsl standard to restore the default.
Syntax
adsl standard { auto | g9923 | g9925 | gdmt | glite | t1413 }
undo adsl standard
Default
The standard for an ADSL interface is auto-negotiation.
Views
ATM ADSL 2+ interface view
Predefined user roles
network-admin
Parameters
auto: Specifies the auto-negotiation mode. The ADSL interface automatically negotiates the standard with the remote end.
g9923: Specifies the ADSL2 (G992.3) standard.
g9925: Specifies the ADSL2+ (G992.5) standard.
gdmt: Specifies the G.DMT (G992.1) standard.
glite: Specifies the G.Lite (G992.2) standard.
t1413: Specifies the T1.413 standard.
Usage guidelines
The ADSL-I module does not support G.Lite (G992.2) standard and T1.413 standard.
The ADSL interfaces on the two ends must be configured with the same standard.
The standard that you specify takes effect when you re-activate the interface by either the shutdown and undo shutdown commands or the activate and undo activate commands.
Examples
# Apply the standard T1.413 on interface ATM 3/2/1.
<Sysname> system-view
[Sysname] interface atm 3/2/1
[Sysname-ATM3/2/1] adsl standard t1413
adsl tx-attenuation
Use adsl tx-attenuation to set a transmission power attenuation for an ADSL interface.
Use undo adsl tx-attenuation to restore the default.
Syntax
adsl tx-attenuation attenuation
undo adsl tx-attenuation
Default
The transmission power attenuation is 0 (no attenuation) for an ADSL interface.
Views
ATM ADSL 2+ interface view
Predefined user roles
network-admin
Parameters
attenuation: Specifies the transmission power attenuation in the range of 0 to 12 dB.
Usage guidelines
A higher attenuation value means a lower transmission power. A high transmission power might affect the signals of other ADSL interfaces.
Examples
# Set the transmission power attenuation to 10 for ATM ADSL interface ATM 3/2/1.
<Sysname> system-view
[Sysname] interface atm 3/2/1
[Sysname-ATM3/2/1] adsl tx-attenuation 10
display dsl configuration
Use display dsl configuration to display the configurations for an ADSL interface.
Syntax
display dsl configuration interface atm interface-number
Views
Any view
Predefined user roles
network-admin
network-operator
Parameters
interface atm interface-number: Specifies an ADSL interface by its number.
Examples
# Display the configurations for ADSL interface ATM 3/2/1.
<Sysname> display dsl configuration interface atm 3/2/1
Line Params Set by User:
Standard: T1.413
Annex: A
Coding Gain(dB): Auto
Tx Pow Attn(dB): 0
Bit-Swap: disable
Actual Config Near End Far End
Standard: T1.413 T1.413
Trellis Coding: Enable Enable
Vendor ID: 0x0039 0x0004
AS0 (DS) LS0(US)
Rate(Bytes): 238 26
Rate(kbps): 7616 832
Latency: Intlv Intlv
Table 4 Command output
|
Field |
Description |
|
The following configuration information is always displayed: |
|
|
Standard |
Available standard: · Auto-negotiation (default). · ADSL2 (G992.3). · ADSL2+ (G992.5). · G.DMT (G992.1). · G.Lite (G992.2). · T1.413. To set the available standard for an ADSL interface, use the adsl standard command. |
|
Annex |
Annex standard used by the line: · A—Annex A, indicating ADSL over POTS. · B—Annex B, indicating ADSL over ISDN. The value of this field is predefined and cannot be modified. |
|
Coding Gain(dB) |
Coding gain in dB. This field displays Auto if the interface automatically negotiates the coding gain. The value of this field is predefined and cannot be modified. |
|
Tx Pow Attn(dB) |
Transmission power attenuation in dB. The value of this field is predefined and cannot be modified. |
|
Bit-Swap |
Bit switch function state: enable or disable. The value of this field is predefined and cannot be modified. |
|
The following information is displayed when the line is up: |
|
|
Standard |
Standard that takes effect on the interface: · Auto-negotiation (default). · ADSL2 (G992.3). · ADSL2+ (G992.5). · G.DMT (G992.1). · G.Lite (G992.2). · T1.413. |
|
Trellis Coding |
Trellis coding state: Enable or Disable. |
|
Vendor ID |
Vendor ID of the chip. |
|
Rate(Bytes) |
Negotiation rate in bytes: · AS0 (DS)—Downlink rate. · LS0 (US)—Uplink rate. |
|
Rate(kbps) |
Negotiation rate in kbps: · AS0 (DS)—Downlink rate. · LS0 (US)—Uplink rate. |
|
Latency |
Data coding mode: · Fast—Fast mode, with short line delay but low line quality. · Interleave—Interleave mode, with high error correction capacity but long line delay. |
display dsl status
Use display dsl status to display the status information for an ADSL interface.
Syntax
display dsl status interface atm interface-number
Views
Any view
Predefined user roles
network-admin
network-operator
Parameters
interface atm interface-number: Specifies an ADSL interface by its number.
Examples
# Display the status information for ADSL interface ATM 3/2/1.
<Sysname> display dsl status interface atm 3/2/1
Line Status: Loss Of Signal
Training Status: Idle
Active Params Near End Far End
Standard: G.dmt G.dmt
SNR (dB): 0.0 0.0
Attn(dB): 0.0 0.0
Pwr(dBm): 0.0 0.0
Current Rate(kbps): 0 0
Latency: Intl Intl
Table 5 Command output
|
Field |
Description |
|
Line Status |
ADSL line status: · No Defect. · Loss Of Frame. · Loss Of Signal. · Loss Of Power. · Loss Of Signal Quality. · Unknown. |
|
Training Status |
Status during the training with the digital subscriber line access multiplexer (DSLAM) equipment: · Idle. · G.994 Training. · G.992 Started. · G.922 Channel Analysis. · G.992 Message Exchange. · Showtime (normal data exchange). · Unknown. |
|
The following information is displayed when the line is up: |
|
|
Active Params |
Near End indicates the downlink direction (in which packets are received). Far End indicates the uplink direction (in which packets are transmitted). Line activation parameters: · Standard—Standard for the connection between the ADSL interface and the DSLAM equipment. · SNR—Current SNR. A high SNR value indicates a good line condition. · Attn—Current attenuation. A large attenuation value indicates a poor line condition. · Pwr—Current transmission power in dbm. · Current Rate—ADSL line rate in kbps. · Latency—Data coding mode, including Intl and Fast. |
display dsl version
Use display dsl version to display the version information and available capabilities for an ADSL interface.
Syntax
display dsl version interface atm interface-number
Views
Any view
Predefined user roles
network-admin
network-operator
Parameters
interface atm interface-number: Specifies an ADSL interface by its number.
Examples
# Display the version information and available capabilities for ADSL interface ATM 3/2/1.
<Sysname> display dsl version interface atm 3/2/1
ADSL board chipset and version info:
DSL Line Type: ADSL Over Pots
Chipset Vendor: BDCM
FW Release: A2pB017l.d15h
DSP Version: 17.1200
AFE Version: 1.0
Bootrom Version: 1.1
Hardware Version: 4.0
Driver Version: 1.3
CPLD Version: 1.0
ADSL Capability:
ANNEX Supported:
ANNEX A
Standard Supported:
ANSI T1.413 Issue 2
ITU G992.1(G.dmt)
ITU G992.2(G.lite)
ITU G992.3(Adsl2)
ITU G992.3(ReAdsl2)
ITU G992.5(Adsl2p)
Table 6 Command output
|
Field |
Description |
|
ADSL board chipset and version info |
Version and vendor information about the ADSL card chipset. |
|
DSL Line Type |
DSL line type: · ADSL over ISDN—ADSL signals are transmitted at the high frequency ranges. ISDN signals are transmitted at the low frequency ranges. · ADSL Over Pots—ADSL over telephone line. |
|
FW Release |
Identification and version information about firmware. |
|
ADSL Capability |
Standards and annex standards supported by the interface. |
G.SHDSL interface commands
his section describes commands for configuring the following G.SHDSL interfaces:
· ATM SHDSL_4WIRE—Four-wire G.SHDSL.
· ATM SHDSL_8WIRE_BIS—Eight-wire G.SHDSL.BIS.
activate
Use activate to activate a G.SHDSL interface.
Use undo activate to deactivate a G.SHDSL interface.
Syntax
activate
undo activate
Default
A G.SHDSL interface is active.
Views
ATM SHDSL_4WIRE interface view
ATM SHDSL_8WIRE_BIS interface view
Predefined user roles
network-admin
Usage guidelines
A G.SHDSL interface on a CPE must be activated before it can transmit services.
Activation refers to the handshake training and information exchange process between the CO equipment and the CPE. During this process, the two parties examine the line distance and conditions against the line configuration template of the CO equipment. The template defines the SHDSL criteria, channel mode, uplink and downlink speeds, and noise tolerance. The parties attempt to reach an agreement. If the activation succeeds, a connection is set up between the two parties for service transmission.
During the parameter negotiation process for line activation, the CO equipment provides most parameters for the CPE. A line activation process starts from line negotiation until the line comes up. Typically the activation process lasts for 30 seconds.
Deactivation tears down the connection between the two parties. To transmit services, you must re-activate the interface.
Because a G.SHDSL interface is always on, it transits to the active state automatically at startup and remains active as long as the link is in good condition. The device regularly tests the performance of the line. If the device finds that the line performance is deteriorating, it automatically deactivates, retrains, and then reactivates the line.
This command enables you to manually activate or deactivate a G.SHDSL interface. It is intended for test and troubleshooting uses.
Examples
# Activate G.SHDSL interface ATM 3/2/1.
<Sysname> system-view
[Sysname] interface atm 3/2/1
[Sysname-ATM3/2/1] activate
display dsl configuration
Use display dsl configuration to display the configurations for a G.SHDSL interface.
Syntax
display dsl configuration interface atm interface-number
Views
Any view
Predefined user roles
network-admin
network-operator
Parameters
interface atm interface-number: Specifies a G.SHDSL interface by its number.
Examples
# Display the configurations for G.SHDSL interface ATM 3/2/1.
<Sysname> display dsl configuration interface atm 3/2/1
Line parameter and mode configuration:
Mode: CPE
Standard: G.991.2
Annex: B
Wire type: 2
Line rate: Auto Adaptive
Current margin: 2
SNEXT margin: 0
PSD mode: Sym PSD
Actual handshake status:
00: 0002 0000 0000 0000 0000 0000 0000 0000 0000 0000
10: 0000 0008 0000 0000 0000 0000 0000 0000 0008 0000
20: 0000 0000 0002 0002 0004 0010
Local handshake status:
00: 0002 0001 0000 0000 0000 0000 0034 003f 003f 003f
10: 003f 003f 0003 0034 003f 003f 003f 003f 003f 0003
20: 0000 0000 0003 0003 000f 0010
Remote handshake status:
00: 0002 0000 0000 0000 0000 0000 0030 003f 003f 003f
10: 003f 000f 0000 0030 003f 003f 003f 003f 000f 0000
20: 0000 0000 0003 0003 0003 0004 0010
Table 7 Command output
|
Field |
Description |
|
Mode |
Operating mode: CPE or CO. |
|
Standard |
Available standard: · Auto-negotiation (default). · ADSL2 (G992.3). · ADSL2+ (G992.5). · G.DMT (G992.1). · G.Lite (G992.2). · T1.413. · G.BIS. The value of this field is predefined and cannot be modified. |
|
Annex |
Annex standard used by the line: · A—Annex A. · B—Annex B. |
|
Wire type |
Wire type: two-wire or four-wire. |
|
Current margin |
Current SNR margin. |
|
SNEXT margin |
Lowest SNR margin. |
|
PSD mode |
PSD mode: symmetric or asymmetric. |
display dsl status
Use display dsl status to display status information for a G.SHDSL interface.
Syntax
display dsl status interface atm interface-number
Views
Any view
Predefined user roles
network-admin
network-operator
Parameters
interface atm interface-number: Specifies a G.SHDSL interface by its number.
Examples
# Display status information for ATM 3/2/1 when this four-wire G.SHDSL interface is up.
<Sysname> display dsl status interface atm 3/2/1
Operating Mode: CPE
DSL Mode: SHDSLAnnex B
Configured Wire Type: 4
Line A Statistics since last activation:
CRC: 0
LOSW Defect: 0
ES: 0
SES: 0
UAS: 0
TX EOC: 0
RX EOC: 0
Line A status:
Xcvr Op State: Data Mode
Last Fail Op State: 0x00
Line Rate(Kbps): 2312
Wire Type: 4
SNR Margin(dB): 13.30
Loop Attenuation(dB): 0.00
RecvGain(dB): 5.86
TxPower(dBm): 9.50
Power Backoff: enable
Power Backoff Level: 5
Tip/Ring Reversal: Reversed
FrmOH Stat: 0x00
Rmt Encoder A: 0x0000016e
Rmt Encoder B: 0x00000331
Rmt NSF Cusdata: 0x0000
Rmt NSF CusID: 0x0000
Rmt Country Code: 0x00b5
Rmt Provider Code: GSPN
Rmt Vendor Data: 0x12 0x34 0x56 0x78
0x12 0x34 0x56 0x78
Line B Statistics since last activation:
CRC: 1
LOSW Defect: 1
ES: 1
SES: 1
UAS: 0
TX EOC: 0
RX EOC: 0
Line B status:
Xcvr Op State: Data Mode
Last Fail Op State: 0x00
Line Rate(Kbps): 2312
Wire Type: 4
SNR Margin(dB): 12.30
Loop Attenuation(dB): 0.00
RecvGain(dB): 5.28
TxPower(dBm): 9.50
Power Backoff: enable
Power Backoff Level: 5
Tip/Ring Reversal: Reversed
FrmOH Stat: 0x00
Rmt Encoder A: 0x0000016e
Rmt Encoder B: 0x00000331
Rmt NSF Cusdata: 0x0000
Rmt NSF CusID: 0x0000
Rmt Country Code: 0x00b5
Rmt Provider Code: GSPN
Rmt Vendor Data: 0x12 0x34 0x56 0x78
0x12 0x34 0x56 0x78
Table 8 Command output
|
Field |
Description |
|
Operating Mode |
Operating mode: CPE or CO. |
|
DSL Mode |
Annex standard adopted by the line: · SHDSL Annex A—Annex A. · SHDSL Annex B—Annex B. |
|
Configured Wire Type |
Wire type: two-wire or four-wire. |
|
CRC |
Number of CRC errors. |
|
LOSW Defect |
Number of LOSW errors. |
|
ES |
Number of errors per second. |
|
SES |
Number of serious errors per second. |
|
UAS |
Number of unavailable statuses per second. |
|
TX EOC |
Number of EOC cells transmitted. |
|
RX EOC |
Number of EOC cells received. |
|
Xcvr Op State |
Operating state of the transceiver: · Idle. · Data Mode. · HandShaking. · Training. |
|
Last Fail Op State |
Operating state of the transceiver during the last negotiation failure. Available values are the same as the values of Xcvr Op State. |
|
Wire Type |
Wire type: two-wire or four-wire. |
|
RecvGain(dB) |
Receive gain. |
|
TxPower(dBm) |
Transmit power. |
|
Power Backoff |
Power backoff state. |
|
Tip/Ring Reversal |
Tip/Ring reversal state. |
|
FrmOH Stat |
Frame overflow state. |
|
Rmt Encoder A |
Remote encoder coefficient A. |
|
Rmt Encoder B |
Remote encoder coefficient B. |
|
Rmt NSF Cusdata |
Remote user data in non-standard format. |
|
Rmt NSF CusID |
Remote user ID in non-standard format. |
|
Rmt Country Code |
Remote country code. |
|
Rmt Provider Code |
Remote chip provider code. |
|
Rmt Vendor Data |
Remote vendor code. |
display dsl version
Use display dsl version to display the version information and available capabilities for a G.SHDSL interface.
Syntax
display dsl version interface atm interface-number
Views
Any view
Predefined user roles
network-admin
network-operator
Parameters
interface atm interface-number: Specifies a G.SHDSL interface by its number.
Examples
# Display the version information and available capabilities for G.SHDSL interface ATM 3/2/1.
<Sysname> display dsl version interface atm 3/2/1
DSL Line Type: G.SHDSL
ATM SAR Device: 0x823614f1
ATM SAR Revision: 0x02
Chipset Vendor: GSPN
Firmware Rel-Rev: R2.3.1-0
DSP Version: 1
PCB Version: 0.0
CPLD Version: 0.0
Driver Version: 2.0
Hardware Version: 1.0
ITU G991.2 ANNEX A: Supported
ITU G991.2 ANNEX B: Supported
Table 9 Command output
|
Field |
Description |
|
ATM SAR Device |
Identification of the SAR chip. |
|
ATM SAR Revision |
Revision identification of the SAR chip. |
|
Firmware Rel-Rev |
Identification and version information about firmware. |
|
ITU G991.2 ANNEX A, ITU G991.2 ANNEX B |
Available standards and annex standards. |
shdsl annex
Use shdsl annex to set the annex standard for a G.SHDSL interface.
Use undo shdsl annex to restore the default.
Syntax
shdsl annex { a | b }
undo shdsl annex
Default
The annex standard for a G.SHDSL interface is Annex B.
Views
ATM SHDSL_4WIRE interface view
ATM SHDSL_8WIRE_BIS interface view
Predefined user roles
network-admin
Parameters
a: Specifies the Annex A standard.
b: Specifies the Annex B standard.
Usage guidelines
If the CO equipment and the CPE use different Annex standards, the line cannot be activated.
Annex A is dominant in North America and Annex B is dominant in Europe. When you set the annex standard, consider the standard used in your region.
Examples
# Set G.SHDSL interface ATM 3/2/1 to adopt annex A.
<Sysname> system-view
[Sysname] interface atm 3/2/1
[Sysname-ATM3/2/1] shdsl annex a
shdsl capability
Use shdsl capability to set the capacity type for a G.SHDSL interface.
Use undo shdsl capability to restore the default.
Syntax
shdsl capability { auto | g-shdsl | g-shdsl-bis }
undo shdsl capability
Default
In CPE mode, the auto type is applied.
In CO mode, the g-shdsl-bis type is applied.
Views
ATM SHDSL_4WIRE interface view
ATM SHDSL_8WIRE_BIS interface view
Predefined user roles
network-admin
Parameters
auto: Specifies the auto type.
g-shdsl: Specifies the G.SHDSL type.
g-shdsl-bis: Specifies the G.SHDSL.bis type.
Usage guidelines
In CPE mode, the g-shdsl, g-shdsl-bis, and auto keywords are available.
In CO mode, only the g-shdsl and g-shdsl-bis keywords are available.
When you configure the shdsl mode command, the default settings in each mode are automatically restored.
Interfaces on the two ends must be configured with the same capacity type.
Examples
# Set the capacity type for interface ATM 3/2/1 to G.SHDSL.
<Sysname> system-view
[Sysname] interface atm 3/2/1
[Sysname-ATM3/2/1] shdsl capability g-shdsl
Related commands
shdsl mode
shdsl line-probing
Use the shdsl line-probing enable command to enable SHDSL line probing.
Use the undo shdsl line-probing enable command to disable SHDSL line probing.
Syntax
shdsl line-probing enable
undo shdsl line-probing enable
Default
SHDSL line probing is enabled.
Views
ATM SHDSL_4WIRE interface view
ATM SHDSL_8WIRE_BIS interface view
Predefined user roles
network-admin
Usage guidelines
With line probing enabled, the system performs the line probing function to find the optimal data transmission rate during line activation.
With line probing disabled, the system chooses the highest data transmission rate from the data transmission rates supported by both the CPE and CO. The amount of time available for activating the SHDSL lines is reduced because the line rate adaptation process is skipped.
Examples
# Disable SHDSL line probing on interface ATM 3/2/1.
<Sysname> system-view
[Sysname] interface atm 3/2/1
[Sysname-ATM3/2/1] undo shdsl line-probing enable
Related commands
activate
shdsl mode
Use shdsl mode to set the operating mode for a G.SHDSL interface.
Use undo shdsl mode to restore the default.
Syntax
shdsl mode { co | cpe }
undo shdsl mode
Default
A G.SHDSL interface operates in CPE mode.
Views
ATM SHDSL_4WIRE interface view
ATM SHDSL_8WIRE_BIS interface view
Predefined user roles
network-admin
Parameters
co: Specifies the CO mode.
cpe: Specifies the CPE mode.
Usage guidelines
For a back-to-back connection, set one end to CO mode and the other end to CPE mode.
Examples
# Set the operating mode of interface ATM 3/2/1 to CO.
<Sysname> system-view
[Sysname] interface atm 3/2/1
[Sysname-ATM3/2/1] shdsl mode co
shdsl pam
Use shdsl pam to set the pulse amplitude modulation (PAM) constellation for a G.SHDSL interface.
Use undo shdsl pam to restore the default.
Syntax
shdsl pam { 16 | 32 | auto }
undo shdsl pam
Default
A G.SHDSL interface automatically selects its PAM.
Views
ATM SHDSL_4WIRE interface view
ATM SHDSL_8WIRE_BIS interface view
Predefined user roles
network-admin
Parameters
16: Specifies the 16-PAM constellation, where the rate range is 192 kbps to 3840 kbps.
32: Specifies the 32-PAM constellation, where the rate range is 768 kbps to 5696 in kbps.
auto: Enables automatic PAM constellation selection. If 32 PAM and 16 PAM are supported on both ends, 32 PAM is automatically selected.
Usage guidelines
PAM is a constellation-like coding format of digital lines.
Use this command to configure the digital signal modulation mode for PHY chips.
32 PAM constellation is not supported by interfaces with the G.SHDSL capacity type.
Examples
# Configure the 16-PAM constellation for interface ATM 3/2/1.
<Sysname> system-view
[Sysname] interface atm 3/2/1
[Sysname-ATM3/2/1] shdsl pam 16
Related commands
shdsl capability
shdsl pbo
Use shdsl pbo to tune the transmission power of a G.SHDSL interface.
Use undo shdsl pbo to restore the default.
Syntax
shdsl pbo { value | auto }
undo shdsl pbo
Default
A G.SHDSL interface automatically tunes its transmission power.
Views
ATM SHDSL_4WIRE interface view
ATM SHDSL_8WIRE_BIS interface view
Predefined user roles
network-admin
Parameters
auto: Automatically tunes the transmission power.
value: Specifies a power backoff (PBO) value (in dB) to restrict the transmission power. The value range is 0 to 31.
Usage guidelines
A G.SHDSL interface automatically tunes its transmission power according to the line noise to ensure an appropriate signal-to-noise ratio. When the line noise is known or the automatically tuned value is inaccurate, use this command to tune the transmission power manually.
Examples
# Tune the transmission power of G.SHDSL interface ATM 3/2/1 to 20 dB.
<Sysname> system-view
[Sysname] interface atm 3/2/1
[Sysname-ATM3/2/1] shdsl pbo 20
shdsl psd
Use shdsl psd to set the PSD for a G.SHDSL interface.
Use undo shdsl psd to restore the default.
Syntax
shdsl psd { asymmetry | symmetry }
undo shdsl psd
Default
The PSD of a G.SHDSL interface is in symmetric mode.
Views
ATM SHDSL_4WIRE interface view
ATM SHDSL_8WIRE_BIS interface view
Predefined user roles
network-admin
Parameters
asymmetry: Specifies the asymmetric mode.
symmetry: Specifies the symmetric mode.
Usage guidelines
PSD is the amount of power per unit (density) of frequency (spectral) as a function of the frequency. PSD describes how the power of a time series is distributed with frequency.
Examples
# Set the PSD of G.SHDSL interface ATM 3/2/1 to asymmetric mode.
<Sysname> system-view
[Sysname] interface atm 3/2/1
[Sysname-ATM3/2/1] shdsl psd asymmetry
shdsl rate
Use shdsl rate to set the single-pair interface rate for a G.SHDSL interface.
Use undo shdsl rate to restore the default.
Syntax
shdsl rate { rate | auto }
undo shdsl rate
Default
For ATM SHDSL 8WIRE_BIS interfaces, the single-pair interface rate is automatically negotiated.
For ATM SHDSL_4WIRE interfaces, the single-pair interface rate is automatically negotiated in two-wire mode, and is 2312 kbps in other modes.
Views
ATM SHDSL_4WIRE interface view
ATM SHDSL_8WIRE_BIS interface view
Predefined user roles
network-admin
Parameters
rate: Specifies the maximum single-pair rate for the G.SHDSL interface. The value range is 192 kbps to 2312 kbps for ATM SHDSL_4WIRE interfaces. The value range is 192 kbps to 5696 kbps for ATM SHDSL_8WIRE_BIS interfaces.
auto: Specifies the auto-negotiation mode.
Usage guidelines
The maximum downlink rate might not reach the specified rate because of the restriction imposed by the CO equipment and line conditions. If you select the auto mode, CPE and CO can negotiate a rate commensurate with the current line condition during the activation process. If fixed rates are set at both ends, the two parties negotiate a rate. If the lower rate of the two cannot be provided, the line cannot be activated.
· For four-wire (dual-pair) G.SHDSL interfaces, the interface rate is two times higher than the single-pair rate. For example, if you set the single-pair rate to 2312 kbps, the four-wire interface rate is 4624 kbps.
· Because four-wire G.SHDSL interfaces cannot negotiate a rate, do not specify the auto mode for them.
Examples
# Set ATM 3/2/1 to operate in the auto-negotiation mode.
<Sysname> system-view
[Sysname] interface atm 3/2/1
[Sysname-ATM3/2/1] shdsl rate auto
shdsl snr-margin
Use shdsl snr-margin to set a margin to signal-to-noise ratio (SNR).
Use undo shdsl snr-margin to restore the default.
Syntax
shdsl snr-margin [ current current-margin-value ] [ snext snext-margin-value ]
undo shdsl snr-margin
Default
The target margin for the current SNR is 2.
The target margin for the lowest SNR is 0.
Views
ATM SHDSL_4WIRE interface view
ATM SHDSL_8WIRE_BIS interface view
Predefined user roles
network-admin
Parameters
current current-margin-value: Specifies the target margin for the current SNR, in the range of 0 to 10. During SHDSL line training, this target margin is considered in addition to the current SNR threshold. A larger margin value results in increased link stability and enhanced noise suppression ability.
snext snext-margin-value: Specifies the target margin for the lowest SNR, in the range of 0 to 10. During SHDSL line training, this target margin is considered in addition to the lowest SNR threshold. A larger margin value results in increased link stability and enhanced noise suppression ability.
Usage guidelines
Setting the margin can affect the maximum rate of the line. When the line condition is good, you can set a small margin to obtain higher rates. When the line is noisy, a small margin might cause disconnections.
Examples
# Set the SNR margin to 5 for interface ATM 3/2/1.
<Sysname> system-view
[Sysname] interface atm 3/2/1
[Sysname-ATM3/2/1] shdsl snr-margin current 5
shdsl wire
Use shdsl wire to set the wire mode for a four-wire SHDSL interface or an eight-wire SHDSL interface.
Use undo shdsl wire to restore the default.
Syntax
In ATM SHDSL_4WIRE interface view:
shdsl wire { 2 | 4-auto-enhanced | 4-enhanced | 4-standard }
undo shdsl wire
In ATM SHDSL_8WIRE_BIS interface view:
shdsl wire { 2 | 4-enhanced | 4-standard | 6 | 8 | auto }
undo shdsl wire
Default
An ATM SHDSL_4WIRE interface operates in the four-wire enhanced mode.
An ATM SHDSL_8WIRE_BIS interface operates in the eight-wire mode.
Views
ATM SHDSL_4WIRE interface view
ATM SHDSL_8WIRE_BIS interface view
Predefined user roles
network-admin
Parameters
2: Specifies the two-wire mode.
4-auto-enhanced: Specifies the four-wire automatic mode. The four-wire enhanced mode is used first when the local end negotiates with the remote end. If the remote end is operating in four-wire standard mode, the local end uses the four-wire standard mode for negotiation.
4-enhanced: Specifies the four-wire enhanced mode. In this mode, one pair of the four wires starts negotiation with the remote end first. Then the other pair starts negotiation with the remote end.
4-standard: Specifies the four-wire standard mode. In this mode, the two pairs of these four wires must start negotiation at the same time. In addition, the remote end must be set to operate in four-wire standard mode as well.
6: Specifies the six-wire mode.
8: Specifies the eight-wire mode.
auto: Specifies the automatic mode. The local end uses the operating mode of the remote end to negotiate with the remote end.
Usage guidelines
When you use the shdsl wire command, select the correct wire mode according to the configurations of the remote interface. If you cannot determine the wire mode of the remote interface, configure the local interface to operate in the auto mode.
Examples
# Set SHDSL_4WIRE ATM interface ATM 3/2/1 to operate in the four-wire automatic mode.
<Sysname> system-view
[Sysname] interface atm 3/2/1
[Sysname-ATM3/2/1] shdsl wire 4-auto-enhanced
EFM interface commands
This section describes commands for configuring EFM SHDSL_8WIRE_BIS interfaces (eight-wire G.SHDSL.BIS interfaces).
display dsl configuration
Use display dsl configuration to display the configurations for an EFM interface.
Syntax
display dsl configuration interface efm interface-number
Views
Any view
Predefined user roles
network-admin
network-operator
Parameters
interface efm interface-number: Specifies an EFM interface by its number.
Examples
# Display the configurations for EFM interface EFM 3/2/1.
<Sysname> display dsl configuration interface efm 3/2/1
Line parameter and mode configuration:
Mode: CPE
Standard: G.991.2
Annex: B
Wire type: 2
Line rate: Auto Adaptive
Current margin: 2
SNEXT margin: 0
Psd mode: Sym PSD
Actual handshake status:
00: 0002 0000 0000 0000 0000 0000 0000 0000 0000 0000
10: 0000 0008 0000 0000 0000 0000 0000 0000 0008 0000
20: 0000 0000 0002 0002 0004 0010
Local handshake status:
00: 0002 0001 0000 0000 0000 0000 0034 003f 003f 003f
10: 003f 003f 0003 0034 003f 003f 003f 003f 003f 0003
20: 0000 0000 0003 0003 000f 0010
Remote handshake status:
00: 0002 0000 0000 0000 0000 0000 0030 003f 003f 003f
10: 003f 000f 0000 0030 003f 003f 003f 003f 000f 0000
20: 0000 0000 0003 0003 0004 0010
Table 10 Command output
|
Field |
Description |
|
Mode |
Operating mode: CPE or CO. |
|
Standard |
Available standard: · Auto-negotiation (default). · ADSL2 (G992.3). · ADSL2+ (G992.5). · G.DMT (G992.1). · G.Lite (G992.2). · T1.413. · G.BIS. The value of this field is predefined and cannot be modified. |
|
Annex |
Annex standard used by the line: · A—Annex A. · B—Annex B. |
|
Wire type |
Wire type: two-wire or four-wire. |
|
PSD mode |
PSD mode: symmetric or asymmetric. |
display dsl status
Use display dsl status to display status information for an EFM interface.
Syntax
display dsl status interface efm interface-number
Views
Any view
Predefined user roles
network-admin
network-operator
Parameters
interface efm interface-number: Specifies an EFM interface by its number.
Examples
# Display status information for EFM 3/2/1 when this two-wire EFM interface is up.
<Sysname> display dsl status interface efm 3/2/1
Operating Mode: CPE
DSL Mode: SHDSL Annex B
Configured Wire Type: 2
Line A Statistics since last activation:
CRC: 0
LOSW Defect: 0
ES: 0
SES: 0
UAS: 0
TX EOC: 0
RX EOC: 0
Line A status:
Xcvr Op State: Data Mode
Last Fail Op State: 0x00
Line Rate(Kbps): 2312
Wire Type: 2
SNR Margin(dB): 16.30
Loop Attenuation(dB): 0.00
RecvGain(dB): 6.07
TxPower(dBm): 9.50
Power Backoff: enable
Power Backoff Level: 5
Tip/Ring Reversal: Reversed
FrmOH Stat: 0x00
Rmt Encoder A: 0x0000016e
Rmt Encoder B: 0x00000331
Rmt NSF Cusdata: 0x0000
Rmt NSF CusID: 0x0000
Rmt Country Code: 0x00b5
Rmt Provider Code: GSPN
Rmt Vendor Data: 0x12 0x34 0x56 0x78
0x12 0x34 0x56 0x78
# Display status information for EFM 3/2/1 when this four-wire EFM interface is up.
<Sysname> display dsl status interface efm 3/2/1
Operating Mode: CPE
DSL Mode: SHDSLAnnex B
Configured Wire Type: 4
Line A Statistics since last activation:
CRC: 0
LOS WDefect: 0
ES: 0
SES: 0
UAS: 0
TX EOC: 0
RX EOC: 0
Line A status:
Xcvr Op State: Data Mode
Last Fail Op State: 0x00
Line Rate(Kbps): 2312
Wire Type: 4
SNR Margin(dB): 13.30
Loop Attenuation(dB): 0.00
RecvGain(dB): 5.86
TxPower(dBm): 9.50
Power Backoff: enable
Power Backoff Level: 5
Tip/Ring Reversal: Reversed
FrmOH Stat: 0x00
Rmt Encoder A: 0x0000016e
Rmt Encoder B: 0x00000331
Rmt NSF Cusdata: 0x0000
Rmt NSF CusID: 0x0000
Rmt Country Code: 0x00b5
Rmt Provider Code: GSPN
Rmt Vendor Data: 0x12 0x34 0x56 0x78
0x12 0x34 0x56 0x78
Line B Statistics since last activation:
CRC: 1
LOSW Defect: 1
ES: 1
SES: 1
UAS: 0
TX EOC: 0
RX EOC: 0
Line B status:
Xcvr Op State: Data Mode
Last Fail Op State: 0x00
Line Rate(Kbps): 2312
Wire Type: 4
SNR Margin(dB): 12.30
Loop Attenuation(dB): 0.00
RecvGain(dB): 5.28
TxPower(dBm): 9.50
Power Backoff: enable
Power Backoff Level: 5
Tip/Ring Reversal: Reversed
FrmOH Stat: 0x00
Rmt Encoder A: 0x0000016e
Rmt Encoder B: 0x00000331
Rmt NSF Cusdata: 0x0000
Rmt NSF CusID: 0x0000
Rmt Country Code: 0x00b5
Rmt Provider Code: GSPN
Rmt Vendor Data: 0x12 0x34 0x56 0x78
0x12 0x34 0x56 0x78
Table 11 Command output
|
Field |
Description |
|
Operating Mode |
Operating mode: CPE or CO. |
|
DSL Mode |
Annex standard adopted by the line: · A—Annex A. · B—Annex B. |
|
Configured Wire Type |
Wire type: two-wire or four-wire. |
|
CRC |
Number of CRC errors. |
|
LOSW Defect |
Number of LOSW errors. |
|
ES |
Number of errors per second. |
|
SES |
Number of serious errors per second. |
|
UAS |
Number of available statuses per second. |
|
TX EOC |
Number of ECO sources transmitted. |
|
RX EOC |
Number of ECO sources received. |
|
Xcvr Op State |
Operating state of the transceiver: · Idle. · Data Mode. · HandShaking. · Training. |
|
Last Fail Op State |
Operating state of the transceiver during the last negotiation failure. Available values are the same as the values of Xcvr Op State. |
|
Wire Type |
Wire type: two-wire or four-wire. |
|
RecvGain(dB) |
Receive gain. |
|
TxPower(dBm) |
Transmit power. |
|
Power Backoff |
Power backoff state. |
|
Tip/Ring Reversal |
Tip/Ring reversal state. |
|
FrmOH Stat |
Frame overflow state. |
|
Rmt Encoder A |
Remote encoder coefficient A. |
|
Rmt Encoder B |
Remote encoder coefficient B. |
|
Rmt NSF Cusdata |
Remote user data in non-standard format. |
|
Rmt NSF CusID |
Remote user ID in non-standard format. |
|
Rmt Country Code |
Remote country code. |
|
Rmt Provider Code |
Remote chip provider code. |
|
Rmt Vendor Data |
Remote vendor code. |
display dsl version
Use display dsl version to display the version information and available capabilities for an EFM interface.
Syntax
display dsl version interface efm interface-number
Views
Any view
Predefined user roles
network-admin
network-operator
Parameters
interface efm interface-number: Specifies an EFM interface by its number.
Examples
# Display the version information and available capabilities for interface EFM 3/2/1.
<Sysname> display dsl version interface efm 3/2/1
DSL Line Type: G.SHDSL
ATM SAR Device: 0x823614f1
ATM SAR Revision: 0x02
Chipset Vendor: GSPN
Firmware Rel-Rev: R2.3.1-0
DSP Version: 1
PCB Version: 0.0
CPLD Version: 0.0
Driver Version: 2.0
Hardware Version: 1.0
ITU G991.2 ANNEX A: Supported
ITU G991.2 ANNEX B: Supported
Table 12 Command output
|
Field |
Description |
|
ATM SAR Device |
Identification of the SAR chip. |
|
ATM SAR Revision |
Revision identification of the SAR chip. |
|
Chipset Vendor |
Vendor identification of DSL Chipsets. |
|
Firmware Rel-Rev |
Identification and version information about firmware. |
|
ITU G991.2 ANNEX A, ITU G991.2 ANNEX B |
Standards and annex standards available on the interface. |
display interface efm
Use display interface efm to display information about an EFM interface.
Syntax
display interface [ efm [ interface-number ] ] [ brief [ description | down ] ]
Views
Any view
Predefined user roles
network-admin
network-operator
Parameters
efm [ interface-number ]: Specifies an EFM interface by its number. If you do not specify the efm keyword, this command displays information about all interfaces except VA interfaces on the device. If you specify the efm keyword but do not specify the interface-number argument, this command displays information about all EFM interfaces. For more information about VA interfaces, see PPPoE configuration in Layer 2—WAN Access Configuration Guide.
brief: Displays brief interface information. If you do not specify this keyword, the command displays detailed interface information.
description: Displays complete interface descriptions. If you do not specify this keyword, the command displays only the first 27 characters of interface descriptions.
down: Displays information about interfaces in physically DOWN state and the causes. If you do not specify this keyword, the command displays information about interfaces in all states.
Examples
# Display detailed information about interface EFM 3/2/1.
<Sysname> display interface efm 3/2/1
EFM3/2/1
Current state: DOWN
Line protocol state: DOWN
Description: EFM3/2/1 Interface
Bandwidth: 20000kbps
Maximum transmission unit: 1500
Internet protocol processing: Disabled
IP Packet Frame Type: Ethernet II, hardware address: b8af-67fa-10f0
IPv6 Packet Frame Type: Ethernet II, hardware address: b8af-67fa-10f0
2Wire-Shdsl Line, Operation State: DOWN_NOT_READY, Operating Mode: CO
Last link flapping: 4 days 6 hours 39 minutes
Last clearing of counters: Never
Last 300 seconds input rate: 0.00 bytes/sec, 0 bits/sec, 0.00 packets/sec
Last 300 seconds output rate: 0.00 bytes/sec, 0 bits/sec, 0.00 packets/sec
Input:
0 packets, 0 bytes, 0 buffers
0 errors, 0 crcs, 0 lens, 0 giants
0 pads, 0 aborts, 0 timeouts
0 overflows, 0 overruns, 0 no buffer
Output:
0 packets, 0 bytes, 0 buffers
0 errors, 0 overflows, 0 underruns
# Display brief information about interface EFM 3/2/1.
<Sysname> display interface efm 3/2/1 brief
Brief information on interfaces in route mode:
Link: ADM - administratively down; Stby - standby
Protocol: (s) - spoofing
Interface Link Protocol Primary IP Description
EFM3/2/1 UP UP(s) --
# Display brief information about all EFM interfaces in physically DOWN state and the causes.
<Sysname> display interface efm brief down
Brief information on interfaces in route mode:
Link: ADM - administratively down; Stby - standby
Interface Link Cause
EFM3/2/1 DOWN Not connected
Table 13 Command output
|
Field |
Description |
|
Current state |
Physical link state of the interface: · Administratively DOWN—The interface has been shut down by using the shutdown command. · DOWN—The interface is administratively up, but its physical state is down (possibly because no physical link exists or the link has failed). · UP—The interface is both administratively and physically up. |
|
Line protocol state |
Data link layer state of the interface. The state is determined through automatic parameter negotiation at the data link layer. · UP—The data link layer protocol is up. · DOWN—The data link layer protocol is down. |
|
Description |
Description of the interface. |
|
Bandwidth |
Expected bandwidth of the interface. |
|
Maximum transmission unit |
MTU of the interface. |
|
Internet protocol processing: Disabled |
The interface is not assigned an IP address and cannot process IP packets. |
|
Internet Address |
IP address of the interface. The primary attribute indicates that the address is the primary IP address. |
|
IP Packet Frame Type |
IPv4 packet framing format. |
|
IPv6 Packet Frame Type |
IPv6 packet framing format. |
|
2Wire-Shdsl Line |
Wire mode: · 2Wire-Shdsl. · 4Wire-Shdsl. · 6Wire-Shdsl. · 8Wire-Shdsl. |
|
Operation State |
Operating state: · DOWN_NOT_READY—The line is down and not ready. · DOWN_ READY—The line is down and ready. · INITIALIZING—The line is in negotiation. · UP_DATA_MODE—The line is up and in data mode. |
|
Operating Mode |
Operating mode: CO or CPE. |
|
Last link flapping |
The amount of time that has elapsed since the most recent physical state change of the interface. This field displays Never if the interface has been physically down since device startup. |
|
Last clearing of counters |
Time when the reset counters interface command was last used to clear the interface statistics. This field displays Never if the reset counters interface command has never been used on the interface since device startup. |
|
Last 300 seconds input rate: 0.00 bytes/sec, 0 bits/sec, 0.00 packets/sec |
Average input rates (in Bps, bps, and pps) for the last 300 seconds. |
|
Last 300 seconds output rate: 0.00 bytes/sec, 0 bits/sec, 0.00 packets/sec |
Average output rates (in Bps, bps, and pps) for the last 300 seconds. |
|
Input: 0 packets, 0 bytes, 0 buffers 0 errors, 0 crcs, 0 lens, 0 giants 0 pads, 0 aborts, 0 timeouts 0 overflows, 0 overruns, 0 no buffer |
Packet receiving parameters: · packets—Number of total packets received. · bytes—Number of total bytes received. · buffers—Number of buffers used to receive packets. · errors—Number of error packets detected at the physical layer. · crcs—Number of CRC errors. · lens—Number of packets received with invalid lengths. · giants—Number of packets received with lengths exceeding the specified value. · pads—Number of errors occurred in the padding process. · aborts—Number of anomalous errors. · timeouts—Number of packet receiving timeouts. · overflows—Number of chip FIFO overflow errors occurred. · overruns—Number of packets not processed due to higher receiving rate than the forwarding rate. · no buffer—Number of errors caused by insufficient system resources. |
|
Output: 0 packets, 0 bytes, 0 buffers 0 errors, 0 overflows, 0 underruns |
Packet transmission parameters: · packets—Number of total packets transmitted. · bytes—Number of total bytes transmitted. · buffers—Number of buffers used to transmit packets. · errors—Number of error packets detected at the physical layer. · overflows—Number of chip FIFO overflow errors occurred. · underruns—Number of packets not transmitted due to lower memory reading rate than the forwarding rate. |
|
Brief information on interfaces in route mode |
Brief information about Layer 3 interfaces. |
|
Interface |
Abbreviation of the interface name. |
|
Link |
Physical link state of the interface: · UP—The interface is physically up. · DOWN—The interface is physically down. · ADM—The interface has been shut down by using the shutdown command. To restore the physical state of the interface, use the undo shutdown command. · Stby—The interface is a backup interface in standby state. To see the primary interface, use the display interface-backup state command. |
|
Protocol |
Data link layer protocol state of the interface: · UP—The data link layer protocol of the interface is up. · DOWN—The data link layer protocol of the interface is down. · UP(s)—The data link layer protocol of the interface is up, but the link is an on-demand link or does not exist. The (s) attribute represents the spoofing flag. |
|
Primary IP |
Primary IP address of the interface. This field displays two hyphens (--) if the interface does not have an IP address. |
|
Description |
Description of the interface. |
|
Cause |
Cause for the physical link state of an interface to be DOWN: · Administratively—The interface has been manually shut down by using the shutdown command. To restore the physical state of the interface, use the undo shutdown command. · Not connected—No physical connection exists (possibly because the network cable is disconnected or faulty). |
interface efm
Use interface efm to create an EFM subinterface and enter its view, or enter the view of an existing EFM interface or EFM subinterface.
Use undo interface efm to remove an EFM subinterface.
Syntax
interface efm { interface-number | interface-number.subnumber }
undo interface efm interface-number.subnumber
Default
No EFM subinterfaces exist.
Views
System view
Predefined user roles
network-admin
Parameters
interface-number: Specifies an EFM interface by its number.
interface-number.subnumber: Specifies an EFM subinterface by its number. The interface-number argument represents the number of the EFM interface. The subnumber argument represents the number of the subinterface, in the range of 1 to 4094. You can create a maximum of 1024 EFM subinterfaces on an EFM interface.
Examples
# Enter EFM 3/2/1 interface view.
<Sysname> system-view
[Sysname] interface efm 3/2/1
[Sysname-EFM3/2/1]
# Create EFM subinterface EFM 3/2/1.1 and enter its view.
<Sysname> system-view
[Sysname] interface efm 3/2/1.1
[Sysname-EFM3/2/1.1]
shdsl annex
Use shdsl annex to set the annex standard for an EFM interface.
Use undo shdsl annex to restore the default.
Syntax
shdsl annex { a | b }
undo shdsl annex
Default
The annex standard for an EFM interface is Annex B.
Views
EFM SHDSL_8WIRE_BIS interface view
Predefined user roles
network-admin
Parameters
a: Specifies the Annex A standard.
b: Specifies the Annex B standard.
Usage guidelines
Both Annex A and Annex B are G.991.2 standards. Annex A is dominant in North America and Annex B is dominant in Europe. When you set the annex standard, consider the standard used in your region.
A link with different standard types at two ends cannot be activated.
Examples
# Set EFM interface EFM 3/2/1 to use the Annex A standard.
<Sysname> system-view
[Sysname] interface efm 3/2/1
[Sysname-EFM3/2/1] shdsl annex a
shdsl line-probing
Use shdsl line-probing enable to enable SHDSL line probing.
Use undo shdsl line-probing enable to disable SHDSL line probing.
Syntax
shdsl line-probing enable
undo shdsl line-probing enable
Default
SHDSL line probing is enabled.
Views
EFM SHDSL_8WIRE_BIS interface view
Predefined user roles
network-admin
Usage guidelines
With line probing enabled, the system performs the line probing function to find the optimal data transmission rate during line activation.
With line probing disabled, the system chooses the highest data transmission rate from the data transmission rates supported by both the CPE and CO. The amount of time available for activating the SHDSL lines is reduced because the line rate adaptation process is skipped.
Examples
# Disable SHDSL line probing on interface EFM 3/2/1.
<Sysname> system-view
[Sysname] interface efm 3/2/1
[Sysname-EFM3/2/1] undo shdsl line-probing enable
shdsl mode
Use shdsl mode to set the operating mode for an EFM interface.
Use undo shdsl mode to restore the default.
Syntax
shdsl mode { co | cpe }
undo shdsl mode
Default
The operating mode for an EFM interface is CPE mode.
Views
EFM SHDSL_8WIRE_BIS interface view
Predefined user roles
network-admin
Parameters
co: Specifies the CO mode.
cpe: Specifies the CPE mode.
Usage guidelines
For a back-to-back connection, set one end to CO mode and the other end to CPE mode.
Examples
# Set the operating mode of interface EFM 3/2/1 to CO.
<Sysname> system-view
[Sysname] interface efm 3/2/1
[Sysname-EFM3/2/1] shdsl mode co
shdsl pam
Use shdsl pam to set the PAM constellation for an EFM interface.
Use undo shdsl pam to restore the default.
Syntax
shdsl pam { 16 | 32 | auto }
undo shdsl pam
Default
An EFM interface automatically selects its PAM.
Views
EFM SHDSL_8WIRE_BIS interface view
Predefined user roles
network-admin
Parameters
16: Specifies the 16-PAM constellation, where the rate range is 192 kbps to 3840 kbps.
32: Specifies the 32-PAM constellation, where the rate range is 768 kbps to 5696 kbps.
auto: Enables automatic PAM constellation selection. If 32 PAM and 16 PAM are supported on both ends, 32 PAM is automatically selected.
Usage guidelines
PAM is a constellation-like coding format of digital lines.
Use this command to configure the digital signal modulation mode for PHY chips.
32 PAM constellation is not supported by interfaces with the G.SHDSL capacity type.
Examples
# Configure the 16-PAM constellation for interface EFM 3/2/1.
<Sysname> system-view
[Sysname] interface efm 3/2/1
[Sysname-EFM3/2/1] shdsl pam 16
Related commands
shdsl capability
shdsl pbo
Use shdsl pbo to set the power backoff (PBO) value.
Use undo shdsl pbo to restore the default.
Syntax
shdsl pbo { value | auto }
undo shdsl pbo
Default
An EFM interface automatically tunes its transmission power.
Views
EFM SHDSL_8WIRE_BIS interface view
Predefined user roles
network-admin
Parameters
auto: Automatically tunes the transmission power.
value: Specifies a PBO value (in dB) to restrict the transmission power. The value range is 0 to 31.
Usage guidelines
An EFM interface automatically tunes its transmission power according to the line noise to ensure an appropriate signal-to-noise ratio. When the line noise is known or the automatically tuned value is inaccurate, use this command to tune the transmission power manually.
Examples
# Tune the transmission power of interface EFM 3/2/1 to 20 dB.
<Sysname> system-view
[Sysname] interface efm 3/2/1
[Sysname-EFM3/2/1] shdsl pbo 20
shdsl psd
Use shdsl psd to set the PSD mode for an EFM interface.
Use undo shdsl psd to restore the default.
Syntax
shdsl psd { asymmetry | symmetry }
undo shdsl psd
Default
The PSD of the EFM interface is in symmetric mode.
Views
EFM SHDSL_8WIRE_BIS interface view
Predefined user roles
network-admin
Parameters
asymmetry: Specifies the asymmetric mode.
symmetry: Specifies the symmetric mode.
Usage guidelines
PSD is the amount of power per unit (density) of frequency (spectral) as a function of the frequency. PSD describes how the power of a time series is distributed with frequency.
Examples
# Set the PSD of interface EFM 3/2/1 to asymmetric mode.
<Sysname> system-view
[Sysname] interface efm 3/2/1
[Sysname-EFM3/2/1] shdsl psd asymmetry
shdsl rate
Use shdsl rate to set the single-pair interface rate for an EFM interface.
Use undo shdsl rate to restore the default.
Syntax
shdsl rate { rate | auto }
undo shdsl rate
Default
For EFM SHDSL 8WIRE_BIS interfaces, the single-pair interface rate is automatically negotiated.
Views
EFM SHDSL_8WIRE_BIS interface view
Predefined user roles
network-admin
Parameters
rate: Specifies the maximum single-pair rate for the EFM interface. The value range is 192 kbps to 5696 kbps for EFM SHDSL_8WIRE_BIS interfaces.
auto: Specifies the auto-negotiation mode.
Usage guidelines
The maximum downlink rate might not reach the specified rate because of the restriction imposed by the CO equipment and line conditions. If you select the auto mode, CPE and CO can negotiate a rate commensurate with the current line condition during the activation process. If fixed rates are set at both ends, the two parties negotiate a rate. In case the lower rate between them cannot be provided, the line cannot be activated.
Examples
# Set EFM 3/2/1 to operate in the auto-negotiation mode.
<Sysname> system-view
[Sysname] interface efm 3/2/1
[Sysname-EFM3/2/1] shdsl rate auto
shdsl snr-margin
Use shdsl snr-margin to set a target margin to SNR.
Use undo shdsl snr-margin to restore the default.
Syntax
shdsl snr-margin [ current current-margin-value ] [ snext snext-margin-value ]
undo shdsl snr-margin
Default
The target margin for the current SNR is 2.
The target margin for the lowest SNR is 0.
Views
EFM SHDSL_8WIRE_BIS interface view
Predefined user roles
network-admin
Parameters
current current-margin-value: Specifies the target margin for the current SNR, in the range of 0 to 10. During SHDSL line training, this target margin is considered in addition to the current SNR threshold. A larger margin value results in increased link stability and enhanced noise suppression ability.
snext snext-margin-value: Specifies the target margin for the lowest SNR, in the range of 0 to 10. During SHDSL line training, this target margin is considered in addition to the lowest SNR threshold. A larger margin value results in increased link stability and enhanced noise suppression ability.
Usage guidelines
Setting the margin can affect the maximum rate of the line. When the line condition is good, you can set a small margin to obtain higher rates. When the line is noisy, a small margin might cause disconnections.
Examples
# Set the SNR margin to 5 for interface EFM 3/2/1.
<Sysname> system-view
[Sysname] interface efm 3/2/1
[Sysname-EFM3/2/1] shdsl snr-margin current 5
shdsl wire
Use shdsl wire to set the wire mode for an eight-wire EFM interface.
Use undo shdsl wire to restore the default.
Syntax
In EFM SHDSL_8WIRE_BIS interface view:
shdsl wire { 2 | 4-enhanced | 4-standard | 6 | 8 | auto }
undo shdsl wire
Default
The EFM SHDSL_8WIRE_BIS interface operates in eight-wire mode.
Views
EFM SHDSL_8WIRE_BIS interface view
Predefined user roles
network-admin
Parameters
2: Specifies the two-wire mode.
4-enhanced: Specifies the four-wire enhanced mode. In this mode, one pair of the four wires starts negotiation with the remote end first, and then the other pair starts negotiation with the remote end.
4-standard: Specifies the four-wire standard mode. In this mode, the two pairs of these four wires must start negotiation at the same time. The remote end must be set to operate in four-wire standard mode.
6: Specifies the six-wire mode.
8: Specifies the eight-wire mode.
auto: Specifies the automatic mode. The local end uses the operating mode of the remote end to negotiate with the remote end.
Usage guidelines
When you use the shdsl wire command, select the correct wire mode according to the configurations of the remote interface. If you are not sure of the wire mode of the remote end, use the automatic mode for the local end to negotiate with the remote end.
Examples
# Set four-wire EFM interface EFM 3/2/1 to operate in the four-wire automatic mode.
<Sysname> system-view
[Sysname] interface efm 3/2/1
[Sysname-EFM3/2/1] shdsl wire 4-auto-enhanced
