Rate and give feedback:
Huawei uses machine translation combined with human proofreading to translate this document to different languages in order to help you better understand the content of this document.
Note: Even the most advanced machine translation cannot match the quality of professional translators.
Huawei shall not bear any responsibility for translation accuracy and it is recommended that you refer to the English document (a link for which has been provided).
Example for Connecting a VDSL Interface Working in ATM Mode to the Internet
Networking Requirements
As shown in Figure 18-2, multiple hosts in Enterprise A access an enterprise gateway. The router accesses a DSLAM over a VDSL line.
Enterprise A requires a data access solution that is easy to deploy and provides high-speed downstream transmission to meet requirements of data and video services. To meet these service requirements, the carrier provides a VDSL line for Enterprise A so that the router can connect to the DSLAM by using a VDSL interface.
Configuration Roadmap
The configuration roadmap is as follows:
- Deactivate a VDSL interface.
- Set the same parameters on the device as those of the DSLAM. Parameters for the VDSL interface on the DSLAM: The transmission standard auto is used, bit exchange and trellis coding are enabled, and seamless rate adaptation is disabled.
- Activate the VDSL interface.
The VDSL interface working in ATM mode is used as an example. The VDSL interface working in PTM mode has the similar configuration roadmap with this example.
Procedure
- Set the working mode for VDSL interfaces on the device to ATM.
<Huawei> system-view [Huawei] sysname Router [Router] set workmode slot 1 vdsl atm Warning: Changing the working mode will reset the board in slot 1. Continue? [y/ n]:y INFO: Resetting board[1] succeeded.
By default, a VDSL interface works in PTM mode.
- Deactivate ATM1/0/0.
[Router] interface atm 1/0/0 [Router-Atm1/0/0] shutdown
- Set the transmission standard for the VDSL interface to auto.
[Router-Atm1/0/0] adsl standard auto - Enable bit exchange on the VDSL interface.
[Router-Atm1/0/0] adsl bitswap on - Disable seamless rate adaptation on the VDSL interface.
[Router-Atm1/0/0] adsl sra off - Enable trellis coding on the VDSL interface.
[Router-Atm1/0/0] adsl trellis on - Activate ATM1/0/0.
[Router-Atm1/0/0] undo shutdown [Router-Atm1/0/0] quit
- Verify the configuration.
# Check the training status, transmission standard, line status, performance statistics, bit exchange status, seamless rate adaptation status, trellis coding status, and card version on the VDSL interface.
[Router] display dsl interface atm 1/0/0 -------------------------------------------------------------- DSL driver and PHY status Training Status : Showtime Transmission Mode : ADSL2 Line Status : No Defect Downstream max. attainable rate(Kbps): 8740 Upstream max. attainable rate(Kbps) : 703 Downstream actual net data rate(Kbps): 4399 Upstream actual net data rate(Kbps) : 570 Downstream SNR margin(dB) : 28.8 Upstream SNR margin(dB) : 27.0 Downstream attenuation(dB) : 0.0 Upstream attenuation(dB) : 0.0 Downstream output power(dBm) : 7.5 Upstream output power(dBm) : -4.8 Downstream total cells : 826623466 Upstream total cells : 413437274 Downstream data cells : 672651340 Upstream data cells : 246036145 Downstream bit errors : 0 Upstream bit errors : 0 Total drop cells : 0 Downstream total ES count : 0 Upstream total ES count : 0 Downstream total SES count : 0 Upstream total SES count : 0 Downstream total UAS count : 31 Upstream total UAS count : 31 Total AS count : 6820 Line modulations G.Dmt : Enabled T1.413 : Enabled ADSL2 : Enabled AnnexL : Enabled ADSL2+ : Enabled AnnexM : Enabled Line capability Bitswap : On SRA : Off Trellis coding : On Board version vendor ID : BDCM:0x938f vendor number : 0x938f vendor ID : 0xB5 0 "BDCM" 0 0 vendor serial : 10000000000000000000000000000000 Board ID : 963168MBV_17A Software version : 4.12L.08 Bootloader (CFE) version : 1.0.38-112.118 DSL PHY and driver version : A2pvbF038j.d24h Build timestamp : 20130706_1814 --------------------------------------------------------------# Check the configuration and status of a VDSL interface.
[Router] display interface atm 1/0/0 Atm1/0/0 current state : UP Line protocol current state : UP Last line protocol up time : 2012-03-14 13:49:37 Description:HUAWEI, AR Series, Atm1/0/0 Interface Route Port,The Maximum Transmit Unit is 1500 Internet protocol processing : disabled AAL enabled: AAL5, Maximum PVCs: 16 PVCs on main-interface: 0 (Total PVCs: 1) Last physical up time : 2012-03-14 13:49:37 Last physical down time : 2012-03-14 13:49:09 Current system time: 2012-03-14 16:58:58 Port PHY type : VDSL The physical up times since the system startup : 1 Last 300 seconds input rate 120 bits/sec, 0 packets/sec Last 300 seconds output rate 1112344 bits/sec, 1311 packets/sec Input: 469180146 packets, 49174924889 bytes OAM Cells: 47700, ASM Cells: 0 Packet Errors: 0, Packet Discards: 0 Cell Errors: 561137 Output: 94834890 packets, 10052499551 bytes OAM Cells: 0, ASM Cells: 0 Packet Errors: 0, Packet Discards: 0 Input bandwidth utilization : 0.01% Output bandwidth utilization : 4.33%