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Example for Configuring an ADSL Interface
Networking Requirements
As shown in Figure 17-2, multiple hosts in Enterprise A access an enterprise gateway router. The router accesses a DSLAM over an ADSL 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 an ADSL line for Enterprise A so that the device can connect to the DSLAM by using an ADSL interface.
Configuration Roadmap
The configuration roadmap is as follows:
- Deactivate an ADSL interface.
- Set the same parameters on the device as those of the DSLAM. Parameters for the ADSL interface on the DSLAM: The transmission standard ADSL2+ is used, bit exchange and trellis coding are enabled, and seamless rate adaptation is disabled.
- Activate the ADSL interface.
Procedure
- Deactivate ATM1/0/0.
<Huawei> system-view [Huawei] sysname Router [Router] interface atm 1/0/0 [Router-Atm1/0/0] shutdown
- Configure the transmission standard ADSL2+ for the ADSL interface.
[Router-Atm1/0/0] adsl standard adsl2+ - Enable bit exchange on the ADSL interface.
[Router-Atm1/0/0] adsl bitswap on - Disable seamless rate adaptation on the ADSL interface.
[Router-Atm1/0/0] adsl sra off - Enable trellis coding on the ADSL 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 ADSL 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): 8184 Upstream max. attainable rate(Kbps) : 529 Downstream actual net data rate(Kbps): 4538 Upstream actual net data rate(Kbps) : 221 Downstream SNR margin(dB) : 13.1 Upstream SNR margin(dB) : 18.9 Downstream attenuation(dB) : 0.0 Upstream attenuation(dB) : 4.8 Downstream output power(dB) : 7.2 Upstream output power(dB) : -8.3 Downstream total cells : 3305378 Upstream total cells : 74443 Downstream data cells : 36545 Upstream data cells : 5447 Downstream bit errors : 124 Upstream bit errors : 365 Total drop cells : 241 Downstream total ES count : 0 Upstream total ES count : 0 Downstream total SES count : 0 Upstream total SES count : 0 Downstream total UAS count : 72 Upstream total UAS count : 72 Total AS count : 36 Line modulations G.Dmt : Disabled ADSL2 : Disabled T1.413 : Disabled AnnexL : Disabled ADSL2+ : Enabled AnnexM : Disabled Line capability Bitswap : On SRA : Off Trellis coding : On Board version vendor ID : BDCM:0x938f vendor serial : 0x938f Board ID: : 963281TAN Software version : 4.06L.03 Bootloader (CFE) version : 1.0.37-106.24 DSL PHY and driver version : A2pD033a.d23c Build timestamp : 20110221_2122 --------------------------------------------------------------
# Check the configuration and status of an ADSL interface.
[Router] display interface atm 1/0/0 Atm1/0/0 current state : UP Line protocol current state : UP Last line protocol up time : 2011-7-27 14:57:48 Description:HUAWEI, AR Series, Atm1/0/0 Interface Route Port,The Maximum Transmit Unit is 1488 Internet Address is 1.1.1.1/24 AAL enabled: AAL5, Maximum VCs: 16 VCs on main-interface: 1 (Total VCs: 1) VPs on main-interface: 0 (Total VPs: 0) Last physical up time : 2010-06-21 14:56:32 Last physical down time : 2010-06-21 14:56:31 Current system time: 2011-08-01 15:42:04 Port PHY type : ADSL The physical uptimes since the system startup : 2 Last 300 seconds input rate 0 bits/sec, 0 packets/sec Last 300 seconds output rate 0 bits/sec, 0 packets/sec Input correct packet: 0 packets, Input total data: 0 bytes OAM Cells: 0, ASM Cells: 0 Packet Errors: 0, Cell Errors: 0 Output: 0 packets, 0 bytes OAM Cells: 0, ASM Cells: 0 Input bandwidth utilization : 0% Output bandwidth utilization : 0%