Configuring GFast or VDSL 35b Super Vectoring

G.Fast is a Digital Subscriber Line (DSL) protocol standard in the high-end SKUs of Cisco 1100 Integrated Services Routers (ISRs) series with a performance target upto 1Gbit/sec for short distances. This document provides basic configuration procedures of the GFast feature and contains the following sections:

Feature Information for GFast or VDSL35b Super Vectoring

The following table provides release information about the feature or features described in this module. This table lists only the software release that introduced support for a given feature in a given software release train. Unless noted otherwise, subsequent releases of that software release train also support that feature.

Use Cisco Feature Navigator to find information about platform support and Cisco software image support. To access Cisco Feature Navigator, go to www.cisco.com/​go/​cfn. An account on Cisco.com is not required.
Table 1 Feature Information for Configuring GFast or VDSL35b Super Vectoring

Feature Name

Releases

Feature Information

GFast or VDSL35b Super Vectoring

Cisco IOS XE Fuji Release 16.7.1

The Configuring GFast or VDSL35b Super Vectoring feature describes GFast, which is a Digital Subscriber Line (DSL) protocol standard in the high-end SKUs of ISR Cisco 1100 Series Integrated Services Routers (ISRs) with a performance boost target upto 1Gbit/sec for short distances.

The GFast feature is supported on the following platforms:

  • Cisco ISR C1113

  • Cisco ISR C1114

The following commands were introduced or modified by this feature: controller vdsl slot subslot port .

Restrictions for Configuring GFast or VDSL 35b Super Vectoring

  • GFast is supported only on the high-end SKUs of Cisco 1100 Series Integrated Services Routers (ISRs).

Information Abbout GFast or VDSL35b Super Vectoring

Configuring G.Fast or VDSL35b Super Vectoring

In G.Fast, G is ITU-T G series of recommendations, is G.Fast-PHY is the G.Fast physical layer specification.

G.Fast uses time-division duplexing (TDD), as opposed to ADSL2 and VDSL2, which uses frequency-division duplexing.

  • Gbps over copper wiring

  • 106MHz of bandwidth

  • Vectoring standard

  • 250 meters or closer through the distribution point

  • Reverse powered

G.Fast has several benefits, a :

Significantly lower cost versus FTTH

Customer self-install

Faster roll-out (no customer visit coordination)

Flexible use cases (wireless & business applications)

Flexible asymmetry ratio (up:down ratio)

Coexistent with legacy xDSL

More robust with finer level quality over copper

Better power management

Optimized performance with vectoring

Path to double performance

The following DSL firmware features are supported on the ISR1100 Series Integrated Services Routers:

  • G.Fast Basic Standards

    106a profile is supported on all the SKUs supporting G.Fast.

    G.Fast or VDSL 35b Super Vectoring are supported on both POTS and ISDN, however, through different SKUs.

    Firmware sub-package upgrade or downgrade.

    Seamless Rate Adaptation (SRA)

    G.Fast improves impulse noise protection.

    DSL Line Train Logging

    Vectoring, G.993.5 (G.Vector)

    Bit Swap

    Auto-sensing support

    G.Fast SKUs fall back VDSL2 or ADSL profiles if the line cannot train to G.Fast (hardware supports this). Profile 35b is disabled in software on these G.Fast SKUs.

  • G.Fast combo PHY:

    If Direct Call Pickup With Barge-In (DPU) supports G.Fast, VDSL or ADSL, the SKU trains the corresponding profile through G.Fast-PHY, which is G.Fast physical layer specification.

  • G.Fast US/DS ratio and the Start Frequency Range:

    Parameters, such as the ratio of G.Fast US and DS (US/DS) are pushed down from the Direct Call Pickup With Barge-In (DPU) to the Customer Premise Equipment (CPE), the CPE supports both the ratio-US/DS and starting of the frequency range.


Note

There is no specific command to implement this on the Cisco 1100 Series Integrated Services Routers (ISRs).

Configuring GFast or VDSL35b Super Vectoring

Configuring G.Fast or VDSL 35b Super Vectoring

Device# configure terminal
controller VDSL slot/subslot/port
operating mode auto
end
Before You Begin

Configure the modem in the auto mode for the modem to work with G.Fast or VDSL 35b super vectoring.

Example: GFast or VDSL35b Super Vectoring

Example: GFast or VDSL 35b Super Vectoring

Example: GFast or VDSL35b Super Vectoring

Router#show controllers vdsL 0/3/0
Controller VDSL 0/3/0 is UP
Daemon Status:          UP
                        XTU-R (DS)              XTU-C (US)
Chip Vendor ID:         'BDCM'                   'BDCM'
Chip Vendor Specific:   0x0000                   0xC00E
Chip Vendor Country:    0xB500                   0xB500
Modem Vendor ID:        'CSCO'                   'BDCM'
Modem Vendor Specific:  0x4602                   0x0000
Modem Vendor Country:   0xB500                   0xB500
Serial Number Near:     FGL213191DQ C1113-8P 16.8.20171
Serial Number Far:      eq nr port:00  oemid softwarere
Modem Version Near:     16.8.20171023:08025
Modem Version Far:      0xc00e

Modem Status:           TC Sync (Showtime!)
DSL Config Mode:        AUTO
Trained Mode:           G.9701 (GFAST) Profile 106b

TC Mode:                PTM
Selftest Result:        0x00
DELT configuration:     disabled
DELT state:             not running

Failed full inits:      0
Short inits:            0
Failed short inits:     0

Modem FW  Version:      4.16L.05
Modem PHY Version:      A2pvfbH043j.d26r

Line 0:

                        XTU-R (DS)              XTU-C (US)
Trellis:                 ON                      ON
SRA:                     enabled                 enabled
SRA count:               1                       5
Bit swap:                enabled                 enabled
Bit swap count:          0                       0
Line Attenuation:         0.0 dB                  0.0 dB
Signal Attenuation:       0.0 dB                  0.0 dB
Noise Margin:             6.4 dB                 8.9 dB
Attainable Rate:        833400 kbits/s           215007 kbits/s
Actual Power:            0.0 dBm                 4.1 dBm
RTX uc :                 0                       0
RTX tx :                 15                      26
BSW Completed :          1                       4
SRA Completed :          0                       2
FRA Completed :          0                       0
RPA Completed :          0                       0
TIGA Completed :         0                       0
Attainable Exp Thru:     833400                  214167
Error Free Thru :        805596                  202930
Total FECC:             351                      170
Total ES:               0                        0
Total SES:              0                        0
Total LOSS:             0                        0
Total UAS:              80545                    80545
Total LPRS:             0                        0
Total LOFS:             0                        0
Total LOLS:             0                        0

                  DS Channel1     DS Channel0   US Channel1       US Channel0
Speed (kbps):             NA          805677            NA            202951
SRA Previous Speed:       NA          805687            NA            202920
Previous Speed:           NA          805677            NA            202920
Reed-Solomon EC:          NA             351            NA               170
CRC Errors:               NA               0            NA                 0
Header Errors:            NA               0            NA                 0
Interleave (ms):          NA         2810.82            NA              0.00
Actual INP:               NA            1.47            NA              0.00

Training Log :  Stopped
Training Log Filename : flash:vdsllog.bin

Additional References for GFast or VDSL35b Super Vectoring

Related Documents

Related Topic

Document Title

Cisco IOS commands

Cisco IOS Master Commands List, All Releases

MIBs

MIB

MIBs Link

  • CISCO-MIB

To locate and download MIBs for selected platforms, Cisco IOS releases, and feature sets, use the URL here:Cisco MIB Locator.

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