11 May 2012

Where is "show dsl int atm 0" on newer 887VA / EHWIC-VA-DSL?

Frequently in my career as a network engineer you need to find the true reason for why an issue is occurring. For ADSL it is important to know things like noise margins, attenuation and error counts as well as DSL sync statistics such as are you syncing at ADSL1/ADSL2/ADSL2+. With Cisco's recent refresh of equipment a few commands I relied upon with daily troubleshooting of ADSL ("show dsl interface atm 0") suddenly disappeared. I thought I'd help others who may be looking for the similar commands on the new router models.

Behold!
"show controllers vdsl 0 brief"
Example output:
RT01#show controllers vdsl 0/0/0 brief
Controller VDSL 0/0/0 is UP
Daemon Status:           Up                        XTU-R (DS)              XTU-C (US)
Chip Vendor ID:         'BDCM'                   'ALCB'
Chip Vendor Specific:   0x0000                   0x0000
Chip Vendor Country:    0xB500                   0xB500
Modem Vendor ID:        'CSCO'                   '    '
Modem Vendor Specific:  0x4602                   0x0000
Modem Vendor Country:   0xB500                   0x0000
Serial Number Near:   FOCxxxxxxx2911/K9  15.2(1)
Serial Number Far:
Modem Version Near:    15.2(1)
Modem Version Far:     0x0000
Modem Status:            TC Sync (Showtime!)
DSL Config Mode:         AUTO
Trained Mode:            G.992.1 (ADSL) 
Annex ATC Mode:                 
ATMSelftest Result:         0x00
DELT configuration:      disabled
DELT state:              not running
Trellis:                 ON                       
ONSRA:                     disabled                        disabled 
SRA count:              0                       0
Bit swap:                enabled                         enabled 
Bit swap count:         0                       0
Line Attenuation:         7.5 dB                  7.0 dB
Signal Attenuation:       7.5 dB                  0.0 dB
Noise Margin:            18.5 dB                 24.0 dB
Attainable Rate:        12132 kbits/s            1120 kbits/s
Actual Power:            15.6 dBm                 9.1 dBm
Total FECS:             0                        0
Total ES:               0                        0
Total SES:              0                        0
Total LOSS:             0                        0
Total UAS:              0                        0
Total LPRS:             0                        0
Total LOFS:             0                        0
Total LOLS:             0                        0
Full inits:             1Failed full inits:      0
Short inits:            0Failed short inits:     0
Firmware        Source          
File Name (version)--------        ------          -------------------
VDSL            embedded        
VDSL_LINUX_DEV_01212008 (1)
Modem FW  Version:      110331_1212-4.02L.03.A2pv6C032b.d23f
Modem PHY Version:      A2pv6C032b.d23f
                  
                   DS Channel1     DS Channel0   US Channel1       US Channel0Speed (kbps):
                          0             7616            0               384
SRA Previous Speed:       0                0             0                 0
Previous Speed:           0                0             0                 0
Total Cells:              0         92746827             0                 0
User Cells:               0          1160177             0                 0
Reed-Solomon EC:          0                0             0                 0
CRC Errors:               0                0             0                 0
Header Errors:            0                0             0                 0
Interleave (ms):       0.00            16.00          0.00              0.25
Actual INP:            0.00             2.00          0.00              0.00
Training Log :  StoppedTraining 
Log Filename : flash:vdsllog.bin
From this command you can see the attenuation (7.0dB/7.5dB), noise margin (18.5dB/24dB) and the actual data rate we're synced at (bottom table in the "DS Channel0" and "US Channel0" for row "Speed (kbps)" - 7.6Mbps DOWN/384Kbps UP in this case).

That's it. Hope it helps someone out there! I've been hunting for this one for a while.