ADSL connection issues

[shamax_1983]

Hi Guys,

One of our clients had a poor ADSL connection and the ISP checked on it and advised us that the ADSL is currently not on ADSL2+ ( which I could verify from the router ) and they changed the connection profile from their end.

After the change, when I do the "show controllers VDSL 0" command , it does not show me the uplink parameters ( as highlighted below)  although the site still has Internet access.

Is this a bug ? or can someone explain me what is going on here ?

Appreciate your help.

----------

NZ_R01#show controllers vdSL 0

Controller VDSL 0 is UP

Daemon Status:           Up

                        XTU-R (DS)              XTU-C (US)

Chip Vendor ID:         'BDCM'                   'IKNS'

Chip Vendor Specific:   0x0000                   0x0001

Chip Vendor Country:    0xB500                   0xB500

Modem Vendor ID:        'CSCO'                   '    '

Modem Vendor Specific:  0x4602                   0x0000

Modem Vendor Country:   0xB500                   0x0000

Serial Number Near:    FTX160883LB C887VA- 15.2(4)M

Serial Number Far:     ^A

Modem Version Near:    15.2(4)M

Modem Version Far:     0x0001

Modem Status:            TC Sync (Showtime!)

DSL Config Mode:         AUTO

Trained Mode:            G.992.5 (ADSL2+) Annex A

TC Mode:                 ATM

Selftest Result:         0x00

DELT configuration:      disabled

DELT state:              not running

Trellis:                 ON                       OFF

SRA:                     disabled                        disabled

SRA count:              0                       0

Bit swap:                enabled                         enabled

Bit swap count:         0                       0

Line Attenuation:         7.5 dB                  4.0 dB

Signal Attenuation:       9.4 dB                  3.6 dB

Noise Margin:            12.1 dB                 dB

Attainable Rate:        25564 kbits/s            0 kbits/s

Actual Power:             0.0 dBm                10.1 dBm

Total FECC:             0                        0

Total ES:               0                        1

Total SES:              0                        0

Total LOSS:             0                        0

Total UAS:              45                       45

Total LPRS:             0                        0

Total LOFS:             0                        0

Total LOLS:             0                        0

Full inits:             1

Failed full inits:      0

Short inits:            0

Failed short inits:     0

Firmware        Source          File Name (version)

--------        ------          -------------------

VDSL            embedded        VDSL_LINUX_DEV_01212008 (1)

Modem FW  Version:      120306_1254-4.02L.03.A2pv6C035j.d23j

Modem PHY Version:      A2pv6C035j.d23j

Vendor Version:         Ap6v35j.23j 68

                  DS Channel1     DS Channel0   US Channel1       US Channel0

Speed (kbps):             0            21080             0               110

SRA Previous Speed:       0                0             0                 0

Previous Speed:           0                0             0                 0

Total Cells:              0        102764074             0                 0

User Cells:               0           446678             0                 0

Reed-Solomon EC:          0                0             0                 0

CRC Errors:               0                0             0                 1

Header Errors:            0                0             0                 0

Interleave (ms):       0.00             7.92          0.00             15.00

Actual INP:            0.00             2.03          0.00              2.00

Training Log :  Stopped

Training Log Filename : flash:vdsllog.bin

-------------------

Shamal    

[johnlloyd_13]

hi,

did you try to re-train your ADSL link and got the same result? try to shut/no shut ATM.

you might also want to consider the 'Speed' parameter instead.

                  DS Channel1     DS Channel0   US Channel1       US Channel0

Speed (kbps):             0            21080             0               110

[shamax_1983]

Hi johnlloyd_13,

Sorry for the late reply, Yes I reloaded the router ( I can't shut/no Shut ATM because I'm doing everything remotely, I think reloading the router would have the same effect on the ATM interface ?? ).

The Interesting thing is that, I got one of the users in the site to do a speedtest.net test from behind the router and he is getting around 5Mbps/0.5Mbps dowb/up speeds ( but varies with time ) which doesn't make sense. 

Please have a look at the "show int dial 1" output, ATM and Dialer configs for this. Please let me know if you can see anything obvious.

Router_NZ_R01#show int di 1

Dialer1 is up, line protocol is up (spoofing)

  Hardware is Unknown

  Internet address is 125.237.xxx.xxx/32

  MTU 1500 bytes, BW 56 Kbit/sec, DLY 20000 usec,

     reliability 255/255, txload 255/255, rxload 236/255

  Encapsulation PPP, LCP Closed, loopback not set

  Keepalive set (10 sec)

  DTR is pulsed for 1 seconds on reset

  Interface is bound to Vi2

  Last input never, output never, output hang never

  Last clearing of "show interface" counters 17:00:38

  Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 0

  Queueing strategy: fifo

  Output queue: 0/40 (size/max)

  5 minute input rate 52000 bits/sec, 6 packets/sec

  5 minute output rate 0 bits/sec, 0 packets/sec

     98068 packets input, 47660493 bytes

     101384 packets output, 28163255 bytes

Bound to:

Virtual-Access2 is up, line protocol is up

  Hardware is Virtual Access interface

  MTU 1500 bytes, BW 500 Kbit/sec, DLY 20000 usec,

     reliability 255/255, txload 48/255, rxload 27/255

  Encapsulation PPP, LCP Open

  Open: IPCP

  PPPoATM vaccess, cloned from Dialer1

  Vaccess status 0x44

  Bound to ATM0 VCD: 1, VPI: 0, VCI: 100, loopback not set

  Keepalive set (10 sec)

  DTR is pulsed for 5 seconds on reset

  Interface is bound to Di1 (Encapsulation PPP)

  Last input 00:00:00, output never, output hang never

  Last clearing of "show interface" counters 16:59:17

  Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 0

  Queueing strategy: fifo

  Output queue: 0/40 (size/max)

  5 minute input rate 53000 bits/sec, 8 packets/sec

  5 minute output rate 95000 bits/sec, 13 packets/sec

     103915 packets input, 47891847 bytes, 0 no buffer

     Received 0 broadcasts (0 IP multicasts)

     0 runts, 0 giants, 0 throttles

     0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored, 0 abort

     101391 packets output, 28163372 bytes, 0 underruns

     0 output errors, 0 collisions, 0 interface resets

     0 unknown protocol drops

     0 output buffer failures, 0 output buffers swapped out

     0 carrier transitions

Router_NZ_R01#

---

Router_NZ_R01#show run int di 1

Building configuration...

Current configuration : 515 bytes

!

interface Dialer1

ip address negotiated

ip access-group in-from-world in

ip access-group out-to-world out

ip nat outside

ip inspect out-to-world out

ip virtual-reassembly in

encapsulation ppp

logging event subif-link-status

dialer pool 1

dialer-group 1

ppp authentication pap chap callin

ppp chap hostname xxxxxxxxx@xxx.co.nz

ppp chap password 7 xxxxxxxxxxxxxxxxxxxxx

ppp pap sent-username xxxxxxxxxxx@xxx.co.nz password 7 xxxxxxxxxxxxx

no cdp enable

crypto map CRY-MAP-DIALER1

end

!

interface ATM0

description ADSL Interface

no ip address

ip mask-reply

ip directed-broadcast

ip flow ingress

no atm ilmi-keepalive

pvc 0/100

  encapsulation aal5mux ppp dialer

  dialer pool-member 1

!

end

[Alessio Andreoli]

Hi there,
Configure the vdsl controller and try again after rebooting the router:

conf t
Controller vdsl 0
Operating-mode ! Here you choose the mode that better works.. Not always auto does it
End
Wr
!

however, in my opinion there are issues with the sp because the attainable rate (upstream) is 0. That is not a good value at all.
The dB are not matching amazing values either.


Hope this helps
Alessio

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