Can't dump flash via telnet interface, Arris TM902S

[mediotex]

Arris TM902S, I'm using the latest build for Linux. I can access a limited shell via telnet and ssh both use POTD, but when I tried dump flash, I got error

$ ./bcm2dump -P tm902s -vv dump '192.168.100.1,ARRIS,VAFRWXSVSG' flash dynnv dynnv.bin
bcm2dump v0.9.8-12-g7c620ca
telnet: received command 253,1
telnet: received command 253,33
telnet: received command 251,3
telnet: received command 251,1
detected interface: bfc
telnet: no login prompt

error: telnet: telnet login failed

context:
  ==> (empty)
  ==> 'Broadcom Corporation Embedded BFC Telnet Server (c) 2000-2008'
  ==> (empty)
  ==> 'WARNING:  Access allowed by authorized users only.'
  ==> (empty)
  ==> (empty)
  ==> (empty)
  ==> 'Arris console is active'
  ==> 'Command interface Copyright 2012, ARRIS Group, Inc.,'
  ==> 'All rights reserved'
  ==> (empty)
  ==> (empty)
  <== ''
  ==> 'password:'


./bcm2dump -vv dump '192.168.100.1,ARRIS,VAFRWXSVSG' flash dynnv dynnv.bin
bcm2dump v0.9.8-12-g7c620ca
telnet: received command 253,1
telnet: received command 253,33
telnet: received command 251,3
telnet: received command 251,1
detected interface: bfc
telnet: no login prompt

error: telnet: telnet login failed

context:
  ==> (empty)
  ==> 'Broadcom Corporation Embedded BFC Telnet Server (c) 2000-2008'
  ==> (empty)
  ==> 'WARNING:  Access allowed by authorized users only.'
  ==> (empty)
  ==> (empty)
  ==> (empty)
  ==> 'Arris console is active'
  ==> 'Command interface Copyright 2012, ARRIS Group, Inc.,'
  ==> 'All rights reserved'
  ==> (empty)
  ==> (empty)
  <== ''
  ==> 'password:'

The same result when use ./bcm2dump -P generic -vv dump '192.168.100.1,ARRIS,VAFRWXSVSG' flash dynnv dynnv.bin The coax cable is conneted during all tests.

When I connect telnet using terminal or putty, first I see this output

$ telnet 192.168.100.1
Trying 192.168.100.1...
Connected to 192.168.100.1.
Escape character is '^].

Broadcom Corporation Embedded BFC Telnet Server (c) 2000-2008

WARNING:  Access allowed by authorized users only.



Arris console is active
Command interface Copyright 2012, ARRIS Group, Inc.,
All rights reserved

To proceed and get password prompt I need press 'Enter'.

[jclehner]

Please retry with the latest commit!

[mediotex]

Hi, I'm back now and starting the testing. So tried the latest commit, but not works.

$ ./bcm2dump -P tm902s -vv dump '192.168.100.1,ARRIS,O9W2Q1BFZP' flash dynnv dynnv2.bin
bcm2dump v0.9.8-13-g9fbac27
telnet: received command 253,1
telnet: received command 253,33
telnet: received command 251,3
telnet: received command 251,1
detected interface: bfc
telnet: no login prompt
telnet: no password prompt

error: telnet: telnet login failed

context:
  ==> (empty)
  ==> 'Broadcom Corporation Embedded BFC Telnet Server (c) 2000-2008'
  ==> (empty)
  ==> 'WARNING:  Access allowed by authorized users only.'
  ==> (empty)
  ==> (empty)
  ==> (empty)
  ==> 'Arris console is active'
  ==> 'Command interface Copyright 2012, ARRIS Group, Inc.,'
  ==> 'All rights reserved'
  ==> (empty)
  ==> (empty)
  <== ''
  ==> 'password:'

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

$ ./bcm2dump -L dump.log -vv dump '192.168.100.1,ARRIS,O9W2Q1BFZP' flash dynnv dynnv2.bin
bcm2dump v0.9.8-13-g9fbac27
telnet: received command 253,1
telnet: received command 253,33
telnet: received command 251,3
telnet: received command 251,1
detected interface: bfc
telnet: no login prompt
telnet: no password prompt

error: telnet: telnet login failed

context:
  ==> (empty)
  ==> 'Broadcom Corporation Embedded BFC Telnet Server (c) 2000-2008'
  ==> (empty)
  ==> 'WARNING:  Access allowed by authorized users only.'
  ==> (empty)
  ==> (empty)
  ==> (empty)
  ==> 'Arris console is active'
  ==> 'Command interface Copyright 2012, ARRIS Group, Inc.,'
  ==> 'All rights reserved'
  ==> (empty)
  ==> (empty)
  <== ''
  ==> 'password:'

[mediotex]

dump.log

[jclehner]

Please recompile with the latest commit, re-run with -vv -L io.log and post both the output and the resulting io.log file.

[mediotex]

Tried new commit: the same result, telnet login failed.

$ ./bcm2dump -vv -L io.log dump '192.168.100.1,ARRIS,IRSBXWVM9K' flash dynnv dynnv2.bin
bcm2dump v0.9.8-15-g9d0dca2
telnet: received command 253,1
telnet: received command 253,33
telnet: received command 251,3
telnet: received command 251,1
detected interface: bfc
have_login_prompt=0
checking for login/password prompt
login?=0, pw?=0
checking for login/password prompt
login?=0, pw?=0
telnet: no login prompt
checking for password prompt
telnet: no password prompt

error: telnet: telnet login failed

context:
  ==> (empty)
  ==> 'Broadcom Corporation Embedded BFC Telnet Server (c) 2000-2008'
  ==> (empty)
  ==> 'WARNING:  Access allowed by authorized users only.'
  ==> (empty)
  ==> (empty)
  ==> (empty)
  ==> 'Arris console is active'
  ==> 'Command interface Copyright 2012, ARRIS Group, Inc.,'
  ==> 'All rights reserved'
  ==> (empty)
  ==> (empty)
  <== ''
  ==> 'password:'

Tried telnet with PuTTY, it works:

=~=~=~=~=~=~=~=~=~=~=~= PuTTY log 2024.05.12 23:18:28 =~=~=~=~=~=~=~=~=~=~=~=

Broadcom Corporation Embedded BFC Telnet Server (c) 2000-2008

WARNING:  Access allowed by authorized users only.



Arris console is active
Command interface Copyright 2012, ARRIS Group, Inc.,
All rights reserved


password: 
Logging event: Telnet user logged in from IP address 192.168.100.10.

CM> - No energy!
Scanning DS Channel at 241750000 Hz - No energy!

[mediotex]

io.log
io.log

[jclehner]

Try the latest commit please, and post the io.log.

[mediotex]

Otput and the io.log
io.log

$ ./bcm2dump -vv -L io.log dump '192.168.100.1,ARRIS,SZX3NZ3ZBD' flash dynnv dynnv2.bin
bcm2dump v0.9.8-16-g8d5825b
telnet: received command 253,1
telnet: received command 253,33
telnet: received command 251,3
telnet: received command 251,1
detected interface: bfc
have_login_prompt=0
checking for login/password prompt
login?=0, pw?=0
checking for login/password prompt
login?=0, pw?=0
telnet: no login prompt
checking for password prompt
telnet: no password prompt

error: telnet: telnet login failed

context:
  ==> (empty)
  ==> 'Broadcom Corporation Embedded BFC Telnet Server (c) 2000-2008'
  ==> (empty)
  ==> 'WARNING:  Access allowed by authorized users only.'
  ==> (empty)
  ==> (empty)
  ==> (empty)
  ==> 'Arris console is active'
  ==> 'Command interface Copyright 2012, ARRIS Group, Inc.,'
  ==> 'All rights reserved'
  ==> (empty)
  ==> (empty)
  <== ''
  ==> 'password:'