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router resets line configs

dehghan
Level 1
Level 1

HI

I have found that on a 3662 with 3 NM-16 modem banks that at random the router resets the line config ( I think ) to its default values and they are shown in the running config. This happens to three of the modem banks the other one does not have a problem.

This often makes users disconnect after the change has happend.

I have copied the running before and after the change :

before=

line 129 144

exec-timeout 0 0

no flush-at-activation

modem InOut

modem autoconfigure type microcom_mimic

terminal-type vt100

transport input all

autoselect during-login

autoselect ppp

flowcontrol hardware

line 161 176

exec-timeout 0 0

no flush-at-activation

modem InOut

modem autoconfigure type microcom_mimic

terminal-type vt100

transport input all

autoselect during-login

autoselect ppp

flowcontrol hardware

After=

line 129 144

exec-timeout 0 0

timeout login response 0

no flush-at-activation

modem InOut

modem autoconfigure type microcom_mimic

terminal-type vt100

data-character-bits 8

exec-character-bits 8

special-character-bits 8

length 0

width 0

no history

no editing

transport preferred none

transport input all

escape-character soft 0

escape-character 0

no ip tcp input-coalesce-threshold

autoselect during-login

autoselect ppp

hold-character 0

lat out-group all disabled

flowcontrol hardware

line 161 176

exec-timeout 0 0

no flush-at-activation

modem InOut

modem autoconfigure type microcom_mimic

terminal-type vt100

transport input all

autoselect during-login

autoselect ppp

flowcontrol hardware

I would be glad if someone could give me clue as to what could be happening.

Thanks alot.

1 Reply 1

pradeepde
Level 5
Level 5

I suspect some hardware problem with the NM cards. May be you can try plugging out and then reseating the NM cards.

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