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by 4mam

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can any one help me to solve this problem?

i have a 3640 cisco router,when i configure nrzi-encoding (under interface mode),it canot be saved
meaning that if for any reason i forced to restart the router the nrzi-encoding was gone and i must reconfigure it again .
although after each time i configure that command
i write the command "write memory" (under privilage mode).
one time i wrote "copy running-config startup-config" but nothing changed.

can anyone help me to make the commandnrzi-encoding saved in nvram ?

thanks for every body

1 reply

by shayad

This command first appeared in Cisco IOS Release 10.0.

This command was modified in Cisco IOS Release 11.3 to include the mark keyword.
All serial interfaces support both nonreturn to zero (NRZ) and nonreturn to zero inverted (NRZI) formats. NRZis the default; NRZI is commonly used with EIA/TIA-232 connections in IBM environments. To enable NRZI encoding on an interface, enter the nrzi-encoding command:
Router(config-if)# nrzi-encoding

To disable NRZI encoding on a port, enter the nonrzi-encoding command.
This is a line-coding format that is required for serial connections in some environments.

Examples
The following example configures serial interface 1 for NRZI encoding:

interface serial 1
nrzi-encoding

To write your changes to NVRAM, making them permanent, enter the command copy running-config startup-config at the enable prompt:

Router# copy running-config startup-config

Building configuration. . .

[OK]

Router#

The router is now configured to boot in the new configuration.

Can u tell me if other commands are getting configured properly or no?
If not then some problem in ur NVRAM only.

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