how to access via CLI to a switch?

wolffnx

wolffnx

I read everywhere,including posts in here

the switch is a cisco sg350-28 and the adaptor is a serial to usb

when I use minicom appears the legeng "cannot open /dev/cuaU0!" , but if a restart the switch I see the boot in the screen

when I use screen /dev/ttyU0 115200 , this takes me to a "menu" and when press enter takes me to "[screen is terminating]"

In the past posts I newer see a solution,anybody? help!
 
wolffnx said:
but if a restart the switch I see the boot in the screen
Click to expand...

This (and the "menu") sounds like you are able to read / write bytes but then it is dropping.
Could that be a baud issue?

Perhaps try changing the baud rate. I.e for screen:
Code: 
screen /dev/ttyU0 115200

It seems like that device (or a similar model) can take a number of different baudrates:
https://community.cisco.com/t5/smal...ole-settings/m-p/2240250/highlight/true#M9108

Slightly further down in that thread someone suggested using 15200 baud and no flow control solved their issue.

so, something like:

Code: 
screen /dev/ttyU0 15200,-ixon
 
kpedersen said:
This (and the "menu") sounds like you are able to read / write bytes but then it is dropping.
Could that be a baud issue?

Perhaps try changing the baud rate. I.e for screen:
[code
screen /dev/ttyU0 115200
[/code]

It seems like that device (or a similar model) can take a number of different baudrates:
https://community.cisco.com/t5/smal...ole-settings/m-p/2240250/highlight/true#M9108

Slightly further down in that thread someone suggested using 15200 baud and no flow control solved their issue.

so, something like:

Code: 
screen /dev/ttyU0 15200,-ixon
Click to expand...

thanks,I will try it
 
Usually you want to make shure you have 8-N-0 or 8-N-1. Consult the switches manual and/or search Cisco related websites & forums
 
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