Friday, September 23, 2011

Modify BAUD speed on Cisco Switch and Router

I have a rack of switches and routers that I connect through from a terminal server. I noticed how slow and laggy the switches and routers would be after entering a command. The current baud speed is set at 9600. I wanted to change this to 115200.

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SET BAUD/CONSOLE SPEED TO 115200 ON CISCO 2600 ROUTERS
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http://www.cisco.com/en/US/products/hw/routers/ps133/products_tech_note09186a008022493f.shtml
Router> ena
Router# conf t
Router(config)# config-register 0x3922
Router(config)# end
Router# reload
Put "n"  you dont need to save configuration

Immediatly press CRTL + Break keys

It should put you in Rommon mode
rommon 1 > confreg 0x3922
rommon 1 > reset
Router or switch should reboot, thats it.

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SET BAUD/CONSOLE SPEED TO 115200 ON CISCO 3750 SWITCHES
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http://www.cisco.com/en/US/products/hw/switches/ps628/products_tech_note09186a0080169696.shtml

Hold MODE button down while powering on
SWITCH: set BAUD 115200
Unplug switch and plug power back in

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FIX UP  TELNET SPEED TO 115200 ON CISCO 2600 TERMINAL SERVER
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Router> ena
Router# conf t
Router(config)# line 33 64
Router(config-line)# speed 115200


3 comments:

  1. Somewhere the content of the blog surrounded by little arguments. Yes it is healthy for readers. They can include this kind of language in their writing skill as well as while group discussion in college.Cisco SG200

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  2. You should note for the 3750 series this only works if you have a broken/corrupt/missing IOS. using the steps provided in the cisco document only allows chaning of BAUD on a switch without a working IOS.

    ReplyDelete