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ERS 4000 series: Agent Code Checksum Failed

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TitleERS 4000 series: Agent Code Checksum Failed
Symptoms

ERS 4000 series switch gives error "Agent Code checksum Failed" during upgrade to latest version

 

Environment
  • ERS 4000
  • All supported SW releases
Cause

 Incorrect upgrade path followed during upgrade.

Resolution

To correct the issue, the unit must be power cycled and Control-C pressed from the console port after the power on self test (POST) has started to run.

>> Break Recognized - Wait...
Press 'a' to run Agent code
Press 'd' to download Agent code
Press 'e' to display errors
Press 'c' to clear log message
Press 'i' to initialize config flash
Press 'p' to run POST tests...
 

To recover a unit that fails to load the agent, select 'd' and follow the instructions on the console.
NOTE: The TFTP server must be located on the local segment.

 

Download Agent Code
Enter Port Number [ <any>]:
Enter Speed: 10, 100, 1000 [ <any>]:
Enter Local IP Address [ 0.0.0.0 ]: 10.10.10.15 (IP given to Switch)
Enter Server IP Address [ 0.0.0.0 ]: 10.10.10.1 (IP of local TFTP server
Enter Subnet Mask [ 255.255.255.0 ]:
Enter Filename: boss_1234.img


Wait..
TFTP: Sending Open: .aaaaa.a
TFTP: Open
...............................................................
.............................................................
Len= 0x20795E= 2128222. (@1200000)
Agent Version= 5.0.0.0 ModelMask= 0x1C
Program y/N [ N ]:



(Press y)

Erasing - Wait 56 sec..
Programming - Wait 96 sec..

Press 'a' to run Agent code
Press 'c' to run Cascade external loopback test
Press 'd' to Download agent code
Press 'e' to display Errors
Press 'i' to Initialize config/log flash
Press 'p' to run POST tests
Press 'r' to Receive cascade test packets
Press 's' to Send cascade test packets..
 

Select 'a' to boot the switch.
 

Starting Agent Code..
Decompressing the image ...
Target Name: vxTarget
User: target
Attaching network interface idtip0... done.
Attaching network interface lo0... done.
Completing initialization...
 

If the issue still persists, replace the switch.

Additional notes
Always check Release Notes document for validated upgrade path.

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