Troubleshooting Cisco Memory Overload:
If you see the following below, your Cisco Router / Switch memory is low or none existance.
1. syslog message: SYS-2-MALLOCFAIL: a process asks for memory, but none were available.
2. when show commands return blank outputs: There's no memory.
3. On a Console port, you plug in a console port and see "UNABLE TO CREATE EXEC" : There's no memoory or too many processes.
Check the following:
1. Is it a wrong IOS image.? Not enough memory to run the IOS.
2. Memory Leak due to bad IOS image (reload image every 1 month, etc.)
3. Worm or virus focused on the IOS. Upgrade IOS to fix.
4. BGP eating too much memory (show process memory and check the BGP process to fix).
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