
Troubleshooting Routers
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308656-14.00 Rev 00
To view the status of a flash memory card, display its directory. The directory
display shows the amount of available free space and how much of the free space
is contiguous.
In the directory display, the
available free space or free space column is the
total number of bytes of unused space and bytes of space used by deleted files.
The
contiguous free space column is the number of bytes of unused space.
In order for the flash memory card to accommodate a file, the file’s size must be
less than or equal to the contiguous free space.
If the file you want to store is less than the available free space, but more than the
contiguous free space, compact the existing files first. When you finish
compacting files on a flash memory card, the contiguous free space matches the
available free space.
Thus, if the directory display shows that the flash memory card has 1000 bytes of
available free space and 1000 bytes of contiguous free space, all of its free space is
available for storing files. If you store a file that is 100 bytes, you have 900 bytes
of available free space and 900 bytes of contiguous free space. If you delete the
file and display the directory, the display shows 1000 bytes of available free space,
but only 900 bytes of contiguous free space. The 100-byte file remains on the flash
memory card, even though you deleted it. Thus, only 900 bytes remain for storing
additional files until you compact the existing files.
Memory or Buffer Problem
The router may have a memory or buffer problem if the log shows an
out of resources or memalloc (memory allocation) error.
The router separates memory into two types:
• The router reserves global memory for all buffers.
These buffers store all incoming and outgoing traffic.
• The router reserves local memory for the router software image, the routing
tables, and the forwarding tables.
The router software image includes both the operating system and executable
software modules.
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