Cisco Systems 20 MB flash on 1600R ?

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Subject Author Date
20 MB flash on 1600R ? JayDubb 07-10-06
Posted by JayDubb on July 10, 2006, 7:24 pm
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An updated IOS image sent to replace one subject to the IOS Heap
overflow vulnerability arrived at 16,855,588 bytes.  TAC rep said the
min requirements are 10MB dram, 16MB flash.  Problem- the flash card
is around 16,500,000 bytes, about 300k short of holding the image.

I have a 20 MB flash card, but it appears the 1600 won't see anything
above 16 MB.  

Is there a way to make the 1600 recognize the full 20 MB of the flash
card?  (In case it matters, router has 8MB base mem + 16 MB dimm).

TIA for any help.


Posted by www.BradReese.Com on July 10, 2006, 8:20 pm
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Hi Jay,

1600-R series router images run from RAM.

The run from RAM images are compressed and have -mz in the filename.
Because the run from RAM image is stored in Flash in a compressed
state, and decompresses into RAM at bootup, less Flash and more RAM is
required.

Verify whether the image is a run from a Flash image ( with a -l in the
filename ), or a run from the RAM image ( with a -mz in the filename ).

When downloading images from Cisco Downloads:

http://www.cisco.com/tacpage/sw-center/

The run from RAM images are listed under 1601R-1605R.

Sincerely,

Brad Reese
BradReese.Com - Cisco Repair
http://www.bradreese.com/cisco-big-iron-repair.htm
1293 Hendersonville Road, Suite 17
Asheville, North Carolina  USA 28803
USA & Canada:  877-549-2680
International: 828-277-7272
Fax: 775-254-3558
AIM: R2MGrant
Website: http://www.bradreese.com/contact-us.htm


Posted by JayDubb on July 14, 2006, 9:33 pm
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Do you know why the router only recognizes 16 MB of a 20 MB flash
card?  It is a completely unpartitioned flash card that other devices
see as 20 MB available, but the 1600R only sees the first 16 MB.

Are the 1600R's limited in how much flash they can recognize?




On 10 Jul 2006 17:20:11 -0700, "www.BradReese.Com"



Posted by www.BradReese.Com on July 15, 2006, 12:30 pm
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Jay,

You may wish to investigate:

PCMCIA Flash on the Cisco 1600 Series Router is implemented using one
slot for Fast PC cards ( up to 16MB ).

http://www.cisco.com/en/US/products/hw/routers/ps214/products_tech_note09186a0080094eb4.shtml#con2

Filesystem Class "B"

http://www.cisco.com/en/US/products/hw/routers/ps341/products_tech_note09186a00800a7515.shtml#table2

Class B Filesystem

http://www.cisco.com/en/US/products/hw/routers/ps341/products_tech_note09186a00800a7515.shtml#classb

Cisco 1600 Series Router Architecture

http://www.cisco.com/en/US/products/hw/routers/ps214/products_tech_note09186a0080094eb4.shtml

Hardware Troubleshooting for Cisco 1600 Routers

http://www.cisco.com/en/US/products/hw/routers/ps214/products_tech_note09186a0080094918.shtml

Sincerely,

Brad Reese
BradReese.Com - Cisco Technical Forums
http://www.bradreese.com/cisco-technical-newsgroups.htm
1293 Hendersonville Road, Suite 17
Asheville, North Carolina  USA 28803
USA & Canada:  877-549-2680
International: 828-277-7272
Fax: 775-254-3558
AIM: R2MGrant
Global Cisco Systems Pre-Sales Support
http://www.bradreese.com/contact-us.htm#GLOBAL


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