Can I upgrade memory on WS-C3750G-24TS-S and WS-C3560-24TS-S switches?

[rweir0001]

I have WS-C3750G-24TS-S and WS-C3560-24TS-S switches running IOS versions c3750-ipservices-mz.122-37.SE1.bin and c3560-ipbase-mz.122-25.SEB4.bin, respectively. I wanted to upgrade the IOS versions to c3750-ipservicesk9-mz.122-55.SE10.bin and c3560-ipservicesk9-mz.122-55.SE10.bin so that I can generate crypto keys. Both of these ipservicesk9 licenses are roughly around 12 MB in size , and as far as my WS-C3750G-24TS-S is concerned, I don't have enough memory in flash for the upgrade. My WS-C3560-24TS-S does have enough memory for the upgrade, but will leave only 13 MB free in flash. There isn't very much that I can delete from the flash of either device, although my WS-C3750G-24TS-S has a file called c3750-dmon-mz-122-25r.SEC, which I don't really know what it does other than it may be for "Stardust"...whatever that is.

I've tried researching whether I can upgrade the memory for these switches so that I can do the IOS upgrades, but it appears that I cannot do DRAM memory upgrades for WS-C3750G-24TS-S switches. I am unclear if that holds true for WS-C3560-24TS-S switches as well. Is there anyone who knows whether I can do memory upgrades for these switches? If not, then is my only option to upgrade to new switches if I want to be able to run an IOS where I can generate crypto keys?

Here is the "sho vers" output from both switches:

CORE#sho vers
Cisco IOS Software, C3750 Software (C3750-IPSERVICES-M), Version 12.2(37)SE1, RELEASE SOFTWARE (fc1)
Copyright (c) 1986-2007 by Cisco Systems, Inc.
Compiled Thu 05-Jul-07 18:32 by antonino
Image text-base: 0x00003000, data-base: 0x01300000

ROM: Bootstrap program is C3750 boot loader
BOOTLDR: C3750 Boot Loader (C3750-HBOOT-M) Version 12.2(44)SE5, RELEASE SOFTWARE (fc1)

CORE uptime is 41 weeks, 6 days, 23 hours, 5 minutes
System returned to ROM by power-on
System image file is "flash:/c3750-ipservices-mz.122-37.SE1/c3750-ipservices-mz.122-37.SE1.bin"

cisco WS-C3750G-24TS (PowerPC405) processor (revision F0) with 118784K/12280K bytes of memory.
Processor board ID CAT0832X00C
Last reset from power-on
5 Virtual Ethernet interfaces
56 Gigabit Ethernet interfaces
The password-recovery mechanism is enabled.

512K bytes of flash-simulated non-volatile configuration memory.
Base ethernet MAC Address : 00:11:BB:33:71:00
Motherboard assembly number : 73-7058-15
Power supply part number : 341-0045-02
Motherboard serial number : CAT08310A2E
Power supply serial number : LIT15110PWG
Model revision number : F0
Motherboard revision number : A0
Model number : WS-C3750G-24TS-S
System serial number : CAT0832X00C
Top Assembly Part Number : 800-21894-08
Top Assembly Revision Number : B0
Version ID : V08
CLEI Code Number : COMUH10ARA
Hardware Board Revision Number : 0x09

Switch Ports Model SW Version SW Image
------ ----- ----- ---------- ----------
1 28 WS-C3750G-24TS 12.2(37)SE1 C3750-IPSERVICES-M
* 2 28 WS-C3750G-24TS 12.2(37)SE1 C3750-IPSERVICES-M

Switch 01
---------
Switch Uptime : 41 weeks, 6 days, 23 hours, 6 minutes
Base ethernet MAC Address : 00:24:51:36:7F:80
Motherboard assembly number : 73-7058-15
Power supply part number : 341-0045-02
Motherboard serial number : FDO12510HLG
Power supply serial number : LIT12500C49
Model revision number : R0
Motherboard revision number : A0
Model number : WS-C3750G-24TS-S
System serial number : FDO1251Y2F1
Top assembly part number : 800-21894-08
Top assembly revision number : B0
Version ID : V08
CLEI Code Number : COMUH10ARA

Configuration register is 0xF

---------------------------------------------------------------------------------------------------------------------------------

Core2#sho vers
Cisco IOS Software, C3560 Software (C3560-IPBASE-M), Version 12.2(25)SEB4, RELEASE SOFTWARE (fc1)
Copyright (c) 1986-2005 by Cisco Systems, Inc.
Compiled Tue 30-Aug-05 14:19 by yenanh

ROM: Bootstrap program is C3560 boot loader
BOOTLDR: C3560 Boot Loader (C3560-HBOOT-M) Version 12.2(25r)SEC, RELEASE SOFTWARE (fc4)

Core2 uptime is 4 weeks, 3 days, 15 hours, 15 minutes
System returned to ROM by power-on
System image file is "flash:c3560-ipbase-mz.122-25.SEB4/c3560-ipbase-mz.122-25.SEB4.bin"

cisco WS-C3560-24TS (PowerPC405) processor (revision D0) with 118784K/12280K bytes of memory.
Processor board ID CAT1009Z53F
Last reset from power-on
2 Virtual Ethernet interfaces
24 FastEthernet interfaces
2 Gigabit Ethernet interfaces
The password-recovery mechanism is enabled.

512K bytes of flash-simulated non-volatile configuration memory.
Base ethernet MAC Address : 00:17:5A:0F:39:00
Motherboard assembly number : 73-9897-06
Power supply part number : 341-0097-02
Motherboard serial number : CAT10090F3U
Power supply serial number : DCA10070ADB
Model revision number : D0
Motherboard revision number : A0
Model number : WS-C3560-24TS-S
System serial number : CAT1009Z53F
Top Assembly Part Number : 800-26160-02
Top Assembly Revision Number : C0
Version ID : V02
CLEI Code Number : COMMG00ARB
Hardware Board Revision Number : 0x01

Switch Ports Model SW Version SW Image
------ ----- ----- ---------- ----------
* 1 26 WS-C3560-24TS 12.2(25)SEB4 C3560-IPBASE-M

Configuration register is 0xF

[Iulian Vaideanu · Accepted solution]

As far as I know neither RAM nor flash are upgradeable on Cat3K series (C3550/3560*/3750*...). 122-55.SE10, however, is available for all of them - it's just that, if the flash is just 16MB in size, the upgrade implies deleting the old IOS.  Also, the ability to generate crypto keys only requires that "k9" - it doesn't necessarily have to be ipservicesk9, it can be ipbasek9 as well (which is not significantly smaller, so it still cannot coexist with the old IOS on 16MB flash models).

[rweir0001]

Thanks!

[Joseph W. Doherty]

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Posting

I agree with Iulian, don't believe the device supports flash or RAM upgrades.

Not 100% positive, but the .SEC file might be a boot flash upgrade image.

Early original model 3560s/3750s only had 16 MB flash, which often makes it impossible to have two IOS images in flash.  You can delete the existing image to free enough space to load another image.

Later boot flash images supported booting from a USB stick too.  Although often the device wouldn't recognize non-Cisco USB sticks and/or wouldn't recognized sticks with more than (?) 256 MB.

The device might also support booting an image from tftp.

[rweir0001]

Thanks!