I will need to upgrade the Cisco IOS on the above-mentioned Cisco
router 3640 so that I can use it as a VPN gateway for a project. I
already obtained the instructions involved from Cisco's website site.
However, when I change the configuration register from 0x2102 to
0x2101 and reboot the router, the router does not go into RxBoot Mode.
ie.router(boot)>.
I have a Cisco router 2503 at home which uses the same Cisco IOS
upgrade instructions as the Cisco router 3620 and when it is put into
RxBoot mode, it displays this prompt i.e.router(boot)> were 'router'
is the name of the router after changing the configuration register to
0x2101 and rebooting the router. The Cisco instructions also states
that you cannot upgrade the Cisco IOS on the router in priviledged
mode i.e.router#.
Any answers will be greatly appreciated.

Thanks,
Benchmark.

1. post the output of the command "dir all"

2. post the output of "show version"

On Jul 28, 8:40 am, Merv <merv.hr...@rogers.com> wrote:
Hi Merv,
Here is "dir all"

Router1#dir all
Directory of nvram:/

28 -rw- 725 <no date> startup-config
29 ---- 5 <no date> private-config

30712 bytes total (29930 bytes free)
Directory of system:/

12 drwx 0 <no date> its
2 dr-x 0 <no date> memory
1 -rw- 725 <no date> running-config
11 dr-x 0 <no date> vfiles

No space information available
Directory of flash:/

1 -rw- 15075216 <no date> c3620-is-mz.
122-15.T5.bin

16252928 bytes total (1177648 bytes free)

Also here is sh ver

Router1#sh ver
Cisco Internetwork Operating System
Software
IOS (tm) 3600 Software (C3620-IS-M), Version 12.2(15)T5, RELEASE
SOFTWARE
(fc1)

TAC Support: http://www.cisco.com/tac
Copyright (c) 1986-2003 by cisco Systems, Inc.
Compiled Thu 12-Jun-03 03:15 by eaarmas
Image text-base: 0x60008950, data-base: 0x61834000

ROM: System Bootstrap, Version 11.1(17)AA, EARLY DEPLOYMENT RELEASE
SOFTWARE (fc
2)

Router1 uptime is 2 minutes
System returned to ROM by power-on
System image file is "flash:c3620-is-mz.122-15.T5.bin"

cisco 3620 (R4700) processor (revision 0x81) with 61440K/4096K bytes
of memory.
Processor board ID 07655183
R4700 CPU at 80Mhz, Implementation 33, Rev 1.0
Bridging software.
X.25 software, Version 3.0.0.
1 Ethernet/IEEE 802.3 interface(s)
DRAM configuration is 32 bits wide with parity disabled.
29K bytes of non-volatile configuration memory.
16384K bytes of processor board System flash (Read/Write)

Configuration register is 0x2102

Thanks in advance,
Benchmark.

I can see from the dir all that you do not have any PCMCIA flash cards
in slot0 or slot1.

I would HIGHLY recommend you get one; even better two.

Otherwise you will need to delete the image that is in flash: in order
to install new image as the flash memory is 16MB and your current
image is just under that.

I am not a big fan of having to delete the production image from a
router.

One of the things you should do is to make sure there is a backup copy
of the curretn image ona TFTP server !!!

BTW what is the target image name that you are trying to load ?

On Jul 28, 5:10 pm, Merv <merv.hr...@rogers.com> wrote:
Hi Merv,
Thanks for your prompt reply and suggestion. However, I do
not need any PCMCIA cards. If you look at the sh ver output, the
System Flash is System flash(Read/Write). Any router that has System
Flash(Read/Write) is a run from RAM and should be able to be updated
without changing the config register bits. I have already done this on
my Cisco router 3620 at home in my CCNP and it worked fine. However, I
found out this information in this forum after posting my message.
Thanks anyway.

Benchmark.

On Jul 28, 5:34 pm, benchmark <eo...@sympatico.ca> wrote:
Hi Merv,
In the above message, CCNP should have been CCNP lab. Sorry
for the typo.
Benchmark.

Yes I am aware that system flash is read/write; I have upgraded flash-
based images numerous times.

My personal preference is to make use of the PCMCIA capability as one
can quickly fall back to a previous prodcution image if something goes
wrong.

Be aware that installing any new image brings with it a chance of
encountering bugs ( in some case quite a high chance).

With a PCMCIA card, all one has to do is change a boot command in the
config and reload - something you might want to keep in mind...

On Jul 28, 5:54 pm, Merv <merv.hr...@rogers.com> wrote:
Hi Merv,
Thanks again for your explanation. How do I go about using
the PCMCIA cards in a Cisco 3640 router? Any information appreciated.
Thanks,
Benchmark.

install a PCMCIA card in say slot0.

copy a target IOS image to the flash image to slot0: (i.e copy tftp://<ip
address>/image-name slot0:image-name



config t
boot system flash slot0:image-name
end

wri mem

reload


to remove boot command:

config t
boot system flash slot0:image-name
end

oops

to remove boot command:

config t
no boot system flash slot0:image-name
end

On Jul 28, 6:21 pm, Merv <merv.hr...@rogers.com> wrote:
Hi Merv,
Thanks again.
Benchmark.