memory confusion 1

[snootalope]

hi there.. I'm a little confused on minimum memory requirements and what I have now..

I have a 1751 and my current memory is:

Cisco 1751 (MPC890P) processor (revision 0x200) with 55706k/9830k bytes of memeory

BUT! My current image is:

c1700-sv8y-mz. 12.2-8.T that says the minimums are 48/16 mb of ram.. wouldn't the 16 be greater than my 9830k?

My Goal: upgrade to c1700-sv8y-mz 12.2-13.T3 and it's minimums are 64/16 mb of ram I'd like to upgrade that to take advatage of the Security Device Manager gui software..

So is this upgrade going to work or not?? Or am I going to have to change something on the router?

Thanks for any advice!!
snooter

"tis better to remain silent and be thought of as a fool..
then open your mouth and remove all doubt" Mark Twain

"I should of been a doctor.." Me

 

[eurobadger]

Hi

The IOS c1700-sv8y-mz 12.2-13.T3 requires 64MB of RAM and 16 MB Flash.

The flash requirement is because of the size of the IOS file itself. If it is bigger than 8 MB, then the smallest flash configuration you can have that will hold it is 16MB. That does mean it will not be full, of course....
Check the size of flash memory in your router with 'Show flash'.

The memory required to run that IOS is because of considerations of the size of increments in which it can be installed (just like the flash) is 64 MB.
When you do a 'show ver' amount of RAM is displayed and the total is the sum of the two numbers. So in yours you have 55706+9830=64MB, or there abouts.

Hope that helps
EB

 

[tschouten]

eurobadger is once again dead on the money!

 

[snootalope]

Thank you very much!!

My cmd:Show Flash:

System flash directory:
File Length Name/status
1 8644404 c1700-sv8y-mz.122-8.T.bin
2 1451520 qdm.tar [deleted]
3 1451520 qdm.tar
[11547636 bytes used, 22006796 available, 33554432 total]
32768k bytes of processor board System flash (Read/Write)
________________________________________

So the answer to my question is, Yes, I can upgrade to that new image??

If so, is it just like doing a PIX upgrade? I use the TFTP server and copy the new image and away we go? I'm so scared that I'm going to lose some configuration settings cause we're using VoIP and I would be in for a seriously long night if that got corupted.. 8-
snooter


"tis better to remain silent and be thought of as a fool..
then open your mouth and remove all doubt" Mark Twain

"I should of been a doctor.." Me

 

[eurobadger]

Hi

The config resides in NVRAM, not flash, so it should be safe. Because I am paranoid I would save the current IOS and config to a tftp server. 3Com have a free one available.

Save the config useing the privilege mode command 'copy running-config tftp'. The routine will ask for the IP address of the tftp server, and a file name to use...dead easy. The usual gotcha (for me anyway) is that I forget to start up the tftp server before doing the transfer.

Likewise save the IOS to the tftp server with 'copy flash tftp'. Again it will ask for the server's address and a file name. The best tip I have here is to copy & paste the filename from the output of your show flash, so you don't mistype an I for a 1 a - for a _ or something like that.
You cansave that .tar file in the same way if you feel you need to.


Use 'copy tftp flash' to get the new IOS on to the flash in your router. If there is not enough space in the flash for the new IOS alongside the existing files the copy routine will erase existing files before copying in the new one.
Even if there is a problem with the transfer your router will keep running, as the new IOS does not become active until you reload or power cycle it.

EB

 

[snootalope]

so after loading the new image, I then load the security device manager in the same manner correct? I downloaded and extracted it.. I see a sdmconfig-1751-1760.cfg file that needs to be on there.. Thanks for help, I really appreciate it!!!

"tis better to remain silent and be thought of as a fool..
then open your mouth and remove all doubt" Mark Twain

"I should of been a doctor.." Me