Memory and Flash

[kamrulsyed]

Really really stupid questions ,

1. what is the difference between RAM and Flash and Memory (in Cisco world)?
2. How much of what I have? (see config below)
3. What is the maximum flash and RAM and memory allowed for 2511 router?

Thanks a million !!!!

Router#show version
Cisco Internetwork Operating System Software
IOS (tm) 2500 Software (C2500-C-L), Version 12.2(26), RELEASE SOFTWARE (fc2)
Copyright (c) 1986-2004 by cisco Systems, Inc.
Compiled Sat 31-Jul-04 03:31 by eaarmas
Image text-base: 0x030416FC, data-base: 0x00001000
ROM: System Bootstrap, Version 11.0(10c), SOFTWARE
BOOTLDR: 3000 Bootstrap Software (IGS-BOOT-R), Version 11.0(10c), RELEASE SOFTWARE (fc1)
Router uptime is 7 minutes
System returned to ROM by reload
System image file is "flash:c2500-c-l.122-26.bin"
cisco 2511 (68030) processor (revision M) with 6144K/2048K bytes of memory.
Processor board ID 08002121, with hardware revision 00000000
Bridging software.
SuperLAT software (copyright 1990 by Meridian Technology Corp).
X.25 software, Version 3.0.0.
TN3270 Emulation software.
1 Ethernet/IEEE 802.3 interface(s)
2 Serial network interface(s)
16 terminal line(s)
32K bytes of non-volatile configuration memory.
8192K bytes of processor board System flash (Read ONLY)

[Richard Burts]

Memory is a really broad term and could reference both RAM and flash, though when used by itself memory usually refers to RAM. RAM is Random Access Memory and a couple of important things about RAM is that it is faster and that it is volatile so that when the router is reloaded or is power cycled the content of RAM is erased. flash is slower and is non volatile memory so that the content of flash are maintained through a reload or power cycle.

Your router has 64 MB of RAM and has 8 MB of flash.

HTH

Rick

[kamrulsyed]

THANKS Rick !!!

So if I wanted to max both out, how much can I add?

Thanks again!

[Leo Laohoo]

how much can I add?

How about you DON'T.

2500 routers are about >10 years old.  Parts are getting scarce and you really don't want to be caught dead playing with it.  If you want to play around routing, go look for the likes of 1800 or 2800 ISR G1.  Better performance.

[kamrulsyed]

Good idea

How about RAM though?

Leo Laohoo wrote:
how much can I add?
How about you DON'T. 
2500 routers are about >10 years old.  Parts are getting scarce and you really don't want to be caught dead playing with it.  If you want to play around routing, go look for the likes of 1800 or 2800 ISR G1.  Better performance.

[Leo Laohoo · Accepted solution]

Same thing.  I wouldn't be playing with anything older than a 2600 or 2500 router.  They are old and parts are very hard to come by (if not dodgy).

[kamrulsyed]

Thanks !!!