From: Sullivan, Mark (Mark.J.Sullivan@xxxxxxxxxxxxx)
Date: Mon Jul 10 2000 - 21:20:00 GMT-3
John
cisco 2500 (68030) processor (revision A) with 16384K/2048K bytes of
memory.
The figures 16384/2048 in the above line refer to MAIN DRAM/SHARED DRAM.
MAIN DRAM is used for storing routing tables and the like, and SHARED DRAM
is used mostly for the interface buffers. On 2500 revisions A through N the
SHARED DRAM is soldered to the board. So in this case you have a 16MB DRAM
simm and 2MB Shared DRAM which is on the board. The later revisions (after N
I think) logically carve SHARED memory from the MAIN DRAM (ie there is no
onboard SHARED DRAM).
16384K bytes of processor board System flash (Read ONLY)
This line refers to flash. You have 16MB flash. This flash device is
considered READ ONLY because you are running the IOS from FLASH.
Best regards
Mark
-----Original Message-----
From: John Conzone [mailto:jkconzone@home.com]
Sent: Tuesday, July 11, 2000 10:01 AM
To: ccielab
Subject: memory confusion (2500 router)
I need some help with understanding 2500 memory. Here's a show ver from
a 2500:
cisco 2500 (68030) processor (revision A) with 16384K/2048K bytes of
memory.
Processor board ID 01101479, with hardware revision 00000000
Bridging software.
SuperLAT software copyright 1990 by Meridian Technology Corp).
X.25 software, Version 2.0, NET2, BFE and GOSIP compliant.
TN3270 Emulation software.
Basic Rate ISDN software, Version 1.0.
Cisco-ET Extended Temperature platform.
1 Ethernet/IEEE 802.3 interface(s)
2 Serial network interface(s)
1 ISDN Basic Rate interface(s)
32K bytes of non-volatile configuration memory.
16384K bytes of processor board System flash (Read ONLY)
Okay, this means I have 16 M of flash and 2M of DRAM, correct? Total of
18M. Is the 16 M of flash reflected on the last line? Is this memory on
simms that can be changed? Okay, here's another Sho Ver from another
2500(actually a CPA 2513):
cisco 2500 (68030) processor (revision D) with 2048K/2048K bytes of memory.
Processor board ID 02386057, with hardware revision 00000000
Bridging software.
SuperLAT software copyright 1990 by Meridian Technology Corp).
X.25 software, Version 2.0, NET2, BFE and GOSIP compliant.
TN3270 Emulation software (copyright 1994 by TGV Inc).
1 Ethernet/IEEE 802.3 interface.
1 Token Ring/IEEE 802.5 interface.
2 Serial network interfaces.
32K bytes of non-volatile configuration memory.
16384K bytes of processor board System flash (Read ONLY)
This one says 2048/2048, which means a total of 4M, right? Which is Flash
and which is DRAM? Why do I still have the "16384K bytes of processor board
System flash (Read ONLY)" on the last line. I thought that was my flash? I'm
buying some 2500's and want to make sure I get the right memory upgrades and
know how to install them.
Thanks!
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