All numbers for table 1a/b/c are for internal DRAM/Flash only.
For external flash cards/disks, see table 5.
Column “E?” is a field that indicates if the unit supports external flash memory (See Table 5).
Memory given as ‘standard’ (Std) will always be sold as an optimal configuration - for example, a 3660 that comes with
32Mb DRAM default would be given as a single 32Mb module, instead of 2 x 16Mb.
This is always the case unless there is a severe memory component shortage.
Table 1 - SOHO/SMB Routers
Router
|
Memory |
Flash |
| Fixed |
Slots |
Std |
Max |
Fixed |
Slots |
Std |
Max |
E? |
| SB 100 |
64 |
0 |
64 |
64 |
12 |
0 |
12 |
12 |
N |
| SOHO7x |
16 |
0 |
16 |
16 |
8or12 |
0 |
8or12 |
8or12 |
N |
| SOHO9x |
64 |
0 |
64 |
64 |
8 |
0 |
8 |
8 |
N |
| 700 |
1.5 |
0 |
1.5 |
1.5 |
1 |
0 |
1 |
1 |
N |
| 801-804 |
4 |
1 |
8 |
12 |
4 |
1 |
8 |
12 |
N |
| 805 |
8 |
1 |
8 |
16 |
4 |
1 |
8 |
12 |
N |
| 806 |
16 |
1 |
32 |
32 |
0 |
1 |
8 |
16 |
N |
| 811-813 |
8 |
1 |
12 |
16 |
4 |
1 |
8 |
12 |
N |
| 827/828 |
16 |
1 |
32 |
32 |
8 |
1 |
8 |
16 |
N |
| 826/827H |
16 |
1 |
32 |
32 |
8 |
1 |
8 |
16 |
N |
| 827-4V |
16 |
1 |
48 |
48 |
8 |
1 |
12 |
16 |
N |
| 83x |
64 |
1 |
64 |
80 |
8 |
1 |
12 |
24 |
N |
| 85x |
64 |
1 |
64 |
192 |
20 |
1 |
20 |
52 |
N |
| 87x |
128 |
1 |
128 |
256 |
20 |
1 |
20 |
52 |
N |
| 1003 |
0 |
0 |
8 |
16 |
0 (External PCMCIA only) |
Y |
| 1004 |
0 |
0 |
8 |
16 |
0 (External PCMCIA only) |
Y |
| 1005 |
0 |
0 |
8 |
16 |
0 (External PCMCIA only) |
Y |
| 1400 |
8 |
1 |
16 |
24 |
0 (External PCMCIA only) |
Y |
| 16xx |
2 |
1 |
2 |
18 |
0 (External PCMCIA only) |
Y |
| 16xxR |
8 |
1 |
8 |
24 |
0 (External PCMCIA only) |
Y |
| 1701 |
64 |
1 |
64 |
128 |
32 |
0 |
32 |
32 |
N |
| 1710 |
32 |
1 |
64 |
96 |
16 |
0 |
16 |
16 |
N |
| 1711 |
64 |
1 |
96 |
128 |
32 |
0 |
32 |
32 |
N |
| 1712 |
64 |
1 |
96 |
128 |
32 |
0 |
32 |
32 |
N |
| 1720 |
16 |
1 |
32 |
48 |
0 |
1 |
8 |
16 |
N |
| 1721 |
64 |
1 |
64 |
128 |
32 |
0 |
32 |
32 |
N |
| 1750 |
16 |
1 |
16 |
48 |
0 |
1 |
4 |
16 |
N |
| 1750-xV |
16 |
1 |
32 |
48 |
0 |
1 |
8 |
16 |
N |
| 1751 |
64 |
1 |
64 |
128 |
32 |
0 |
32 |
32 |
N |
| 1751-V |
64 |
1 |
96 |
128 |
32 |
0 |
32 |
32 |
N |
| 1760 |
64 |
1 |
64 |
160 |
32 |
1 |
32 |
64 |
N |
| 1760-V |
64 |
1 |
96 |
160 |
32 |
1 |
32 |
64 |
N |
| 1801 |
128
|
1
|
128
|
384
|
0 (External CF only)
|
Y
|
| 1802 |
| 1803 |
| 1811 |
| 1812 |
| 1841 |
| IAD2400 |
64 |
0 |
64 |
64 |
8 |
0 |
8 |
8 |
N |
| 2500 |
0or2 |
1 |
4or8 |
16 |
0 |
2 |
8 |
16 |
N |
| Notes - SOHO/SMB Router Memory |
| 806/826’s shipped prior to April 2002 had less DRAM (16Mb) standard (not 32Mb as default/maximum). |
| 811/813’s shipped prior to Jan 2004 had less DRAM (8 MB) standard |
| 1721/51/60 shipped prior to August 18 2003 had 16MB flash and 32-64 MB DRAM. |
| Pre-May 2003 83x’s shipped with 8MB flash standard. March 2005 saw an increase in default DRAM to 64. |
| SOHO 71 Broadband Router has 12MB flash, all other models are 8MB |
Table 2 - Midrange/Access Routers
Router
|
System Memory |
Packet Memory |
Main Flash |
Boot Flash |
E?
|
| Slots |
Std |
Max |
Slots |
Std |
Max |
Fixed |
Slots |
Std |
Max |
Min |
Max |
| 2610 |
2
|
32
|
64
|
0
|
0
|
1
|
8
|
16
|
0
|
N
|
| 2611 |
| 2612 |
| 2613 |
| 2620 |
2
|
32
|
64
|
0
|
0
|
1
|
8
|
32
|
0
|
N
|
| 2621 |
| 2650 |
2
|
32
|
128
|
0
|
0
|
1
|
8
|
32
|
0
|
N
|
| 2651 |
| 2610XM |
2
|
128
|
256
|
0
|
16
|
1
|
32
|
48
|
0
|
N
|
| 2611XM |
| 2620XM |
| 2621XM |
| 2650XM |
2
|
256
|
256
|
0
|
16
|
1
|
32
|
48
|
0
|
N
|
| 2651XM |
| 2691 |
2 |
256 |
256 |
0 |
0 |
1 |
32 |
128 |
0 |
Y |
| 2801 |
1 |
128 |
384 |
0 |
0 External CF only |
64 |
128 |
4 |
4 |
Y |
| 2811 |
2 |
256 |
768 |
0 |
0 External CF only |
64 |
256 |
2 |
2 |
Y |
| 2821 |
2 |
256 |
1024 |
0 |
0 External CF only |
64 |
256 |
2 |
2 |
Y |
| 2851 |
2 |
256 |
1024 |
0 |
0 External CF only |
64 |
256 |
2 |
2 |
Y |
| 3620 |
4 |
32 |
64 |
0 |
0 |
2 |
16 |
32 |
0 |
Y |
| 3640 |
4 |
32 |
128 |
0 |
0 |
2 |
16 |
32 |
0 |
Y |
| 3640A |
4 |
32 |
128 |
0 |
0 |
2 |
16 |
32 |
0 |
Y |
| 3660 Ent |
2 |
32 |
256 |
0 |
0 |
2 |
16 |
64 |
0 |
Y |
| 3660 Telco |
2 |
32 |
256 |
0 |
0 |
2 |
16 |
64 |
0 |
Y |
| 3631 |
2 |
64 |
256 |
0 |
0 |
1 |
32 |
128 |
0 |
N |
| 3725 |
2 |
256 |
256 |
0 |
0 |
1 |
32 |
128 |
0 |
Y |
| 3745 |
2 |
256 |
512 |
0 |
0 |
1 |
32 |
128 |
0 |
Y |
| 3825 |
2 |
256 |
1024 |
0 |
0 External CF |
64 |
256 |
|
Y |
| 3845 |
2 |
256 |
1024 |
0 |
0 External CF |
64 |
256 |
|
Y |
| mc3810 |
1 |
32 |
64 |
0 |
0 |
1 |
16 |
32 |
0 |
N |
| mc3810 V3 |
1 |
64 |
64 |
0 |
0 |
1 |
16 |
32 |
0 |
N |
| 4000M |
1 |
8 |
32 |
1 |
4 |
16 |
0 |
2 |
4 |
16 |
0 |
N |
| 4500M |
2 |
16 |
32 |
1 |
4 |
16 |
0 |
2 |
4 |
16 |
4 |
16 |
N |
| 4700M |
2 |
16 |
64 |
1 |
4 |
16 |
0 |
2 |
4 |
16 |
8 |
N |
| AS5200 |
1 |
8 |
16 |
1 |
4 |
16 |
0 |
2 |
16 |
16 |
0 |
N |
| AS5300 |
2 |
64 |
128 |
1 |
8 |
16 |
0 |
2 |
16 |
32 |
8 |
8 |
N |
| AS5350 |
2 |
128 |
512 |
1 |
64 |
128 |
0 |
2 |
32 |
64 |
8 |
16 |
N |
| AS5400 HPX |
2 |
256 |
512 |
1 |
64 |
128 |
0 |
2 |
32 |
64 |
8 |
16 |
N |
| Notes - Midrange/Access Routers |
| 2610-21’s were first shipped with 16Mb DRAM, then 24Mb, then standardized on 32Mb before EOS. |
| 262x’s assembled prior to March, 2001 used a bootROM incompatible with the 32Mb Flash module from the 265x series and must be upgraded to the new bootrom to be able to use this module. |
| 36xx routers shipped prior to mid-May of 2002 shipped with 8Mb default flash memory. |
| On any 4x00M, all 2-slot memory must have either a single chip installed or have same-size chips installed. |
| 26xxXM’s prior to August 18, 2003 came, in most cases, with 32MB DRAM and 16 MB Flash. On June 14 2004, 261x/2x XM’s went from 96 to 128MB default, 265x and 2691/37xx went from 128 to 256MB default. |
| 26xxXM’s shipped prior to April 2004 had a maximum DRAM capacity of 128MB. This was upped to 256MB through a bootROM which can be ordered separately for older 2600XM’s, and requires 12.3(11)T IOS. |
| 3660 (Telco only) increased default memory from 32 to 128MB DRAM and 16 to 32MB Flash in Feb. 2004. |
| The 2801 has 128MB memory soldiered onto the motherboard. |
| 2801 has (1) 1.1 USB port / 2811,2821,2851, 3825, 3845 have (2) USB 1.1 ports |
Table 3 - 7xxx Series Routers
Router
|
Route Memory |
Packet Memory |
Boot Flash |
E?
|
| Slots |
Std |
Max |
Slots |
Std |
Max |
Slots |
Std |
Max |
| 70x0 RP |
4 |
16 |
64 |
0 |
1 |
4 |
4 |
Y |
| 70x0 RSP |
4 |
16 |
128 |
0 |
1 |
8 |
8 |
Y |
| 71xx |
2 |
64 |
256 |
1 |
64 |
64 |
1 |
8 |
8 |
Y |
| 72xx NPE-100 |
4 |
32 |
128 |
0 |
0 |
N |
| 72xx NPE-150 |
4 |
64 |
128 |
1 fixed |
0 |
N |
| 72xx NPE-175 |
1 |
64 |
128 |
0 |
0 |
N |
| 72xx NPE-200 |
4 |
64 |
128 |
4 fixed |
0 |
N |
| 72xx NPE-225 |
1 |
128 |
256 |
0 |
0 |
N |
| 72xx NPE-300 |
2 |
128 |
256 |
2 |
32 |
32 |
0 |
N |
| 72xx NPE-400 |
1 |
128 |
512 |
0 |
0 |
N |
72xx NPE-G1
|
2
|
256
|
1024
|
16 <= 256 |
16 fixed
|
Y
|
| 32 > 256 |
| 72xx NPE-G2 |
1 |
256 |
1024 |
0 |
64 fixed |
Y |
| 72xx NSE-1 |
1 |
128 |
256 |
0 |
0 |
N |
72xx I/O -FE
|
0
|
0 |
4
|
4
|
Y
|
| 1 |
| 72xx I/O-GE 2FE |
0 |
8 fixed |
Y |
7301
|
2
|
256
|
1024
|
16 <= 256 |
32 fixed
|
Y
|
| 32 > 256 |
| 7304 NSE-100 |
1 |
512 |
512 |
0 |
1 |
32 |
32 |
Y |
| 7304 NSE-G100 |
2 |
1024 |
1024 |
128 |
1 |
32 |
32 |
Y |
| 7401 |
1 |
128 |
512 |
0 |
8 fixed |
Y |
| 75xx RSP1 |
4 |
16 |
128 |
0 |
1 |
8 |
8 |
Y |
| 75xx RSP2 |
4 |
32 |
128 |
0 |
1 |
8 |
8 |
Y |
| 75xx RSP4 |
2 |
64 |
256 |
2 fixed |
1 |
8 |
16 |
Y |
| 75xx RSP4+ |
2 |
64 |
256 |
2 fixed |
1 |
8 |
16 |
Y |
| 75xx RSP8 |
2 |
64 |
256 |
8 fixed |
1 |
16 |
16 |
Y |
| 75xx RSP16 |
2 |
128 |
1024 |
8 fixed |
1 |
16 |
16 |
Y |
| 75xx VIP2-10 |
2 |
16 |
64 |
1 |
0.512 |
2 |
0 |
N |
| 75xx VIP2-15 |
2 |
16 |
64 |
1 |
1 |
2 |
0 |
N |
| 75xx VIP2-20 |
2 |
16 |
64 |
1 |
1 |
2 |
0 |
N |
| 75xx VIP2-40 |
2 |
32 |
64 |
1 |
2 |
2 |
0 |
N |
| 75xx VIP2-50 |
1 |
32 |
128 |
1 |
4 |
8 |
0 |
N |
| 75xx VIP4 |
1 |
64 |
256 |
1 |
64 |
64 |
0 |
N |
| 75xx VIP6 |
1 |
64 |
256 |
1 |
64 |
64 |
0 |
N |
| Notes - 7xxx Series Routers |
| NPE-100 |
must pair memory SIMM’s.
|
| NPE-150 |
| NPE-200 |
| NPE-G1 |
| 7301 |
| VIP2-10 |
| VIP2-15 |
| VIP2-20 |
| VIP2-40 |
Memory Tables - Table 4 - Core Routers
Router
|
Route Memory |
Packet Memory |
Boot Flash |
E?
|
| Slots |
Std |
Max |
Slots |
Std |
Max |
Slots |
Std |
Max |
| 10000 PRE |
2
|
512
|
512
|
0
|
128
|
128
|
0
|
32
|
32
|
Y
|
| 10000 PRE-1 |
| 10000 PRE-2 |
2 |
1024 |
1024 |
0 |
256 |
256 |
0 |
64 |
64 |
Y |
| 12000 GRP-B |
2 |
128 |
512 |
0 |
1 |
8 |
8 |
Y |
| 12000 PRP |
2 |
512 |
2048 |
0 |
1 |
64 |
64 |
Y |
| 12000 PRP-2 |
2 |
1024 |
4096 |
0 |
1 |
64 |
64 |
Y |
| 12000 Engine 0 |
2 |
128 |
256 |
4 |
128 |
256 |
0 |
N |
| 12000 Engine 1 |
2 |
128 |
256 |
4 |
256 |
256 |
0 |
N |
| 12000 Engine 2 |
2 |
128 |
256 |
4 |
256 |
512 |
0 |
N |
| 12000 Engine 3 |
2 |
256 |
512 |
4 |
512 |
512 |
0 |
N |
| 12000 Engine 4 |
1 |
256 |
512 |
4 |
512 |
512 |
0 |
N |
| CRS-1 RP |
2 |
2048 |
4096 |
0 |
1 40GB IDE disk |
Y |
| CRS-1 RP |
2 |
2048 |
2048 |
2 |
2048 |
2048 |
0 |
N |
| Notes - Core Routers |
| 12000 line cards use paired packet mem in dedicated banks (i.e. 2x64MB RX, 2x64MB TX (256MB config)). |
| PRE and PRE-1 differ in PXF memory - 512MB (former) or 1GB (latter). PRE-1 is required for broadband. |
Identifying Router Memory
| Router Model |
Procedure |
| 1841 |
Issue a show platform command. |
| 26xx |
Issue a show c2600 command. This may not work on older models of 26xx, and only works in newer IOS images - 12.2(11)T is required (Cisco Enhancement ID CSCdv58188). |
| 26xxXM |
Issue a show c2600 command. Only works in newer IOS images - 12.2(11)T is required (Cisco Enhancement ID CSCdv58188). |
| 2691 |
Issue a show platform command.
|
| 2800 |
| 3620 |
Use the procedure described at http://www.cisco.com/warp/customer/63/simm_config_3620_3640.html
|
| 3640 |
| 3631 |
Issue a show platform command.
|
| 3700 |
| 3800 |
| AS5400 |
Issue a show as5400 command. Only works in newer IOS images - 12.2(11)T is required (Cisco Enhancement ID CSCdv64625). |