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Upgrading Memory in Cisco 800 Series Routers
OL-4360-04
Upgrading the DRAM
Because of the height restriction of the actual DRAM component, you must order the additional DRAM
from Cisco Systems.
You can order upgrade kits and have trained and qualified personnel add the memory.
Table 7 identifies the DRAM upgrade kits available for Cisco 801–806, 811–813, 826–828, 831, 836,
and 837 routers.
Cisco 811–813 routers 4 MB or 8 MB 8 MB
(onboard DRAM only)
16 MB
Cisco 826, 827, and
827H routers
4 MB, 8 MB, or
16 MB
The default memory depends on
the firmware:
• For Cisco IOS Base IP and IP
firmware, 20 MB
(16 MB of onboard DRAM
and a 4-MB DRAM memory
card)
• For Cisco IOS IP Plus and
3DES firmware, 24 MB
(16 MB of onboard DRAM
and an 8-MB DRAM memory
card)
32 MB
Cisco 827-4V routers 4 MB, 8 MB,
16 MB, or 32 MB
48 MB
(16 MB onboard DRAM and
32-MB DRAM memory card)
48 MB
Cisco 828 Router 4 MB, 8 MB, or
16 MB
The default memory depends on
the firmware:
• For Cisco IOS Base IP and IP
firmware, 20 MB (16 MB of
onboard DRAM and a 4-MB
DRAM memory card)
• For Cisco IOS 3DES and IP
Plus firmware, 24 MB (16 MB
of onboard DRAM and an
8-MB DRAM memory card)
32 MB
Cisco 831
1
, 836, and 837
routers
4 MB, 8 MB, or
16 MB
64 MB
(onboard DRAM only)
80 MB
Cisco 851 and 857
routers
64 MB or
128 MB
64 MB
(onboard DRAM only)
64 MB
Cisco 871, 876, 877, and
878 routers
64 MB or
128 MB
128 MB
(onboard DRAM only)
256 MB
1. early 831 versions shipped with only 32MB onboard DRAM
Table 5 DRAM Memory Options (continued)
Platform
DRAM Memory
Card Options Default DRAM Memory
Maximum DRAM
Memory