Cisco 1751 - Manual (Page 25)

1-9
Cisco 1751 Router Hardware Installation Guide
78-11258-04
Chapter 1 Cisco 1751 Router Overview
Router Memory
Router Memory
This section describes the types of memory stored in the router and how to find
out how much of each the router has.
For instructions on how to upgrade memory in the router, refer to the “Installing
and Upgrading Memory and Packet Voice Data Modules” appendix in this guide.
Types of Memory
The router has the following types of memory:
• Dynamic RAM (DRAM)—This is the main storage memory for the router.
DRAM is also called working storage and contains the dynamic configuration
information. The router stores a working copy of Cisco IOS software,
dynamic configuration information, and routing table information in DRAM.
The Cisco 1751 router ships with 32 MB of DRAM.
• Nonvolatile RAM (NVRAM)—This type of memory contains the startup
configuration.
SLOT2
Ø Green VIC-2E&M Blinks when data is being sent to or received from
the port.
VIC-2FXO
VIC-2FXS
VIC-2BRI-NT/TE
1 Green VIC-2E&M Blinks when data is being sent to or received from
the port.
VIC-2FXO
VIC-2FXS
VIC-2BRI-NT/TE
Table 1-4 Front-Panel LEDs (continued)
LED Color Cards Supported LED Meaning