Cisco Systems 3600 Memory Types, Memory Installation Documentation, Memory Specifications

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Chapter 1 Overview of Cisco 3600 Series Routers

Memory

Memory

This section describes the various types of memory that may be present in a Cisco 3600 series router.

Memory Types

Cisco 3600 series routers support the following types of memory:

•DRAM or SDRAM—Stores the running configuration and routing tables, and is used for packet buffering by the router’s network interfaces. The Cisco IOS software executes from DRAM.

•Nonvolatile random-access memory (NVRAM)—Stores the system configuration file and the virtual configuration register. (For more information, see Appendix C, “Configuration Register.”)

•Flash memory—Stores the operating system software image. You can also add Flash memory on PCMCIA cards and compact Flash cards, depending on the router.

•EPROM-based memory—Stores the ROM monitor, which allows you to boot an operating system software image from Flash memory or PCMCIA memory.

Memory Installation Documentation

For information about installing DRAM, SDRAM, NVRAM, and Flash memory SIMMs, refer to the following hardware configuration note:

•Upgrading System Memory in Cisco 3600 Series Routers

For information about installing Flash memory PCMCIA cards, refer to the following hardware configuration note:

•Installing and Configuring Flash Memory Cards in Cisco 3600 Series Routers

For information about installing compact Flash memory cards, refer to the following hardware configuration note:

•Installing and Formatting Cisco 2691, Cisco 3631 and Cisco 3700 Compact Flash Memory Cards

Memory Specifications

Table 1-1through Table 1-4list processor and memory specifications for the routers.

Table 1-1 Cisco 3620 Router Processor and Memory Specifications

 

 

 

 

Description

Specification

 

 

 

 

 

 

 

 

 

 

 

 

Processor

80-MHz IDT1 R4700 RISC

 

 

 

 

 

DRAM (main plus shared)

4 to 64 MB

 

 

 

 

 

 

 

 

 

 

 

NVRAM

32 KB

 

 

 

 

 

 

 

 

 

 

 

Flash memory (SIMM)

4 to 32 MB

 

 

 

 

 

 

 

 

 

 

 

Flash memory (PCMCIA)

2 to 40 MB

 

 

 

 

 

 

 

 

 

 

 

Boot ROM

512 KB

 

 

 

 

 

 

 

 

 

 

 

1. IDT = Integrated Device Technology.

 

 

 

Cisco 3600 Series Routers Hardware Installation Guide

 

 

 

 

 

 

 

 

 

 

 

 

1-6

 

 

 

 

OL-2056-05

 

 

 

 

 

 

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Contents Hardware Features Overview of Cisco 3600 Series RoutersCisco Front Panel of the Cisco 3640 Router Front Panel of the Cisco 3660 Router Modules and Interface Cards Cisco 3662 Router with Two Fast Ethernet InterfacesMemory Memory Installation DocumentationMemory Specifications Memory Types55 KB Interface Numbering Cisco 3620 and Cisco 3640 InterfacesCisco 3631 Interfaces Voice Interface NumberingInterface Numbering-Example Cisco 3660 Interfaces Cisco 3660 Slot NumbersSystem Specifications Regulatory Compliance and Safety Information document thatCisco 3631 Router System Specifications Cisco 3640 Router System Specifications Regulatory Compliance OL-2056-05
Related manuals
Manual 10 pages 46.09 Kb Manual 52 pages 58.61 Kb Manual 18 pages 19.61 Kb Manual 24 pages 16.63 Kb Manual 36 pages 49.11 Kb

3600 specifications

Cisco Systems 3600 is a high-performance modular router series designed for small to medium-sized enterprises and branch offices. Launched in the late 1990s, it has been widely recognized for its flexibility, scalability, and reliability. The series is part of Cisco's extensive networking portfolio and has played a vital role in delivering various services and applications while enhancing operational efficiency.

One of the main features of the Cisco 3600 series is its modular architecture, allowing organizations to customize the router according to their specific needs. The system supports various interface modules that can accommodate different types of connections, including serial, Ethernet, and DSL, which helps in building versatile network solutions. The modularity not only increases the router’s lifespan by enabling upgrades as technology changes but also supports future expansion as the organization grows.

The Cisco 3600 series routers utilize advanced routing protocols, such as RIP, OSPF, EIGRP, BGP, and IS-IS, to ensure efficient data transmission and optimal network performance. This capability allows the routers to adapt to varying traffic demands and complexities, thereby optimizing bandwidth utilization and reducing latency in communications. With extensive memory options, including Flash and DRAM, the 3600 series can handle robust data processing and support intricate routing environments.

Security is another critical feature of the Cisco 3600 series. It includes support for VPNs, firewalls, and other security protocols, providing a secure environment for data transfer. The implementation of features like Access Control Lists (ACLs) and Intrusion Detection Systems (IDS) enhances the overall security posture, making it suitable for organizations looking to protect their sensitive information.

In terms of scalability, Cisco 3600 routers can easily accommodate increased workloads and network growth. This is done through the provision of additional modules and cards to increase capacity and performance. The series can also support multiple WAN connections, enabling seamless integration with various telecommunication services.

Additionally, the Cisco 3600 series is designed for ease of management. Utilizing Cisco's IOS software, network administrators can manage and configure the routers efficiently, thanks to a user-friendly interface and extensive command capabilities. This makes troubleshooting simpler and ensures network availability remains high.

In conclusion, Cisco Systems 3600 series routers combine robust performance, security features, and scalability, making them an invaluable asset for businesses looking to maintain a reliable and efficient networking solution.
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