Cisco Systems Cisco 12404 appendix Sram

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Appendix A Technical Specifications

Product Architecture

SRAM

The SRAM provides secondary CPU cache memory. The standard GRP configuration is 512 KB. The principle function of SRAM is to act as a staging area for routing table update information to and from the line cards. SRAM is not able to be upgraded or configured.

NVRAM

The system configuration, software configuration register settings, and environmental monitoring logs are contained in the 512-KB NVRAM, which is backed up with built-in lithium batteries that retain the contents for a minimum of 5 years. NVRAM is not able to be upgraded or configured

Caution Before you replace the GRP in the system, back up the running configuration to a Trivial File Transfer Protocol (TFTP) file server or an installed Flash memory card so you can retrieve it later.

If the configuration is not saved, the entire configuration is lost inside the NVRAM on the removed GRP and you must re-enter the entire configuration manually.

This procedure is not necessary if you are temporarily removing a GRP; lithium batteries retain the configuration in memory until you replace the GRP in the router.

Flash Memory

Both the onboard and PCMCIA card-based Flash memory allow you to remotely load and store multiple Cisco IOS software and microcode images. You can download a new image over the network or from a local server and then add the new image to Flash memory or replace the existing files. You can then boot the routers either manually or automatically from any of the stored images. Flash memory also functions as a TFTP server to allow other servers to boot remotely from stored images or to copy them into their own Flash memory.

PCMCIA Slots

The GRP has two PCMCIA slots. Either slot can support a Flash memory card or an input/output (I/O) device as long as the device requires only +5 VDC.

 

Cisco 12404 Internet Router Installation and Configuration Guide

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Contents Technical Specifications OverviewFeature Description Product ArchitectureSpecifications NebsDescription Value Requirements RangesAC-Powered Routers AC Power PlugsAC Power Plugs Route ProcessorGigabit Route Processor Figure A-2 Gigabit Route ProcessorGRP Memory Type Size Quantity DescriptionDram Total Dram Product Numbers Dram Sockets Number of DIMMsSram Asynchronous Serial Ports LEDs Description and Power SourceLED Types PcmciaEthernet Port Performance Route ProcessorPRP Memory Memory components of the PRP are listed in Table A-7Sdram Total Route Memory Cisco Product Number Dimm Modules MEM-PRP-1G=Nvram Flash Disk Size Product Number MEM-12KRP-FD1G=LED Types Fabric Alarm Line CardsPower Entry Module Monitoring Consolidated Switch Fabric StatusStatus Definition Clock and Scheduler Functionality CSF FunctionalitySystem Clock AC Power Entry Module Power Entry ModulesSwitch Fabric SchedulerDC Power Entry Module Figure A-6DC PDU DC PEMFan Tray Assembly Figure A-8 Fan Tray AssemblyFigure A-9 Internal Air Flow-Top View Air Filter Figure A-10 Cisco 12404 Internet Router Air Filter LocationMaintenance Bus Chassis Cable-Management SystemPower-On/Off Control OL-11636-01
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Cisco 12404 specifications

The Cisco 12404 is a robust router designed for service providers and large enterprises, aiming to deliver high performance, scalability, and flexibility in networking. As part of the Cisco 12000 Series, the 12404 is built to address the demands of high-bandwidth applications and a growing number of users in modern networks.

One of the standout features of the Cisco 12404 is its versatility. The router supports various modules for enhanced functionality, including high-speed interfaces, advanced processing capabilities, and additional memory. This modular design allows organizations to customize their router according to specific networking needs and expand as requirements evolve.

In terms of performance, the Cisco 12404 is equipped with a high-capacity forwarding engine that ensures rapid data transfer and low latency. This capability is crucial for businesses that rely on real-time communication, such as VoIP and video conferencing. The router supports a variety of protocols, including IP, MPLS, and Ethernet, making it adaptable to diverse operational environments.

Scalability is another significant characteristic of the Cisco 12404. It can handle thousands of routes and high volumes of traffic, making it suitable for ISPs managing large subscriber bases. With its support for 10 Gigabit and 100 Gigabit Ethernet interfaces, the router can accommodate increasing data loads without compromising performance.

Advanced features like Quality of Service (QoS) enable network administrators to prioritize traffic based on the type or importance of data. This ensures that critical applications receive the bandwidth they need while less essential services are deprioritized, thus optimizing overall network efficiency.

The Cisco 12404 also integrates advanced security measures to protect sensitive data as it flows through the network. With features like Access Control Lists (ACLs), Virtual Private Network (VPN) support, and encryption capabilities, organizations can safeguard their information against potential threats.

In conclusion, the Cisco 12404 presents a compelling solution for organizations seeking a high-performance router with scalability and versatility. By combining advanced routing technologies, modular design, and robust security features, it stands out as a reliable choice for enterprises and service providers looking to optimize their core networking infrastructure.
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