Line Card Memory

Table 21 Route Memory Configurations for Ethernet Line Cards (continued)

Total Route Memory

Cisco Product Number

DIMM Module

Route Memory DIMM Sockets

 

 

 

 

256 MB

MEM-GRP/LC-256=

2 128-MB DIMMs

DIMM0 and DIMM1

 

 

 

 

256 MB

MEM-LC4-256=2

1 256-MB SODIMM

Varies

1.This option adds a second 64-MB DIMM for a total of 128 MB for line cards that are equipped with 64 MB.

2.This option is only compatible with the 4-Port Ethernet line cards and is for replacement only.

If you are upgrading or replacing line card route and packet memory, refer to the Cisco XR 12000 Series Router Memory Replacement Instructions publication for installation procedures and the most up-to-date memory options.

Ethernet Line Card Packet Memory Options

Line card packet memory temporarily stores data packets awaiting switching decisions by the line card processor. Once the line card processor makes the switching decisions, the packets are propagated into the router switch fabric for transmission to the appropriate line card.

Table 22 lists the packet memory options for Ethernet line cards.

Table 22 Ethernet Line Card Packet Memory Options

Total Packet Memory1

Cisco Product Number

DIMM Modules

DIMM Sockets

256 MB

MEM-LC1-PKT-256=

2 RX 64-MB DIMMs

RX DIMM0 and RX

 

 

2 TX 64-MB DIMMs

DIMM1

 

 

 

TX DIMM0 and TX

 

 

 

DIMM1

 

 

 

 

512 MB (upgrade)

MEM-PKT-512-UPG=

2 RX 128-MB DIMMs

RX DIMM0 and RX

 

 

2 TX 128-MB DIMMs

DIMM1

 

 

 

TX DIMM0 and TX

 

 

 

DIMM1

 

 

 

 

1.The SDRAM DIMMs installed in a given buffer (either receive or transmit) must be the same type and size, but the individual receive and transmit buffers can operate with different memory capacities.

Removing and Installing Line Card Memory

Before beginning the memory replacement procedures in this section, ensure that you have the proper tools and equipment at hand, and that you are using appropriate ESD-prevention equipment and techniques. Before removing or installing memory, observe the following guidelines:

•Route memory DIMMs

–Route memory DIMM0 socket must always be populated.

–For certain memory configurations, the route memory DIMM1 socket can remain empty.

–DIMMs must be 3.3V devices.

•Packet memory DIMMs

–All four DIMM sockets for SDRAM buffer memory must be populated.

–Both DIMM sockets for a given buffer pair (either those for the transmit buffer or those for the receive buffer) must be populated with SDRAM DIMMs of the same type and size.

Cisco XR 12000 Series Router Ethernet Line Card Installation

 

OL-7861-01

69

 

 

 

Page 68 Page 70
Page 69
Image 69
Cisco Systems XR 12000 Series Removing and Installing Line Card Memory, Ethernet Line Card Packet Memory Options
Page 68 Page 70

XR 12000 Series specifications

The Cisco Systems XR 12000 Series routers are designed to meet the demands of modern networking environments, ensuring high performance, scalability, and reliability for service providers and large enterprises. This series is engineered to deliver advanced features that facilitate a range of applications, including core routing, edge services, and data center interconnect.

One of the main features of the XR 12000 Series is its advanced routing capabilities. These routers utilize the Cisco IOS XR software architecture, which provides a modular and distributed operating system. This architecture enhances system reliability as individual processes can be restarted independently without affecting overall system operations. As a result, service providers can achieve higher uptime and enhanced service continuity.

The XR 12000 Series supports a robust set of technologies that enable efficient data handling and transport. Notably, the series includes support for Multiprotocol Label Switching (MPLS), which enhances traffic engineering, distributed bandwidth management, and Quality of Service (QoS) capabilities. This makes the XR 12000 a preferred choice for operators looking to optimize their network performance under increasing traffic loads.

Furthermore, the XR 12000 Series excels in scalability. With a flexible modular design, operators can customize their systems to fit specific needs by adding additional line cards or service modules. These enhancements enable operators to scale both up and down based on fluctuating demands, accommodating numerous high-bandwidth applications such as video streaming, cloud services, and IoT.

Security is another critical characteristic of the XR 12000 routers. Built-in cybersecurity features, including secure boot, strong encryption, and integrity checks, protect against unauthorized access and ensure data integrity. Coupled with advanced monitoring and logging capabilities, these routers can help operators maintain robust security postures.

Additionally, the XR 12000 Series is designed to facilitate seamless integration with existing network infrastructures. The routers support various protocols and interfaces, which ensure interoperability with legacy systems and enhance overall network efficiency. This flexibility allows service providers to future-proof their investments while adapting to evolving technological landscapes.

In summary, the Cisco XR 12000 Series routers stand out for their advanced routing capabilities, scalability, robust security features, and compatibility with modern and legacy network infrastructures. These attributes make them an ideal choice for organizations seeking to enhance their networking capabilities in a rapidly changing digital environment.
Top Page Image Contents