The Cisco® GSS 4492R Global Site Selector globally load balances distributed data centers. It is the fourth addition to the Cisco Global Site Selector product line, and with the recently released Cisco GSS Version 1.3 software, it provides three new features:
• Approximately 100 new command-line interface (CLI) commands for improved configuration for global server load balancing (GSLB)
• Modification of the GSS configuration through import and export of a flat text file
• Keepalive group that allows the GSS to check the availability of multiple devices
The Cisco GSS 4492R is the cornerstone of multisite disaster recovery plans in deployments of Cisco content switches. Customers deploying new Cisco content switches such as the Cisco CSS 11500 Content Services Switch and the Cisco Content Switching Module (CSM) for the Cisco Catalyst® 6500 Series Switches, Cisco IOS® Software server load balancing (SLB) devices, or application control engines (ACEs) and customers who have already deployed legacy switches such as the Cisco CSS 11000 or Cisco LocalDirector can benefit from the new levels of traffic management and centralized command and control that the Cisco GSS 4492R provides.
The Cisco GSS 4492R delivers the following capabilities:
• Provides a scalable, dedicated hardware platform for Cisco Systems® content switches to help ensure that Web-based applications are always available by detecting site outages or site congestion and rerouting content requests
• Improves the global data center selection process by offering user-selectable global load-balancing algorithms
• Offloads Domain Name System (DNS) servers by taking over the domain resolution process and transmits these requests at thousands of requests per second
• Scales to support hundreds of data centers or SLB devices
• Complements existing DNS infrastructure by providing centralized domain management
• Integrates tightly with Cisco SLB devices without sacrificing the ability to work in a heterogeneous environment of DNS-capable networking products
AVAILABLE MODELS
The Cisco GSS 4492R is the only model available. It ships in a one-rack-unit form factor, with an option to select the correct power cable. Table 1 provides ordering information for the Cisco GSS 4492R.
The Cisco GSS 4492R supports only AC power. Table 2 lists part numbers for ordering.
Table 1. Cisco GSS 4492R Ordering Information
Product Number
Description
Cisco GSS 4492R-K9
Global Site Selector
SF-GSS-V1.3-K9
GSS software
Table 2. Features and Specifications
Feature
Description
Ports
• Two 10/100/1000 Fast Ethernet
DNS requests per second
• 20,000, depending on configuration
Devices supported
• Cisco CSSs-Load and availability
• Cisco CSMs-Load and availability
• Cisco LocalDirector-Availability using HTTP head or TCP keepalive
• Cisco IOS® Software SLB devices-Availability using HTTP head or TCP keepalive
• DNS name servers-Availability using name server request keepalive
• Origin servers-Availability using HTTP head, TCP, or Internet Control Message Protocol (ICMP) ping keepalive
• Content engines-Availability using ICMP ping or TCP keepalive
• Content routing agents-Availability using content routing agent keepalive
Network management
• Console port-CLI
• Access to system through Telnet
• Access to system through Secure Shell (SSH) Protocol
• GUI-Secure HTTP (HTTPS) for Internet Explorer and Netscape Navigator
MIBs
• Read-only monitoring of network and device status, including RFC 1213 (MIB-II) and RFC 1514 (HOST-RESOURCES-MIB)
