The Cisco® GSS 4491 Global Site Selector globally load-balances distributed data centers. It is the third addition to the Cisco global site selector product line and with the recently released GSS version 1.2 software provides four new features:
• Traffic management that routes a client to the closest data center
• Global site persistence technology required for e-commerce applications
• TACACS+ for secure command and control access
• Multiuser roles for complete control of user management capabilities
The Cisco GSS 4491 acts as the cornerstone of multisite disaster recovery plans in deployments of Cisco market-leading content switches. Customers deploying new Cisco content switches such as the Cisco CSS 11500 Content Services Switch and Content Switching Module (CSM) for the Cisco Catalyst® 6500 Series switches or customers who have already deployed legacy switches such as the Cisco CSS 11000 and Cisco LocalDirectors can benefit from the new levels of traffic management and centralized command and control provided by the Cisco GSS 4491.
The Cisco GSS 4491 delivers the following capabilities:
• Provides a scalable, dedicated hardware platform for Cisco 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 server load balancers (SLBs)
• Complements existing DNS infrastructure by providing centralized domain management
• Integrates tightly with Cisco SLBs without sacrificing the ability to work in a heterogeneous environment of DNS-capable networking products
AVAILABLE MODELS
The Cisco GSS 4491 is the only model and ships in a one-rack unit form factor. There is an option is to select the proper power cable. Table 1 gives ordering information for the Cisco GSS 4491.
ORDERING INFORMATION
The Cisco GSS 4491 supports only AC power and there are no options. Orderable part numbers are given in Table 1.
Table 1. Cisco GSS 4491 Ordering Information
Product Number
Description
Cisco GSS 4491-K9
Global Site Selector
SF-GSS-V1.2-K9
Global Site Selector software
Table 2. Features and Specifications
Feature
Description
Cisco Global Site Selector Ports
Two 10/100/1000 Fast Ethernet
DNS Requests per Second
4000, depending on configuration
Device Supported
• CSSs-Load and availability
• CSMs-Load and availability
• Cisco LocalDirector-Availability using HTTP head or TCP keepalive
• Cisco IOS®SLB-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-command-line interface (CLI)
• Access to system through Telnet
• Access to system through Secure Shell Protocol (SSH)
• GUI-Secure HTTP (HTTPS) for Internet Explorer and Netscape Navigator
Management Information Bases (MIBs)
Read-only monitoring of network and device status, including RFC 1213 (MIB-II) and RFC 1514 (HOST-RESOURCES-MIB)
Physical
• One-rack unit size chassis
• Network management serial port
Ports
Two 10/100/1000 Fast Ethernet autosensing, one console port
Storage
One 80-GB hard drive
Software Image
SF-GSS-V1.2-K9
Memory/Processor
1 GB RAM; Prescott 3.2 GHz CPU
Power
Integrated AC power (autosensing 110V/60 Hz)
Physical
• Dimensions (H x W x D):
– 1.75 x 16.54 x 16.69 in. (44 x 424 x 430 mm)
• Weight:
– 28 lb (12.7 kg)
Environmental
• Operational temperature: 50 to 95°F (10 to 35°C)
• Storage temperature: -40 to 140°F (-40 to +60°C)
• Relative humidity: 80%, nonoperational
Certifications
• Safety UL 60950; CAN/CSA -C22.2 No. 60950; EN60950:
• EMC FCC Part 15 (CFR 47) Class A; ICES-003 Class A; EN 55022 Class A;
• CISPR22 Class A; AS/NZS 3548 Class A ; VCCI Class A ; EN 55024; EN 50082-1
