Grizzly Intelligent Edge Device Overview

Enterprise customers with remote geographically separated sites are utilizing satellite networks to access the Internet and provide access to the corporate backbone. Inherent to the spread of these networks is the search for small access devices that allow the connection to the Internet in a very user friendly way but with a growing number of offered services, comprising basic IP functionalities (e.g., DNS, DHCP,NAT), performance enhancements (e.g., PEP and Compression) and security and traffic control services.

Traditionally a subset of these services are available as part of an edge router or can be achieved through the combination of a number of devices (e.g., VPN server, QoS manager, router). However, these products are not optimized for operation over a satellite link and
often conflict with each other. For example a VPN access device encrypts traffic so
performance enhancement features like compression can’t be utilized.

Grizzly, the Intelligent Edge Device (IED) from PolarSat offers a combination advanced IP services at low cost that can be easily managed from a remote location. The Grizzly IED enable service providers to offer subscribers not just Internet access, but enable them to use satellite broadband connections for offering IP VPNs, voice, multimedia and high-value services tailored to each subscriber of class of subscribers.

Services that carriers can offer using the Grizzly IED in conjunction with SkyIP and FlexiDAMA satellite broadband access system include:

• Integrated Voice and Data
• Bandwidth on Demand
• E-Learning service
• Telemedicine services
• Secure Intranet access
• Premium ASP services
• Tiered Internet Access

The Grizzly provides capabilities that are combined to support the above mentioned services. The key Grizzly IED features are listed below:

• Quality of Service (QoS) support of multiple application class setting and traffic shaping
• Performance Enhancement Proxy (PeP) that ensures wireline performance of TCP applications over satellite
• DNS server provides local domain name lookup
• DHCP server allows for private IP address and leasing of IP address to remote hosts
• Firewall to protect the subscribers remote LAN from unauthorized access
• IPSec encryption of traffic over the satellite link to secure user traffic
• IPComp improves throughput performance over the satellite link.

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