STM SatLink Hub Family User Manual

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SatLink Hub Family

Efficiency | Throughput | Scalability | Reliability

Standards Compliant TDM/TDMA Satellite Networks

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SatLink Hub Family

SatLink Hubs provide the high-performance modems, IP gateway, management and control functions for all STM VSAT networks. They implement a TDM/TDMA network in accord with DVB-S2 & DVB-RCS2 standards, offering Bandwidth-on-Demand, ACM, and QoS on all carriers, while delivering excellent efficiency, throughput, scalability, and

reliability. The Hub design employs STM’s Open Hub Architecture using a common set of

modules that ease growth and re-configuration. All SatLink networks are fully managed by the SatLink NMS.

A full range of SatLink Hub configurations are offered from small portable Hubs to carrierclass high-availability Hubs with 99.999% uptime. Hubs configured with redundancy in key modules can be upgraded with minimal or no disruption to traffic flows.

STM is the leader in DVB-RCS & DVB-RCS2 networks including: VSATs, Hub Systems, and Hub components, with value-added options and advanced QoS for data, voice, and video networking. STM supplies ISPs, governments, enterprises, and partners around the world, offering turnkey integration, installation, 24x7 global support, and managed network services.

Features & Benefits

● Bandwidth Efficiency at Many Levels

The efficiency of DVB-S2 forward links is matched with DVB-RCS2 return links offering ACM per burst, Adaptive Carrier Selection (ACS), return carrier spacing down to

1.12x, multiple layers of header compression, and the most efficient IP encapsulation, with TDMA management that assures no wasted bandwidth.

● Comprehensive IP Networking Features

SatLink Hubs integrate full-featured IP routing & TCP & HTTP acceleration with VPN tunneling, VLANs, & Virtual Satellite Networks (VSN) for multiple IP address spaces, and mesh networking routing control (with DVB-RCS).

● Advanced Traffic Shaping with QoS

Advanced traffic shaping on Forward and Return Links with four QoS classes meet the strict requirements for jitter and/or delay sensitive VoIP, video conferencing, video streaming, and time critical data applications.

● Software-Defined RLS & FLS Platform

The FLS & RLS use STM’s own software-defined modem platform optimized for processing both IP packets and the DVB standard waveforms, using STM firmware & software running on FPGAs & CPUs. They deliver many cost reductions and operational benefits, including: high

-efficiency MODCODs, large TDMA carrier groups, fastfeedback ACM integrated with IP QoS, and custom configurations of carrier groups for maximum efficiency in burst-mode operation and space & power savings.

● High-Availability for Maximum Uptime

Module redundancy using 1:1 or N:1 with fast failover. Geographic redundancy with multiple RF systems. SW updates on-the-fly. Uptimes can exceed 99.999%.

● ACM, ACS, & Rain Fade Mitigation

With Adaptive Coding and Modulation (ACM) applied on both Forward and Return Links and Adaptive Carrier Selection (ACS) on all TDMA carriers, the impact of rain fades is greatly mitigated, even in Ka band.

● Traffic Engineering, VNOs, & VSAT Groups

SatLink’s traffic engineering enables cost-effective hub sharing by controlling bandwidth consumption and QoS policies of Virtual Network Operators (VNOs) for each of their VSAT Groups, without assigning hardware or dedicated carriers to particular VNOs.

● Comprehensive NMS & NCC Software

STM’s database-driven SatLink Network Management System (NMS) and the SatLink Network Control Centre (NCC) software optimize network performance using close-loop control and simplify the configuration and provisioning of Hub modules, VSATs, VSAT Groups, carriers, VSNs, and VNOs. Support for multiple beams, across multiple satellites on multiple bands (C, Ku, Ka, EHF), including cross-strapped transponders, adds versatility and scalability.

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9300 9400 9800

Forward Link

Return Link

Forward Link ACM & QoS

Return Link ACM & QoS

Max # of Beams

# of VSATs

Redundancy

VNO

VSN

Return SCPC Mode

TCP Acceleration

Accounting Support

Mesh Topology

Commercial TRANSEC

Forward Automatic UPC

Rack Space*

Easily Upgradable

SatLink Hub Family

SatLink Hub Feature Comparison

DVB-S2 DVB-S2 DVB-S2

DVB-RCS2 DVB-RCS2 DVB-RCS2

  

10 10 10

0-1000 0-1000 0-50000

N:1 or 1:1 N:1 or 1:1

     

  

     

Optional Optional

Optional Optional Optional

Half-Rack (22U) 1 to 2 Racks (42U) 1 to 3 Racks (42U)

 (to 9400)  (to 9800)



*Recommended rack space with room to grow. For a SatLink 9800 Hub expecting 8 or more beams, 3 racks (42 U each) are recommended.

Example Configurations

(including 1 test VSAT per beam)

9300

9400

9800

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SatLink Hub Family

SatLink Open Hub Architecture

SatLink Hub design uses STM’s Open Hub

Architecture with commercial off-the-shelf modules mounted in standard racks with high-capacity Gigabit Ethernet interconnects. This eases growth and reconfiguration, while also allowing for integration of 3rd party products for value

-added features. A full range of SatLink Hub configurations are offered from small portable Hubs to carrier-class Hubs with

99.999% uptime. All configurations use a common set of modules.

SatLink 8560 FLS

The SatLink 8560 FLS enables DVB-S2 forward link TDM carriers at up to 45 Msps with ACM for up to 10,000 VSATs. It efficiently combines the functions of a DVB-S2 (or DVB-S) modulator with IP routing, IP encapsulation, and header compression at 20,000 IP packets per second. ACM is implemented across all supported MODCODs with very low latency and integration with QoS policies per VSAT, at information rates up to 158 Mbps. Configurations with N:1 redundancy (N up to 5) are supported.

SatLink 8560 RLS

The SatLink 8560 RLS enables large DVB-RCS2 return link capacities by using up to 24 TDMA carriers, up to 8 Msps each, within a 40 MHz band using ACM per burst, at

1.12x carrier spacing. It is a combination of a DVB-RCS2 (or RCS) burst demodulator with IP packet re-assembly and header de-compression at up to 20,000 IP packets per second. The 8560 RLS handles up to 10,000 VSATs with two QoS classes each, or 5,000 VSATs with four QoS Classes each. Configurations with N:1 redundancy (N up to 5) are supported. Multiple active RLS modules may be assigned to a single active FLS.

SatLink NetAcc

(software on STM supplied servers)

The SatLink NetAcc software delivers high-performing TCP acceleration while also implementing IP routing, QoS policy enforcement, and traffic shaping, as well as optional user accounting and fair use policy control. It supports up to 10,000 VSATs with 25,000 bi-directional accelerated TCP sessions, with up to 10 Mbps of TCP throughput in a single direction. Total capacity is rated at 150 Mbps on the supplied multi-core servers. Each NetAcc server supports multiple FLS/RLS. Configurations with N:1 redundancy (N up to 5) are supported.

SatLink NMS & NCC

(software on STM supplied servers)

The SatLink Network Management System (NMS) and Network Control Centre (NCC) software hold the keys to high-performance management & control. In smaller Hubs both of these software functions run on the same server with redundancy implemented as 1:1. In the 9800 Hub these functions run across multiple servers with great scalability for the NCC by using N:1 redundancy. In the 9800 Hub the NMS is 1:1 redundant and uses a high-availability disk cluster system. The NMS oversees the health and automatic switchovers of all other SatLink modules used in the Hub.

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Specifications

SatLink Hub Family

for TDM/TDMA Satellite Networks

Compression & Encryption

Header Compression: MPE, UDP/IP, and RTP/UDP/IP TRANSEC: AES-256 encryption on Layer 2 (optional)

IP Routing

Terrestrial-Side Routing: RIP V2, OSPF, BGP, MPLS Edge

(Requires IP Router or L3 switch option) Satellite-Side Routing (in FLS): Dynamically linked to NMS set-up of each VSAT, VNO, & VSN

Multicast IP: Multicast IP forwarding & IGMP at VSAT VSN/VLANs: Virtual Satellite Networks, each with inde- pendent IP address spaces, using 802.1Q VLANs in Hub

Shaping/QoS & Acceleration

Traffic Shaping: Shaping with rate limiting per VSAT and

per VSAT Group; Granularity of 2 kbps for Bandwidthon-Demand, 1 kbps for CRA QoS: 4 different QoS Classes, 7 queues; multi-field IP packet classification rules in headers at Layers 2, 3, & 4 on Forward and Return (plus Mesh Links with DVB-RCS) TCP Acceleration: Up to 10 Mbps per connection; up to 25,000 accelerated bi-directional TCP sessions per Network Accelerator module

Time & Frequency References

Time Protocols: TP (RFC 868)/ NTP (RFC 1305) Frequency Stability: 10 NCR Stability: Better than 37ns with respect to UTC

-9

or better if slaved to GPS

Compliance

CE: Fully compliant with R&TTE Directive DVB-RCS2: ETSI EN 301 545-2 DVB-RCS: ETSI EN 301 790 DVB-S2: ETSI EN 302 307 International: Country specific certifications

TDM Forward Links (DVB-S2)

Symbol Rates: 1 to 45 Msps, increments of 100 sps Outer/Inner FEC: BCH/LDPC MODCODs:

 QPSK: 1/4, 1/3, 2/5, 1/2, 3/5, 2/3, 3/4, 4/5, 5/6, 8/9, 9/10  8PSK: 3/5, 2/3, 3/4, 5/6, 8/9, 9/10  16APSK: 2/3, 3/4, 4/5, 5/6, 8/9, 9/10  32APSK: 3/4, 4/5, 5/6, 8/9, 9/10

ACM: Full-range or custom list, plus min & max MODCOD configurable by VSAT

FEC Frames: Normal (64 Kbit) and Short (16 Kbit) Roll-off Factor: 20%, 25%, or 35% Automatic UPC: Built-in to FLS (requires beacon receiver) IP Encapsulation: GSE or MPE/MPEG-TS

TDMA Return Links (DVB-RCS2)

Symbol Rates: 125 Ksps to 8 Msps FEC Type: 16-State Turbo Code MODCODs:

 QPSK: 1/3, 1/2, 2/3, 3/4, 5/6  8PSK: 2/3, 3/4, 5/6  16QAM: 3/4, 5/6

ACM: Full-range with min & max MODCOD configurable by VSAT

Carrier Spacing: As low as 1.12x symbol rate TDMA Carriers per RLS: up to 24 in a 40 MHz band IP Encapsulation: RLE per standard Option for DVB-RCS: Selectable by RLS instance

SatLink NMS & NCC: Highlights

Database: Oracle™ with back-up, restore, & roll-back VNOs (Virtual Network Operators): Access controls for each staff member of a VNO, no extra HW required VSAT Groups: 24 VSAT Groups per TDMA Carrier Group Capacity Requests: Rate, Volume, & Combined Mode VSAT Provisioning: Web-based, fast and simple MF-TDMA Resource Control: Assignment policies per QoS

class by VSAT and VSAT Group; customized superframes from 70 to 250 msec; ACS assigns feasible symbol rate

MF-TDMA Frame Structure: May be tailored per carrier Topologies: Star (and Mesh or Hybrid with DVB-RCS) OSS/BSS Integration with SatLink NMS: North-bound soft-

ware integration interface provided via SOAP

www.stmi.com

All specifications and features subject to change without notice. STM reserves the right to discontinue the SatLink 1000 model at any time and provide a replacement model such as the SatLink 2000 with equal or better features. SatLink and the STM logo are registered trademarks of STM Group, Inc.