STM SatLink Hub Family - Manual (Page 4)

SatLink NetAcc
(software on STM supplied servers)
SatLink NMS & NCC
(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 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 sec-
ond. ACM is implemented across all supported MOD-
CODs 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.
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.
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.
SatLink Hub design uses STM’s Open Hub
Architecture with commercial off-the-shelf
modules mounted in standard racks with
high-capacity Gigabit Ethernet inter-
connects. This eases growth and re-
configuration, 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 Open Hub Architecture
SatLink 8560 RLS
SatLink Hub Family