Allied-Telesyn AT-iMG624A-R2 Manual

998 Pages·2010·8.88 MB·English

iMG/RG Gateway
Release 3-7-04
Software Reference Manual
Document Issue 1.4
i
iMG/RG Software Reference Manual
ii iMG/RG Software Reference Manual
i. Preface
I Introduction
I.I Purpose of this manual
The Allied Telesis Gateway product set delivers multiple IP-based broadband services to home over high speed,
always-on broadband connection. This family of devices enables the delivery of voice, data, and video to cus-
tomer premises, offering benefits both to service providers and to final users. Service providers can quickly
deliver to their customers advanced services such as fast Internet, VoIP, and video on demand in a full scalable
way that is remotely manageable. End users get the benefit of a unique device interconnecting all peripherals,
computers, and telephones using a single uplink broadband connection.
This manual is the complete reference to the configuration, management, and operation of the AT-Gateway fam-
ily of devices. It includes detailed descriptions of all management commands.
It is assumed that the reader is familiar with:
• The topology of the network in which the Intelligent Business Gateway is to be used.
• Basic principles of computer networking, protocols and routing, and interfaces.
• Administration and operation of a computer network.
II Intended audience
This manual is intended for the system administrator, network manager or communications technician who will
configure and maintain AT-iMG600 devices, or who manages a network of AT-iMG600 Gateways.
It is assumed that the reader is familiar with:
• The topology of the network in which the intelligent Multiservice Gateway is to be used;
• Basic principles of computer networking, protocols and routing, and interfaces;
• Administration and operation of a computer network.
i-1
iMG/RG Software Reference Manual (Preface)
III How this Document is Organized
This preface provides an overview of the supported devices and the documentation sections that are relevant
to these devices. Using this preface, the customer should be able to see where the device fits within the ATI
iMG portfolio - and at a high level - how it is different from the other members of the family. This Preface has
four main subsections:
1. A description of the different types of devices, grouped by Network Interface Technology (ADSL, Active
Fiber, EPON, Modular).
2. A detailed list of the individual models supported - including the type of Network Interface, Number of
Ethernet LAN interfaces and the number and type of Telephony ports.
3. A list of functional groupings of devices that describes the unique traits of this set of devices - exclusive of
network interfaces.
4. A list of the different sections within the document and based on the above defined grouping - an indication
of which sections apply.
The intent of the functional groupings is to allow the customers to use the appropriate group to determine
which sections within the document apply to that set of devices, as well as identify what specific differences
there may be between the different groupings when discussing a specific topic - such as File System structure or
Switch functionality.
i-2 iMG/RG Software Reference Manual (Preface)
IV Allied Telesis Gateway Family Feature Summary
IV.I VLAN OPERATION
This family of devices supports IEEE 802.1Q tagged VLAN operation across its all switch ports. It therefore
offers a powerful combination of wirespeed Layer 2 switching between VLANs as well as high performance
Layer 3 routing between VLANs in one highly cost effective unit.
IV.II FIREWALL
This family of devices integrates a Stateful Inspection Firewall with Network Address Translation (NAT) and
Denial of Service intrusion detection and blocking for protecting customer networks. Each VLAN can be
configured to be external, internal, or DMZ. With the Virtual Server features, a web or e-mail server can sit
beyond the NAT and appear like being on the public interface. The NAT implementation supports the most
popular protocols and applications including NetMeeting (H.323 and SIP), IPSec and PPPtp.
IV.III PORT RATE LIMITING
This family of devices offers the possibility to limit the egress and ingress bandwidth on each port. This feature
allows the Service Operator to offer differentiated services to each customer and protect its network from
malicious packet flooding.
IV.IV VOICE OVER IP (VOIP)
This family of devices offer a choice of Voice over IP signaling methods, namely SIP and MGCP including NCS
1.0 profile. SIP and MGCP are optimized for operation over IP networks. This multiple protocol support
provides maximum flexibility for service providers, allowing them to provide an IP telephony service based on
cost and feature set, rather than being limited by the protocol used.
Similarly, a choice of different voice and data encoding algorithms is also available comprising G.711 A-law, μ-law (64kbps),
G.729 (8kbps,) and T.38, so that maximum VoIP interworking is assured with carrier class IP Gateways and network
switches. Quality of Service is provided through mechanisms such as the Type of Service (ToS) field in the IP packet, priority
tagging of voice traffic using IEEE 802.1p, as well as silence suppression and local generation of comfort noise – the result is
excellent voice quality.
Class 5 services are supported and the VoIP inter-operability has been certified versus major soft-switch
vendors.
IV.V VIDEO STREAMING
Video Streaming offers unique features to optimize the delivery of Video contents to customers, namely VLAN,
IGMP snooping, and proxying. This family of devices supports full IGMP snooping capability (v1/v2), and
individual LAN ports can receive different multicast transmissions e.g. different movies or TV channels. The
gateway ‘snoops’ IGMP packets in-transit, so it knows which port to forward the particular multicast data to.
i-3
iMG/RG Software Reference Manual (Preface)
This results in high-quality, high-bandwidth video streaming without affecting Internet surfing or IP telephony
on adjacent ports. The gateway also supports IGMP proxying to allow forwarding of multicast packets at Layer
3 with or without NAT.
IV.VI MANAGEMENT & CONFIGURATION
This family of devices is designed for high volume deployment, this is reflected in the Zero Touch Configuration
model, whereby no user intervention is required when installing a unit. ZTC provides intelligent and automatic
configuration of remote RG units. It analyses incoming status information from each RG unit and dynamically
creates the appropriate configuration file or operating system download as required, it then selects the
appropriate download mechanism (e.g. TFTP,HTTP, HTTPS etc.) to complete the process. The ZTC client in
the RG initiates the download process on power up, or on expiry of its DHCP lease timer. ZTC provides
secure authentication of client devices, resilience through distributed server operation and in-built scalability
for very large networks.
i-4 iMG/RG Software Reference Manual (Preface)
V Gateway Types
V.I ADSL Gateways
Asymmetric Digital Subscriber Line (ADSL) is used to provide cost-effective, high speed local loop access for
Internet and other applications where data flows downstream to end users faster that it does upstream from
end users. ADSL provides asymmetric transmission over one pair of copper telephone wires with downstream
data transmission rates ranging from 32 Kbps to 26 Mbps with ADSL2+. One single telephone line can be used
simultaneously for voice and data transmission.
The ADSL interface is designed to meet the following standards:
• ANSI T1.413 (8 Mbps)
• ITU G.992.1Annex A also known as G.dmt (10 Mbps)
• ITU G.992.2 also known as G.lite (4Mbps)
• ITU G.992.3/4 also known as ADSL2 or G.dmt.bis (12Mbps)
• ITU G.992.5 also known as ADSL2+ (24 Mbps).
These gateways typically support 4 Ethernet 10/100TX ports plus 2 Voice ports.:
V.II Active Fiber Gateways
Allied Telesis Active Fiber Gateways offer a full range of optical interfaces to fit the requirements of FTTx
applications. In full compliance with the optical performance requirements of 100 Base-FX version of IEEE
802.3u, both multi-mode and single-mode fibers are available. In addition, the bi-directional optical interface
over a single fiber, allows the best exploitation of the cabling infrastructure.
TABLE i-1 Active Fiber Gateways
OPTICAL PARAMETER SH LH BD
Fiber type Multi-mode Single-mode Single-mode
Operating wavelength 1300 nm 1300 nm TX 1310 nm
RX 1550 nm
These gateways support from 3 to 6 Ethernet 10/100TX ports plus 2 to 4 voice ports and are available in both
indoor and outdoor versions.
i-5
iMG/RG Software Reference Manual (Preface)
There is also a subset of this family of devices that support RF Overlay. These are derivations of base models -
with an “RF” suffix in the model name. This is supported by the addition of a second fiber and an optical
module that supports Analog Fiber to RF Conversion. The devices are connected to the WAN via a dual
single-mode fibre optical interface: one fibre delivers triple-play services similarly to the iMG613BD, the second
fibre receives the video broadcast channels.
TABLE i-2 Active Fiber Gateways with RF Overlay
OPTICAL PARAMETER Fiber to Eth/VoIP Fiber-to-RF
Fiber type Single-mode Single-mode
Operating wavelength TX 1310 nm RX 1550 nm
RX 1550 nm
The separated passive unit named RG001 where the optical cable is terminated, allows easy installation,
maintenance and replacement thanks to a plug-and-play optical connection.
V.III Passive Optical Network Fiber Gateways
Allied Telesyn has expanded the portfolio to include an EPON Active Fiber Outdoor Gateway. This device is
an evolution of the Active Fiber Outdoor Gateway - supporting 6 Ethernet 10/100TX ports and 4 voice ports.
A passive optical network (PON) is a point-to-multipoint, fiber to the premises network architecture in which
unpowered optical splitters are used to enable a single optical fiber to serve multiple premises, typically 32-128.
A PON consists of an Optical Line Terminal (OLT) at the service provider's central office and a number of
Optical Network Units (ONUs) near end users. A PON configuration reduces the amount of fiber and central
office equipment required compared with point to point architectures.
Downstream signals are broadcast to each premises sharing a fiber. Encryption is used to prevent
eavesdropping.
Upstream signals are combined using a multiple access protocol, invariably time division multiple access
(TDMA). The OLTs “range” the ONUs in order to provide time slot assignments for upstream
communication.
V.IV Active Fiber Business Gateways
Allied Telesyn Active Fiber Business Gateways offer a full range of optical interfaces via an SFP or 100M TX
interface to fit the requirements of FTTx or MDU applications. This family boasts higher performance and a
larger number of Voip interfaces. Being AC Powered - it is perfectly adapted for installation in business or
MDU applications:
i-6 iMG/RG Software Reference Manual (Preface)
V.V Modular Gateways
Allied Telesyn Modular Outdoor Gateways offer a full suite of choices to the customer - for both WAN
interfaces and for LAN interfaces. This hardened device is designed for ease of installation - and long lasting
robust service. It allows the customer to select a Base platform for deployment and management - that can be
enhanced as needs evolve. This base platform supports 2 or 4 Voice ports and 6 10/100M TX Ports.
The following Modular WAN interfaces are supported:
• 100M Active Fiber
• 1000M Active Fiber
• EPON Fiber
The following Modular LAN interfaces are Supported in addition.
• 1000M Copper Ethernet
• T1/E1 Circuit Emulation
• HPNA V3.1
i-7
iMG/RG Software Reference Manual (Preface)
VI Supported Products
The following table lists all the Gateway Series devices supported by this software release along with informa-
tion indication the types of interfaces available.
TABLE i-3 RG/iMG Models
Type iMG/iBG Modela Customerb Networkc 2-5 3-5 3-6 3-7
RG613TX FXS=2, SM, SF RG600 - - RG600E
Fiber BD/LH/SH LAN=3
RG656BD FXS=3, SM, SF RG600 - - RG6x6E
LAN=6
iMG606BD LAN=6 SM, SF RG600 - - RG6x6E
LH/SH
iMG616BD FXS=2, SM, SF - iMG616E - iMG616E
LH/SH LAN=6
iMG616RF, RF+, FXS=2, SM, SF - iMG616E - iMG616E
iMG616SRF, SRF+ LAN=6, RF
O’lay
iMG616W FXS=2, SM, SF - - - iMG616W
LAN=6, RF
O’lay,
802.11b/g
iMG646BD FXS=4, SM, SF RG600 - - RG6x6E
LH/SH LAN=6
iMG646BD-ON FXS=4, SM, SF RG600 - - RG6x6E
LAN=6
iMG646PX-ON FXS=4, EPONd RG600 - - RG6x6E
LAN=6
iBG915-FX FXS=8, SFP/TX - - - iBG915FX
LAN=5
ADSL iMG624A LAN=4 ADSL2+ (A/ - iMG624A - iMG624A
iMG624B B) iMG624B iMG624B
iMG634A FXS=2, ADSL2+ - iMG634A - iMG634A
iMG634B LAN=4 (A/B) iMG634B iMG634B
iMG624A-R2 LAN=4 ADSL2+(A) - - - iMG624A-
R2
iMG634A-R2 FXS=2, ADSL2+ (A/ - - - iMG634A-
iMG634B-R2 LAN=4 B) R2
iMG634B-
R2
iMG634WA FXS=2, ADSL2+ (A/ - iMG634W - iMG634W
iMG634WB LAN=4, B) A A
802.11b/g iMG634WB iMG634WB
i-8 iMG/RG Software Reference Manual (Preface)