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AUSTRALIAN SECURITIES & INVESTMENTS COMMISSION









DATASTREAM


DATA COMMUNICATIONS SPECIFICATION














Version 1.05


7th September 2000

Data Communications Specification

Version 1.0
5

ASIC

ii


Notice To Readers








































Copyright
© Australian Securities

& Investments Commission 1996
-

2000 with all rights
reserved


This document is the property of the
ASIC
. No part of this document may be copied and used in
other publications unless
ASIC

authorship is acknowledged

Data Communications Specification

Version 1.0
5

ASIC

iii

Contents

1. Overview

................................
................................
................................
................................
....

1

2. WAN Carrier service

................................
................................
................................
................

1

3. TCP/IP

................................
................................
................................
................................
.......

3

3.1. General

................................
................................
................................
...........................

3

3.2. Link layer ( OSI layer 2 )

................................
................................
................................

3

3.3. Network layer ( OSI layer 3 ) Internet Protocol ( IP )

................................
....................

3

3.4. Transport layer ( OSI layer 4

)

................................
................................
........................

3

3.5 Failover Facilities

................................
................................
................................
............

4

4. Customer Connection Pre
-
requisites

................................
................................
......................

5

4.1 Customer Informa
tion for ASIC
................................
................................
......................

5

4.2 ASIC Information for Customer
................................
................................
......................

5

5. Connection Diagram

................................
................................
................................
.................

6

Appendix A
-

Am
endment History

................................
................................
.............................

7

Data Communications Specification

Version 1.0

ASIC

Page
1

1.

Overview

This document specifies the data communications protocols at the OSI layers one to
four to be used by Australian Securities & Investments Commission Datastream
applicati
on program. It includes:



WAN carrier service



TCP/IP



failover facilities

Section 5. illustrates the general connectivity arrangements for the primary line. The
secondary line connectivity arrangements mirror the p
rimary
-

see section 3.5
Failover Facilities for details.


2.

WAN Carrier service


Carrier technology

Frame Relay ( FR )

Carrier service provider

Telstra National Frame Relay

Circuit type

Permanent Virtual Circuit ( PVC )

PVC Committed Information Rate
(CIR)

To be determined by customer

UNI

ANSI

Frame size

2048 octets per frame

FR access line for customer (A
-
end)

To be provided by customer

FR access line for ASIC (B
-
end)

To be provided by ASIC

ASIC FR line number (B
-
end number)

Primary Y216028412N

S
econdary
Y216025673N

PVC B
-
end service address (both primary
AND secondary)

Reserve Bank of Australia

Level 2B

65 Martin place, Sydney 2000

PVC B
-
end site contact

Duty operator

tel:


02
-
9551 9486

ASIC comms contact


Ben Tran

tel: 02 0011 2759

fax 02

9911 2777

email: ben.tran@asic.gov.au


OR

Warren Loughhead

tel: 02 9911 2107

fax: 02 9911 2777

email:warren.loughhead@asic.gov.au

Frame Relay Access Device for customer

To be provided by customer

(Cisco with IOS 11.1 or greater recomme
nded)

Data Communications Specification

Version 1.0

ASIC

Page
2

Frame Relay Access Device for ASIC

Cisco router

Telstra contact for FR service orders

Contact your Telstra account representative


Data Communications Specification

Version 1.0

ASIC

Page
3

3.

TCP/IP

3.1. General

The Datastream server application uses the Transmission Control Protocol/Internet
Protoco
l ( TCP/IP ) protocol stack implementation provided by the Sun Solaris
Version 2.5 Unix operating system from Sun Microsystems.

3.2. Link layer ( OSI layer 2 )

1.

Link Layer circuit type: Frame Relay Permanent Virtual Circuit ( PVC )
configured as point
-
to
-
point link.

2.

The IP datagrams are encapsulated in Frame Relay PVC as per RFC 1490.

3.3. Network layer ( OSI layer 3 ) Internet Protocol ( IP )

Routing:


Note that identical processes must be followed for access to the primary and
secondary ASIC assess p
aths.

1.

Internet Protocol ( IP ), as per RFC's 791, 815, 950 etc. by IETF, is used for
routing Datastream data between the ASIC's Datastream Server host and a
customer's host.

2.

Static routes are to be configured and used for the data traffic between ASI
C's
Datastream server host and a customer's host.

3.

Each customer assigns a IP subnet number to its own FR PVC based point
-
to
-
point link.

4.

Each customer assigns IP addresses to the DLCIs at both ASIC's end and their
own end of the FR PVC in order to cre
ate a virtual point
-
to
-
point serial link
connection between ASIC's and the customer's routers.

5.

ASIC configures its dedicated Datastream router at RBA site with the IP address
assigned by customer for the PVC. This IP address will be used by the static r
oute
as next hop address for the IP packets travelling in the direction from the
customer's host to the Datastream Server host.

6.

The customer configures its own router to use the IP address for its own PVC.
This IP address will be used by the static rout
e as next hop address for the IP
packets travelling in the direction from the Datastream Server host to the
customer's host.

7.

The multiple PVCs from Datastream customers terminating at the ASIC's router
are configured as subinterfaces on one common physi
cal serial interface used to
access the Frame Relay network.

8.

ASIC configures its internal network devices to provide a both way static route
between ASIC's Datastream server host and a customer's host.

9.

The customer configures its internal network dev
ices to provide a both way static
route between ASIC's Datastream server host and the customer's host.


3.4. Transport layer ( OSI layer 4 )

Transmission Control Protocol ( TCP ), as per RFC's: 793, 761, 675 etc by IETF, is
used to provide connection orien
ted reliable data stream delivery between ASIC's
Datastream server host and a customer's host.

Data Communications Specification

Version 1.0

ASIC

Page
4

3.5 Failover Facilities

Failover facilities are being provided in the form of duplicate Frame Relay B
-
ends.
This means that ASIC will provide duplicate access se
rvices to the ASIC mainframe,
accessed through the primary and secondary B
-
ends.



the “primary” service, available since the inception of the Datastream service in
1996. This provides access as described in section 3.3 to the Datastream primary
application

server.



the ”secondary” service, implemented in August 2000 to duplicate ASIC access
services thus allowing customers to implement failover capabilities. This also
provides access as described in section 3.3 but uses duplicate ASIC equipment
such as firew
all, routers, communications links and Datastream application server.
This secondary service will provide identical functionality for ASIC information
products as the primary service. However, the secondary service does not provide
routing capabilities to

access State business names applications.

Customers who wish to take advantage of the failover capabilities provided by the
duplicate ASIC access services should acquire a link to the both the primary and
secondary services, and implement their own switch
ing service. This could be from a
single A
-
end, or from duplicate A
-
ends. Customers are encouraged to acquire
duplicate A
-
ends because this will maximise the channel duplication and hence
failover capability. Switching of traffic between primary and second
ary access service
must be managed by customer systems.

The primary B
-
end will permit routing to state business names sites. The secondary
line will not. ASIC does not provide failover facilities on the state business names
routing service.

New brokers mus
t connect initially to the primary B
-
end and may choose to have an
additional connection to the secondary service,


Passwords are replicated between the primary and secondary Datastream application
servers within 1 minute. Customers are advised to not swit
ch between lines for 1
minute after having changed their password.
Data Communications Specification

Version 1.0

ASIC

Page
5

4. Customer Connection Pre
-
requisites

Before a customer can be connected, information must be exchanged with the ASIC.
Customers must supply the ASIC with the information described in "Cust
omer
Information", and the ASIC must supply the customer with the information described
in "ASIC Information"

4.1 Customer Information for ASIC

Item

Description

Customer comms contact

Name and telephone number of person responsible
for communications link

setup only. Once the link
has been established and is stable, maintenance will
be an operational issue addressed elsewhere.

Customer host IP address
and subnet netmask

The IP address of the customer's host/hosts. This is
required so that end
-
to
-
end stati
c routing can be set
up. The netmask for the subnet containing the host is
also required.

CIR and DLCI for the
Frame Relay PVC

The customer must inform ASIC about the following
Frame Relay details:

1.) DLCI number assigned by Telstra to the ASIC end
of t
he Frame Relay PVC.

2.) CIR value assigned to the PVC by the customer

Customer
-
assigned subnet
netmask and IP addresses
for link

The customer must assign a subnet and IP addresses
to the Frame Relay PVC link. The netmask for this
subnet is also required.

When complete, this
information must be sent to ASIC by fax, mail or
email.

4.2 ASIC Information for Customer

Communications
-
related information provided is:

Item

Description

Datastream server IP
address and subnet
netmask

The IP address of the Datastre
am server machine and
the netmask for the subnet containing the Datastream
server.


Additional application
-
related information is required: port numbers, userids and
passwords, but these are not communications issues, and will be supplied by the
Datastrea
m application support staff.


Data Communications Specification

Version 1.0

ASIC

Page
6

5.

Connection Diagram

Data Communications Specification

Version 1.0

ASIC

Page
7

Appendix A
-

Amendment History


Version 00.30

Released to brokers on 11/11/96. This version is a firm draft for the implementation of
the production pilot on 1 January 1997.


Ver
sion 1.00

Released to brokers on 16th December 1996

Added section 4, Customer Connection Pre
-
requisites, to more clearly specify what
information must be exchanged before a customer can be connected.


Version 1.01

Released to brokers on 4th March, 1997

4.1


add extra items

5.0

minor changes to connection diagram


Version 1.02

Released to brokers on 4th April, 1997

2.

add additional contact information, update addresses


Version 1.03

Released to brokers on 12th January 1998

2.

Altered ASIC comms contact
details and Telstra contact details

4.1

Added additional details


Version 1.04

Released to brokers on 1st August 1998

All

Alter naming from "ASC" to "ASIC"

2.

Altered "B
-
end" details to reflect relocation of ASIC equipment

Altered ASIC comms contact deta
ils

5.

Updated connection diagram


Version 1.05

Released to brokers7
th

September 2000

1.

Add details of secondary service, to provide failover facilities.

2.

Update contact details.