This is a high-level description of the usual SGC configuration procedure listing the commands involved for each of the three layers:

It is up to the user to provide the details required by the commands; links to the configuration reference material for each command have been provided to make this easier.

General configuration

Step

Operation

1

Set the cluster-wide SCCP variant.

Configure the SCCP variant to the required value. Supported variants are:

  • itu (default)

  • ansi

2

Set the cluster-wide local SS7 Point Code address.

Modify the sp attribute to the desired point code. The format depends on the value of the sccp-variant configuration parameter.

  • ITU: 14 bits

    • simple integer, such as 4106

    • 3bit-8bit-3bit format (3 most significant bits, 8 middle bits, 3 least significant bits) as decimal integer values, such as 2-1-2.

  • ANSI: 24 bits

    • simple integer, such as 34871. This simple integer is the network byte order integer derived from the ANSI MTP/M3UA transmission order of the network, cluster and member components. i.e. [00000000 NNNNNNNN CCCCCCCC MMMMMMMM]

    • 8bit-8bit-8bit format in Network-Cluster-Member order as decimal integer values, such as 3-125-44.

3

Create two new nodes for the cluster.

The oname node attribute must be equal to the ss7.instance property value of the SGC Stack instance that will act as that particular node.

SCCP configuration

Below are the steps for configuring outgoing and incoming GTs to be translated, and CPCs.

Note Configuring SCCP GT Translation and Concerned Point Codes is optional.

Outgoing GT

For each outgoing GT to be translated, repeat these steps:

Step

Operation

1

Create the GT definition for outbound use.

2

Create the address definition that should be the result of matching the previously defined GT.

Be sure that the gt attribute is equal to the oname of the outbound-gt definition from the previous step.

3

Optionally, as a result of matching a particular GT, modify the called address before sending.

After creating the replace-gt, be sure to modify the replace-gt attribute of the outbound-gtt created in the previous step

Incoming GT

For each incoming GT to be translated, repeat this step:

Step Operation

1

Create a GT and address definition (SSN) that should be the result of translation.

2

Create the GT definition for outbound use, making sure it matches the inbound GTT correctly.

3

Create the address definition that should be the result of matching the previously defined GT.

Be sure that the gt attribute is equal to the oname of the outbound-gt definition from the previous step.
Tip The second and third commands may look somewhat surprising, as they create an outbound GTT rule. SCCP’s service messages (UDTS and XUDTS) may be generated locally in response to traffic we are attempting to send, and these service messages are routed as outbound messages. It is safest to create outbound GTT rules mirroring your inbound GTT rules in case they are needed by your network configuration.

Concerned Point Code

For each remote signalling node that is concerned about local SSN availability, repeat this step:

Step Operation

1

Define the PC that should be notified about subsystem availability changes.

M3UA configuration

Below are instructions for configuring M3UA in AS, IPSP Client, and IPSP Server modes.

Tip
See Also

RFC 4666 section 4.3. AS and ASP/IPSP State Maintenance
Step Operation

1

If not done previously, define a local-endpoint for the existing node.

2

Define IPs for the local-endpoint.

3

If you are:

  • connecting to an SG, set the:

    • is-ipsp attribute to false,

    • conn_type attribute to CLIENT, and

    • state-maintenance-role to ACTIVE.

  • using IPSP mode as a client, set the:

    • is-ipsp attribute to true,

    • conn_type attribute to CLIENT, and

    • state-maintenance-role to ACTIVE.

  • using IPSP mode as a server, set the:

    • is-ipsp attribute to true,

    • conn_type attribute to SERVER, and

    • state-maintenance-role to PASSIVE.

4

Define one or more IP addresses for connection.

5

Define one or more Application Server (Routing Contexts).

Set the traffic-maintenance-role attribute to ACTIVE.

6

Define one or more Destination Point Codes that will be available for the AS.

7

Define one or more routes that associate previously created DPC(s) and AS(s).

8

Define one or more associations for AS(s) that are available through particular connection(s).

9

Enable the node, as, local-endpoint, and connection.
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