5.1.7 Connection Configuration Sets

Connection Configuration Sets provide a way to tailor a VSTP Connection to account for the network quality of service and Remote Node (/vstp/remotenodes) requirements. A Connection Configuration Set is simply a collection of Connection (/vstp/connections) parameters that are grouped so the set can be easily assigned to multiple Connections.

Note:

The Connection Configuration Set named Default is always available. The default Connection Configuration Set can be modified, but it cannot be deleted.

Select the VSTP, and then Configuration, and then Connection Configuration Sets page. The page displays the fields on the Connection Configuration Sets View, Insert, and Edit pages.

Note:

Data Input Notes apply to the Insert and Edit pages only; the View page is read-only.

Table 5-7 Connection Configuration Sets Fields

Fields Description Data Input Notes
Connection Configuration Set Name

Name associated with Connection configuration set which must be unique within the VSTP site.

This is a mandatory field. The value must be unique, and cannot be edited after it is created.

Format: Input text box; Valid characters are alphanumeric and underscore. Must contain at least one alpha and must not start with a digit.

Range = A 32-character string.

Retransmission Initailization Timeout Expected average network roundtrip time in milliseconds.

This is a mandatory field.

Format: Input text box

Range = Typical value is 120; Maximum: 5000, Minimum: 10

Retransmission Minimum Timeout Minimum time (in milliseconds) to wait for an acknowledgment of a message sent.

This is a mandatory field.

Format: Input text box

Range = Typical value is 120; Maximum: 5000, Minimum: 10

Retransmission Maximum Timeout Maximum time (in milliseconds) to wait for an acknowledgment of a message sent.

This is a mandatory field.

Format: Input text box

Range = Typical value is 120; Maximum: 10000, Minimum: 10

Retransmission Maximum Timeout Initialization Maximum time (in milliseconds) to wait for an INIT to be acknowledged.

This is a mandatory field.

Format: Input text box

Range = Typical value is 120; Maximum: 10000, Minimum: 0

Retransmission Path Failure Number of consecutive unsuccessful message retransmisssions that causes a path of the SCTP Connection (/vstp/connections) to be marked as failed.

This is a mandatory field.

Format: Input text box

Range = Typical value is 3; Maximum: 10, Minimum: 1

Retransmission Association Failure Number of consecutive message retransmissions that cause an SCTP Connection (/vstp/connections) to be marked as failed.

This is a mandatory field.

Format: Input text box

Range = Typical value is 5; Maximum: 20, Minimum: 1

Retransmission Initialization Failure Number of consecutive retransmits for INIT and COOKIE-ECHO chunks that cause an SCTP Connection (/vstp/connections) to be marked as failed.

This is a mandatory field.

Format: Input text box

Range = Typical value is 8; Maximum: 20, Minimum: 1

SCTP Sack Delay The number of milliseconds to delay after receiving a data chunk and before sending a SACK. A non-zero value for sctpSackDelay gives the application time to bundle data chunks in the same SCTP message with the SACK, thereby reducing the number of packets in the network. Setting sctpSackDelay to zero disables this delay so that SACKs are sent as quickly as possible.

This is a mandatory field.

Format: Input text box

Range = Typical value is 10. Maximum: 200, Minimum: 1
SCTP Socket Send Size Socket send buffer size (in bytes) for outgoing SCTP messages.

This is a mandatory field.

Format: Input text box

Range = Typical value is1000000. Maximum: 5000000, Minimum: 8000

SCTP Socket Recieve Size Socket receive buffer size (in bytes) for incoming SCTP messages.

This is a mandatory field.

Format: Input text box

Range = Typical value is1000000. Maximum: 5000000, Minimum: 8000

SCTP Maximum Burst

*

Specifies the maximum burst of packets that can be emitted by this Connection (/vstp/connections).

This is a mandatory field.

Format: Input text box

Range = Typical value is 4. Maximum: 4, Minimum: 1

SCTP Number of Inbound Streams Maximum number of inbound SCTP streams supported locally by the SCTP Connection

This is a mandatory field.

Format: Input text box

Range = Typical value is 2. Maximum: 2, Minimum: 1

SCTP Number of Outbound Streams Maximum number of outbound SCTP streams supported locally by the SCTP Connection

This is a mandatory field.

Format: Input text box

Range = Typical value is 2. Maximum: 2, Minimum: 1

SCTP Maximum Segment Size The maximum size (in bytes) of any outgoing SCTP DATA chunk. If a message is larger than the sctpMaximumSegmentSize bytes, VSTP fragments the message into chunks not exceeding this size.

This is a mandatory field.

Format: Input text box

Range = Typical value is 0. Maximum: 1460, Minimum: 0

SCTP Fragmentation Enabled If true, a message exceeding the size of the path maximum transmission unit is fragmented and reassembled by the Remote Node (/vstp/remotenodes). Typical value is true.
SCTP Data Chunk Delivery Ordered If true, ordered delivery of the SCTP data chunk is performed; otherwise, delivery is unordered.

This is a mandatory field.

Typical value is false.
SCTP Heartbeat Interval The interval in milliseconds between sending SCTP heartbeat messages to a Remote Node (/vstp/remotenodes).

This is a mandatory field.

Format: Input text box

Range = Typical value is 1000. Maximum: 300000, Minimum: 0

SCTP Bundling Enabled This parameter is used for enabling or disabling SCTP Bundling. Range: Yes, No

Default value: Yes

You can perform add, edit, or delete tasks on VSTPConfigurationConnection Configuration Sets page.

Adding a Connection Configuration Set

Perform the following steps to configure a new Connection Configuration Set:

  1. Click Insert.

    Note:

    The new Connection Configuration Set must have a name that is unique across all Connection Configuration Sets at the SOAM. In addition, the Connection Configuration Set's IP Port combination must also be unique across all Connection Configuration Sets configured at the SOAM.
  2. Enter the applicable values.
  3. Click OK, Apply, or Cancel

Editing a Connection Configuration Set

Use this procedure to change the field values for a selected Connection Configuration Set. (The Connection Configuration Set Name field cannot be changed.):
  1. Select the Connection Configuration Set row to be edited.
  2. Click Edit
  3. Enter the updated values.
  4. Click OK, Apply, or Cancel

Deleting a Connection Configuration Set

Use the following procedure to delete a Connection Configuration Set.

Note:

If the Connection Configuration Set is a part of the configuration of one or more Connections (/vstp/connections), the Connection Configuration Set cannot be deleted.
  1. Select the Connection Configuration Set to be deleted.
  2. Click Delete.
  3. Click OK or Cancel.