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=== '''''Applies to version(s): 2.9, 2.10, 3.0, 3.2''''' ===
{{DISPLAYTITLE:Creating the SCTP Configuration}}
Stream Control Transmission Protocol (SCTP), a Transport Layer protocol, ensures a reliable in-sequence transport of messages.
 
To edit your SCTP configuration:

1- Select '''SCTP''' from the navigation panel

[[Image:CreateSctp_0.png]]


2- Configure the SCTP service

* Make sure the box labeled '''Enabled''' is '''checked'''
* Enter a '''name''' for the SCTP service
* Select an appropriate '''service type''':
** [[RAW IP|RAW_IP]]
** [[UDP IP|UDP]]
* Click '''Create'''

[[Image:CreateSctp_1.png]]


3- Verify that the '''"Sctp Cfg was successfully created"''' message appears

[[Image:CreateSctp_2.png]]


<div class="mw-collapsible mw-collapsed" data-collapsetext="Northbound Interface" data-expandtext="Northbound Interface" style="width: 400px;">

'''Path'''
<pre>
/configurations/@[configuration_name]/hardware_units/@[hardware_name]/sctp_stacks/@[sctp_stack]
</pre>

'''Parameters (text)'''
<pre>
/configurations/@[configuration_name]/hardware_units/@[hardware_name]/sctp_stacks/@[sctp_stack]
enabled             = false
name                = "@[sctp_stack]"
sctp_service_type   = "RAW_IP"
udp_tunneling_port  = 9899

/configurations/@[configuration_name]/hardware_units/@[hardware_name]/sctp_stacks/@[sctp_stack]/advanced_parameters
accept_add_life_time = true
domain_name          = ""
initial_window_space = 32768
max_asso_retransmits = 3
max_init_retransmits = 8
max_path_retransmits = 2
md5_expiry_timer     = "5 seconds"
mtu_size             = 1024
send_init_with_ip    = false
send_shutdown        = false
use_adler32_checksum = false

/configurations/@[configuration_name]/hardware_units/@[hardware_name]/sctp_stacks/@[sctp_stack]/dns_cfg
address         = ""
dns_port        = 53
enabled         = false
max_query_retry = 3
query_timer     = "20 seconds"
</pre>

'''Parameters (json)'''
<pre>
{
  "advanced_parameters" : {
    "accept_add_life_time" : true,
    "domain_name" : "",
    "initial_window_space" : 32768,
    "max_asso_retransmits" : 3,
    "max_init_retransmits" : 8,
    "max_path_retransmits" : 2,
    "md5_expiry_timer" : "5 seconds",
    "mtu_size" : 1024,
    "send_init_with_ip" : false,
    "send_shutdown" : false,
    "use_adler32_checksum" : false
  },
  "dns_cfg" : {
    "address" : "",
    "dns_port" : 53,
    "enabled" : false,
    "max_query_retry" : 3,
    "query_timer" : "20 seconds"
  },
  "enabled" : false,
  "name" : "@[sctp_stack]",
  "sctp_service_type" : "RAW_IP",
  "udp_tunneling_port" : 9899
}
</pre>
</div>


==List of Parameter==

* [[Parameter: Name|Name]]
* [[Parameter: Service Type|Service Type]]

'''DNS Parameters'''
* [[Parameter: Enabled|Enabled]]
* [[Parameter: Server_DNS_Port|DNS Port]]
* [[Parameter: Query Timer|Query Timer]]
* [[Parameter: Query Retry Count|Max Query Retry]]
* [[Parameter: Server Address|Server Address]]

'''Advanced Parameters'''
* [[Parameter: Send SHUTDOWN before rebooting|Send SHUTDOWN before rebooting]]
* [[Parameter: Send INIT with IP address parameter|Send INIT with IP address parameter]]
* [[Parameter: Use adler32 checksum|Use adler32 checksum]]
* [[Parameter: Initial window space|Initial window space]]
* [[Parameter: MTU size|MTU size]]
* [[Parameter: Max INIT retransmissions|Max INIT retransmissions]]
* [[Parameter: Max ASSO retransmissions|Max ASSO retransmissions]]
* [[Parameter: Max PATH retransmissions|Max PATH retransmissions]]
* [[Parameter: Life time of MD5 keys|Life time of MD5 keys]]
* [[Parameter: Accept additional lifetime|Accept additional lifetime]]
* [[Parameter: Domain name|Domain name]]