cellular-infrastructure
/
osmo-gsm-manuals
mirror of https://gerrit.osmocom.org/osmo-gsm-manuals
9
0
Fork 0
Code Releases Activity

sigtran: Document SCTP INIT VTY parameters 

Related: SYS#6558
Change-Id: I2a8c2b3708d72bf0974b17bf018f2c667ae6b824
This commit is contained in:
Pau Espin 2023-09-12 12:04:09 +02:00
parent 8ee1ca7084
commit 08b5ff7ebb
1 changed files with 43 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

43
common/chapters/sigtran.adoc
View File

@ -442,6 +442,49 @@ net.sctp.auth_enable=1
net.sctp.addip_enable=1
----
==== SCTP INIT Parameters
Several SCTP INIT parameters can be configured through VTY, which will be passed
to the Linux Kernel SCTP stack and used whenever an association is being
established.
On the client side (see <<sctp_role>>), the parameters are configured in the `asp` node:
----
cs7 instance 0
asp my-asp 2905 0 m3ua
sctp-role client
sctp-param init num-ostreams 250 <1>
sctp-param init max-instreams 300 <2>
sctp-param init max-attempts 3 <3>
sctp-param init timeout 10000 <4>
...
----
<1> The number of streams from the server to the client. This value is
transmitted during SCTP INIT ACK packet.
<2> Announce to the server that a maximum of up to 300 inbound SCTP streams are
supported. This value is transmitted during SCTP INIT packet.
<3> Initial SCTP handshake will be attempted 3 times before considering the
connection failed.
<4> Retransmit an SCTP INIT message after 10000 ms if no answer is received.
On the server side (see <<sctp_role>>), the parameters are configured in the `listen` node:
----
cs7 instance 0
asp my-asp 2905 0 m3ua
sctp-role server
listen m3ua 2905
sctp-param init num-ostreams 250 <1>
sctp-param init max-instreams 300 <2>
...
----
<1> Announce to the server that up to 250 outbound SCTP streams (server to
client) may be requested. This value is transmitted during SCTP INIT packet, and
should be equal or lower to the `max-instreams` value received from the client
during SCTP INIT packet.
<2> Announce to the server that a maximum of up to 300 inbound SCTP streams are
supported. This value is transmitted during SCTP INIT ACK packet.
[[sctp_role]]
==== SCTP role
The _SCTP role_ defines which of the two L4 protocol roles SCTP assumes: