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Cisco BTS 10200 Softswitch Troubleshooting Guide, Release 5.0.x
OL-8723-19
Chapter 10 Signaling Troubleshooting
Troubleshooting Signaling Alarms
Stream Control Transmission Protocol Association Failure—Signaling (109)
The Stream Control Transmission Protocol Association Failure alarm (major) indicates that the SCTP
association failed. This alarm indicates that the BTS 10200 is unable to communicate with an SGP at the
SCTP protocol level. The problem may be at the M3UA or SUA layer. The primary cause of the alarm
is that the Ethernet cables on the SGP are unplugged or severed. To correct the primary cause of the
alarm, plug the Ethernet cables in or fix the severed connection. The secondary cause of the alarm is that
the SGP is not operational. To correct the secondary cause of the alarm, check the SGP alarms to
determine why it is not operating properly. To troubleshoot the M3UA or the SUA layers, use the
following procedures.
Message Transfer Part 3 User Adapter Troubleshooting Procedure
Use the following steps to determine the source of the problem at the M3UA layer:
Step 1
Determine if the administrative state of the SCTP is correct.
a.
Type the following command at the BTS 10200 CLI prompt:
status sctp-assoc id=<sctp-assoc-name>
If the response displays ADMIN STATE ->ADMIN_OOS, the SCTP association has been taken
administratively out of service and needs to be put back in service.
b.
Enter the following command to put the SCTP association in service:
control sctp-assoc id=<sctp-assoc-name>; mode=forced; target-state=INS;
c.
If the administrative state is ADMIN_INS, determine if the association has been taken out of service
on the ITP. Log on to the ITP. If you are unable to log on to the ITP, proceed to Step 2.
d.
If you are able to log on to the ITP, check the state of the associated application service provider
(ASP) by entering the following command:
show cs7 asp
The following is an example of the output:
ASP Name AS Name State Type Rmt Port Remote IP Addr SCTP
------------ ------------ -------- ---- -------- --------------- ----------
hrn11asp hrn11bts shutdown M3UA 11146 10.0.5.13
e.
If the state of the ASP indicates shutdown, someone has administratively taken the association out
of service. Refer to the
Cisco ITP User’s Guide
, at the following universal resource locator (URL),
to put the ASP (SCTP association) back in service:
http://www.cisco.com/univercd/cc/td/doc/product/wireless/moblwrls/itp/23sw/index.htm
f.
If the state is down proceed to Step 2.
g.
If the state of the ASP is inactive, the ASP is probably on the standby BTS 10200. If the ASP on the
active BTS 10200 is inactive, proceed to Step 7.