0086 - IP Connection Congested

This message indicates that an IP application socket or association is congested. The card's memory has been exceeded, so the card cannot process all of the MSUs being received.

In addition to the basic number of MSUs the card is rated to handle, other factors that affect the card's capacity such as the number of connections sharing the card. Network conditions can cause extra memory to be consumed as the card stores MSUs while waiting for acknowledgments from the far end.

Note:

IP Connection UAMs 0086 (Congested), 0535 (Restricted), and 0536 (Excess Retransmits) conditions can occur simultaneously. However, only one alarm per device can be displayed at a time. If two or more are present, the display of these alarms is prioritized as follows:

1. 0086 - IP Connection Congested (MSUs are being dropped)
2. 0536 - IP Connection Excess Retransmits (MSUs may be dropped. The EAGLE 5 ISS sustains a certain rate of dropped MSUs without triggering this alarm, then issues UIM 0536 when that rate is exceeded.)
3. 0535 - IP Connection Restricted (MSUs are being transmitted at reduced rate. A path of a multi-homed association has failed. )

Example

RLGHNCXA03W 99-04-10 16:28:08 EST EAGLE5 41.1.0
0046.0086  * IP7CONN LONGSOCKETNAME1 IP Connection Congested

Alarm Level: Minor

Recovery

1. Use your company procedures to check the network.
2. Reports on status can be obtained for each SIGTRAN card with the following commands:
   • rept-stat-applsock displays the status of the IP application sockets.
   • rept-stat-ls displays the status of the MTP linksets.
   • rept-stat-slk displays the status of the MTP signaling links.
   • pass:loc=xxxx:cmd=”sockrtt” displays the application socket statistical data.
   • pass:loc=xxxx:cmd=”netstat -i” displays TCP/IP network statistical information for all interfaces.
   • pass:loc=xxxx:cmd=”netstat -p tcp” displays TCP/IP network statistical information for the transmission control protocol.
   • pass:loc=xxxx:cmd=”netstat -p udp” displays TCP/IP network statistical information for the user datagram protocol.
   • pass:loc=xxxx:cmd=”netstat -p ip” displays TCP/IP network statistical information for the internet protocol.
   • pass:loc=xxxx:cmd=”netstat -p icmp” displays TCP/IP network statistical information for the internet control message protocol.
   • pass:loc=xxxx:cmd=”netstat -m” displays TCP/IP network statistical information for buffer pools.
   • pass:loc=xxxxx:cmd="sctp -a xxxxx" displays SS7-over IP (SIGTRAN) troubleshooting information.
     For example, to see the information for the location 1301 and the entity ipl1301a, enter

     pass:loc=1301:cmd="sctp -a ipl1301a"

3. Is SCTP buffering set correctly for network RTT?

   rtrv-assoc

   assocrtt pass command

   sctp pass command

4. Is IPTPS set correctly for IPGWx?

   rept-stat-iptps

   rtrv-ls

5. Is an interface set to half-duplex somewhere in the path to the far end, causing excessive retransmissions?

   rtrv-ip-lnk

   sctp pass command

6. Contact My Oracle Support (MOS).