Card in Service showing disconnected from both Buses but signaling link active on it

Asset ID:	1-72-2220270.1
Update Date:	2017-03-14
Keywords:

Solution Type Problem Resolution Sure

Solution 2220270.1 : Card in Service showing disconnected from both Buses but signaling link active on it

Applies to:

Oracle Communications EAGLE (Hardware) - Version EAGLE 46.3 and later
Information in this document applies to any platform.

Symptoms

On : EAGLE 46.3 version, Eagle 5 - STP (Production)

Problem Details:
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Card in Service showing disconnected from both Buses with signaling link active and carrying traffic on it

ERROR:
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The capture below shows the card in service normal, showing disconnected from both buses but the link on it is active.

xxxx 16-12-22 18:46:48 CST EAGLE 46.3.0.0.1-68.27.0
CARD VERSION TYPE GPL PST SST AST
1306 138-027-000 LIMATM ATMHC IS-NR Active -----
ALARM STATUS = No Alarms.
BLIXP GPL version = 138-022-000
IMT BUS A = Disc
IMT BUS B = Disc
CLOCK A = Idle
CLOCK B = Active
CLOCK I = Idle
HS CLOCK A = Active
HS CLOCK B = Idle
HS CLOCK I = Idle
MBD BIP STATUS = Valid
MOTHER BOARD ID = EPM A
DBD STATUS = Valid
DBD TYPE = ATM
DBD MEMORY SIZE = 512M
HW VERIFICATION CODE = ----
CURRENT TEMPERATURE = 30C ( 86F)
PEAK TEMPERATURE: = 30C ( 86F) [16-12-22 17:32]
SIGNALING LINK STATUS
SLK PST LS CLLI
A IS-NR xx xxxxx
APPLICATION SERVICING
MFC MFC
SNM REQ STATUS = 24 hr: G--, 5 min: ---
SLAN REQ STATUS = 24 hr: ---, 5 min: ---
SCCP REQ STATUS = 24 hr: G--, 5 min: G--
INM REQ STATUS = 24 hr: GD-, 5 min: ---
MTP3 REQ STATUS = 24 hr: GD-, 5 min: G--

Cause

This is related to Bug 24837179 caused due to Overload (high level of traffic) on a network card can trigger a local RX FIFO Full condition in the card's IMT bus. The condition may be interpreted by the EAGLE OAM as the card being disconnected from that IMT bus. The card may continue to report as being disconnected from that IMT bus even after the card overload condition abates.

Solution

The permanent fix for this is target for R46.5.

WORK AROUND: To clear the stuck condition issue the commands:

"disc-imt:bus=<a | b>:loc=<card slot>" then "conn-imt:bus=<a | b>:loc=<card slot>".
init-card:loc=xxx

References

<BUG:24837179> - SR: EPMA SM4GB SCCP CARD IMT BUS=B DISCONNECTED WITH OVERDRIVE GTT TRAFFIC

Attachments

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