What Is The Reason Of The Loss Of Both IMT Buses ?

Asset ID:	1-72-2192815.1
Update Date:	2016-10-19
Keywords:

Solution Type Problem Resolution Sure

Solution 2192815.1 : What Is The Reason Of The Loss Of Both IMT Buses ?

Applies to:

Oracle Communications EAGLE (Software) - Version EAGLE 3x.x and later
Information in this document applies to any platform.

Symptoms

The customer could not log on on the Eagle and all IP links were down.
TDM links were working fine
The issue appeared twice.
For the first incidence, the issue restored on its own. For the second incidence the customer has replaced the HIPR2 at 3210, HCMIM at 1211, 4201

Cause

Some cards were rebooting regularly and could introduce noise on the IMT bus so that the HIPR2 cards rebooted, leading to the loss of the IMT buses.

- 2 x cards in particular were regularly rebooting : the MIM cards 1211 and 4201.
- Both cards have been replaced and since this time both IMT buses are stables.

Solution

1. Two STC cards were still generating important errors on the IMT bus: slots 5217 and 5218 :
The cards (5217, 5218) have been removed from the system as there was no spare. After that, no more error on the IMT bus.

2. Two HIPR2 cards indicated some congestion, please check this UAM after both STC cards 5217 and 5218 are replaced :

eaglestp 16-07-29 20:23:03 IST EAGLE5 45.0.0-64.70.31
* 4361.0030 * CARD 1109 HIPR2 HIPR2 detected a minor Congested Second

eaglestp 16-07-29 23:15:22 IST EAGLE5 45.0.0-64.70.31
** 0782.0031 ** CARD 2310 HIPR2 HIPR2 detected a major Congested Second

eaglestp 16-07-29 23:15:50 IST EAGLE5 45.0.0-64.70.31
** 0906.0031 ** CARD 2310 HIPR2 HIPR2 detected a major Congested Second

3. After replacement of the MIM cards 1211 and 4201 violation error stopped on both IMT buses.

Statistics taken the 09/08/2016 and cumulated in 30 min:

Card: H'00ce slot 5217 Type=STC
Rx CRC Error 1836
Pri Ctrl Rx Err 704
Violation Error 5748

Card: H'00cf slot=5218 Type=STC
Rx CRC Error 6024
Pri Ctrl Rx Err 754
Violation Error 878

4. I would suggest to monitor every day for 2 weeks the obits to check the card 1217 is not rebooting with the module “pmtc_mgr.c” (rtrv-obit:loc=<active MASP>:num=10 to get the latest 10 x Obits)

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