md110 Data link alarms

[netkoizmase]

I have MD110 connected to 2 cisco 2811 routers over 4*2B+D channels. I get CRC errors on Cisco BRI interfaces and this alarms on MD110:

303 DATA LINK ALARM
DATE TIME ALP NOIF UNIT EQU BRDID INF1 INF2
16DEC06 17:15:24 10 1 SLP60 001-1-70-02 58 2 13

303 DATA LINK ALARM
DATE TIME ALP NOIF UNIT EQU BRDID INF1 INF2
19DEC06 09:13:15 3 2 SLP60 001-1-70-04 58 3 13

303 DATA LINK ALARM
DATE TIME ALP NOIF UNIT EQU BRDID INF1 INF2
19DEC06 14:03:50 2 2 SLP60 001-1-70-06 58 4 13


if anyone have any idea what could this be please post.

THX

 

[netkoizmase]

I also get and this alarms:

CLASS: 0
269 DIGITAL TRUNK, LOSS OF FRAME SYNCHRONIZATION
DATE TIME ALP NOIF UNIT EQU BRDID INF1
15DEC06 11:39:24 4 1 SLP60 001-1-70-02 58 2
RDATE RTIME
15DEC06 14:31:56
269 DIGITAL TRUNK, LOSS OF FRAME SYNCHRONIZATION
DATE TIME ALP NOIF UNIT EQU BRDID INF1
15DEC06 11:39:24 5 1 SLP60 001-1-70-06 58 4
RDATE RTIME
15DEC06 14:31:56
269 DIGITAL TRUNK, LOSS OF FRAME SYNCHRONIZATION
DATE TIME ALP NOIF UNIT EQU BRDID INF1
15DEC06 11:39:25 6 1 SLP60 001-1-70-00 58 1
RDATE RTIME
15DEC06 14:31:58
269 DIGITAL TRUNK, LOSS OF FRAME SYNCHRONIZATION
DATE TIME ALP NOIF UNIT EQU BRDID INF1
15DEC06 11:39:25 7 1 SLP60 001-1-70-04 58 3
RDATE RTIME
15DEC06 14:31:58
303 DATA LINK ALARM
DATE TIME ALP NOIF UNIT EQU BRDID INF1 INF2
15DEC06 11:39:28 8 1 SLP60 001-1-70-02 58 2 0
RDATE RTIME
15DEC06 14:31:56
303 DATA LINK ALARM
DATE TIME ALP NOIF UNIT EQU BRDID INF1 INF2
15DEC06 11:39:29 9 1 SLP60 001-1-70-00 58 1 0
RDATE RTIME
15DEC06 14:31:58

 

[dstrang1]

The 303's are the D-channels for the ISDN trunks. It appears you have timing issues between the CISCO routers and your MD.If you can change the CISCO config to get them to derive timing from the BRI's, these alarms should disappear.

You should also check the event logs in the routers for the times listed in the class 0 alarms above.....there may be some other network-related anomalie contributing to this......could be a QoS issue on the network. Is this a new situation with existing circuits that had preveiously worked OK? Or are these newly installed and still in the conditoin of being "tuned in"?

Good luck,

Dave Strang