Arris C4 - DCC Failed | docsis.org

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Arris C4 - DCC Failed

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alex39x
Arris C4 - DCC Failed

we have CMTS Arris C4 (2x16D 6x12U). frequency distribution, fiber-node and supervision:

show interface cable-mac 8 brief

Cable-mac 8
=============
Cable Oper Mod Power Spare LBal
DS Port Mac Conn State Annex Freq(Hz) Type (.1dBmV) Group Group
15/12 8 3 IS A(EU) 290000000 q256 460 - 75558912
15/13 8 3 IS A(EU) 282000000 q256 460 - 75558912
15/14 8 3 IS A(EU) 274000000 q256 460 - 75558912
15/15 8 3 IS A(EU) 266000000 q256 460 - 75558912


Cable Oper Chan Channel Mini Mod Power Spare LBal
US PORT Mac Conn State Type Freq(Hz) Width Slot Prof (dBmV) Group Group
5/2.0 8 1 IS atdma 25000000 3200000 4 16 0 - 75558912
5/3.0 8 1 IS atdma 32500000 3200000 1 16 0 - 75558912

show cable fiber-node cable-mac 8

Cable mDSsg/
Fiber Node MAC mCMsg mUSsg Ports
---------------- ----- ----- ------ --------------------
FN32 8 30 D1 15/12 15/13 15/14 15/15
FN32 8 30 U1 5/2.0 5/3.0

show cable supervision cable-mac 8

MAC US DS Method
----- ------- ----- -----------
8 5/2.0 15/12 Provisioned
8 5/2.0 15/13 Provisioned
8 5/2.0 15/14 Provisioned
8 5/2.0 15/15 Provisioned
8 5/2.1 15/12 Provisioned
8 5/2.1 15/13 Provisioned
8 5/2.1 15/14 Provisioned
8 5/2.1 15/15 Provisioned
8 5/3.0 15/12 Provisioned
8 5/3.0 15/13 Provisioned
8 5/3.0 15/14 Provisioned
8 5/3.0 15/15 Provisioned
8 5/3.1 15/12 Provisioned
8 5/3.1 15/13 Provisioned
8 5/3.1 15/14 Provisioned
8 5/3.1 15/15 Provisioned

when moving CM from 15/12 on 15/15 we have a problem:

show cable modem 0015.a370.ebd3

Interface DOC
(DS-US) Mac Bonded State SIS Qos CPE MAC address IP Address
------------- ----- ------ ----------- --- ------------- --- --------------- ---------------------------------------
15/12-5/3 8 Operational 2.0 0/0 0 0015.a370.ebd3 10.0.130.100

configure cable modem move 0015.a370.ebd3 cable-upstream 5/3 cable-downstream 15/15 method direct

15/12- 5/3.0 CM 0015.a370.ebd3 (Arris) D2.0 State=Operational D1.1/atdma PrimSID=5497
Cable-Mac= 8, mCMsg = 30 mDSsg = 1 mUSsg = 1, RCS=0x00000001 TCS=0x00000004
Received dcc( 0015.a370.ebd3, 393777, 1056384, 4=none)
Warning - move continues to operate after prompt returns. Errors may show up to 2 minutes after command is run.

show cable modem 0015.a370.ebd3

Interface DOC
(DS-US) Mac Bonded State SIS Qos CPE MAC address IP Address
------------- ----- ------ ----------- --- ------------- --- --------------- ---------------------------------------
15/15-5/3 8 Offline 2.0 0 0015.a370.ebd3

in log C4:
10:05:15 05 notc: CM 00:15:a3:70:eb:d3 DCC Failed from US 5/3 DS 15/12 to US 5/2 DS 15/15 .
10:05:15 05 notc: CM 00:15:a3:70:eb:d3 (Arris) reset:SM_DCC_FAIL_ABORT_LOCAL uchan:3 SID:5625 State:Operational uptime:1117 sec card:5 CM cfg file:10_0_130_100.bin

in log CM:
"DCC-ACK not received"
"No Ranging Response received - T3 time-out"
"Received Response to Broadcast Maintenance Request, but no Unicast Maintenance opportunities received - T4 timeout"
"DCC aborted unable to communicate on new upstream channel"

in load-balance failed-list:
show cable load-balance failed-list | include 0015.a370.ebd3

0015.a370.ebd3 (Arris) DS-Dyn 15/12 5/2.0 15/15 5/2.0 1 2013 11 27 9:45:48

if used method ranging - CM jump but with delay.

when moving CM from 15/12 on 15/13 - all ok.
configure cable modem move 0015.a370.ebd3 cable-upstream 5/3 cable-downstream 15/13 method direct

15/12- 5/3.0 CM 0015.a370.ebd3 (Arris) D2.0 State=Operational D1.1/atdma PrimSID=6318
Cable-Mac= 8, mCMsg = 30 mDSsg = 1 mUSsg = 1, RCS=0x00000001 TCS=0x00000004
Received dcc( 0015.a370.ebd3, 393777, 1056368, 4=none)
Warning - move continues to operate after prompt returns. Errors may show up to 2 minutes after command is run.

show cable modem 0015.a370.ebd3

Interface DOC
(DS-US) Mac Bonded State SIS Qos CPE MAC address IP Address
------------- ----- ------ ----------- --- ------------- --- --------------- ---------------------------------------
15/13-5/3 8 Operational 2.0 0/0 0 0015.a370.ebd3 10.0.130.100

physical interface information on 15/15 15/13 DS:

Interface USPwr USSNR uReflec Timing USPwr DSPwr DSSNR uReflec Timing Last
(DS-US) (dBmV) (db) (dBc) Offset (dBmV) (dBmV) (db) (dBc) Offset Polled MAC address
------------- ------ ------ ------- -------- ------ ------ ------ ------- ------ ------ --------------
15/13-5/3 -0.5 33.0 0 459 43.0 -0.2 34.8 17 459.00 00:00 0015.a370.ebd3 (Arris)
15/15-5/3 -0.4 33.1 0 456 43.0 -0.6 35.1 24 456.00 00:00 0015.a370.ebd3 (Arris)

this all cable-mac.
please help.