Issue Description
T2000NMS version: T2000V2R4C01B01cSPC007
SCC version: 5.21.13.47P02
I had to configure the DCC bytes D1-D3 with IP protocol and D4-D12 with OSI protocol stack for DCN network of other vendor .As other vendor use OSI protocol stack with ''USER'' LAPD role for DCN network.Our OSN7500 system NE's connected to other vendor and they required DCN path through DCC bytes in our OSN7500 NE.I configured the D1-D3 bytes with IP protocol successfully.But when i tried to configure D4-D12 bytes with OSI protocol stack and with ''USER'' LAPD role, it showed an error of invalid parameters and didn't configure D4-D12 bytes as shown in attached picture.
Handling Process
I checked the DCC parameters of OSN7500 NE by using :cm-get-dccpara and the result was as follows.
ECC-CHAN-INFO
ALL-TOTAL ALL-FREE D3-TOTAL D3-USED D3-FREE D9-TOTAL D9-USED D9-FREE D12-TOTAL D12-USED D12-FREE
510 0 160 9 151 0 0 0 0 0 0
Total records :1
From above result i found that there was no D9 mode.
In order to resolve the problem i performed the following steps.
1- I checked the DCC parameters by using :cm-get-dccpara; command and found that there was no D9 mode.
2- I used :cm-set-chanmode, :cm-get-chanallocinfo and :cm-get-chanmode to add D9 mode and to get D9 mode information as follows.
CHAN-ALLOC-INFO
CHAN-MODE CHAN-WIDTH CHAN-NUM
1 3 160
2 9 40
2 3 40
3 32 4
3 12 4
3 9 26
3 3 26
As from above information i found that the 2 CHAN-MODE with CHAN-WIDTH of 9 and CHAN-NUM 4.
3- I set DCC parameters by using :cm-set-dccpara:40,40,0 command and then reset software of GSCC board.(40,40,0 are the CHAN-NUM as mentioned in 2 CHAN-MODE in above info)
4-After the above mentioned procedure i configured the D4-D12 bytes with OSI protocol stack and ''USER'' LAPD role and the problem resolved successfully.
Root Cause
T2000NMS version: T2000V2R4C01B01cSPC007
SCC version: 5.21.13.47P02
I had to configure the DCC bytes D1-D3 with IP protocol and D4-D12 with OSI protocol stack for DCN network of other vendor,.As other vendor use OSI protocol stack with ''USER'' LAPD role for DCN network.Our OSN7500 NE's are connected to other vendor and they required DCN path on DCC bytes in our OSN7500 NE.I configured the D1-D3 bytes with IP protocol successfully.But when i tried to configure D4-D12 bytes with OSI protocol stack and with ''USER'' LAPD role, it showed an error of invalid parameters and didn't configure D4-D12 bytes as shwon in attached picture.I checked the DCC parameters of OSN7500 NE by using :cm-get-dccpara and the result was as follows.
ECC-CHAN-INFO
ALL-TOTAL ALL-FREE D3-TOTAL D3-USED D3-FREE D9-TOTAL D9-USED D9-FREE D12-TOTAL D12-USED D12-FREE
510 0 160 9 151 0 0 0 0 0 0
Total records :1
From above result i found that there was no D9 mode and i should add D9 mode first for the configuration of D4-D12 bytes.
Suggestions
If the problem occur same as that,then first the D9 mode should be checked in the SDH NE and if not then add D9 mode first and then try to configure DCC bytes D4-D12 with OSI protocol stack.
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