SG500 and native stacking doubt.

Hello,
I have 8 sg500 in native stacking using optical fiber:
Operational Status
Stack Mode: Native Stacking
Stack Topology: Ring
System Mode: L3
Stack Master: Unit 1
Master Election Status: Automatic Master Election
Administrative Status
System Mode L3 Mode
Queues Mode 4 Queues
Stack Administrative Settings Table
1 SG500-52 S3 1G Unit3 S4 1G Unit2
2 SG500-28 S3 1G Unit1 S4 1G Unit8
3 SG500-52 S3 1G Unit4 S4 1G Unit1
4 SG500-28 S3 1G Unit3 S4 1G Unit5
5 SG500-28 S3 1G Unit6 S4 1G Unit4
6 SG500-52 S3 1G Unit5 S4 1G Unit7
7 SG500-52 S3 1G Unit6 S4 1G Unit8
8 SG500-28 S3 1G Unit7 S4 1G Unit2
But, fiber connection between 6 and 7 is in standby ( led not blibking, green all time ).
is this normal behaviour???
Why does work like others fiber connections?
best regards.

Software Information
Firmware Version (Active Image): 1.3.7.18
Firmware MD5 Checksum (Active Image): 595c976a2f097c197111df59cec078d9
Firmware Version (Non-active): 1.3.7.18
Firmware MD5 Checksum (Non-active): 595c976a2f097c197111df59cec078d9
Boot Version: 1.3.7.01
Boot MD5 Checksum: 0ac608b735909d9d101399216c4eab22
Locale: en-US
Language Version: 1.3.7.18
Language MD5 Checksum: N/A

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>
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Please check there is no firewall exist:
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I am trying to install abap stach and java stack together.
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I tried SP09 and since it didnt work Sp07 also since I had it with me downloaded before.
Any help ??? Got stuck
I need to install together to practice webdynpro...
E:\NW2004sSP7_Preview\SAP_NetWeaver_2004s_SR_1_Installation_Master_DVD__ID__NW05SR1_IM1\IM_WINDOWS_I386\NW04S\WEBAS\ADA\control.xml
George
INFO 2006-11-30 15:10:12
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i am now confused about these two stacks: Java Stack and ABAP Stack.
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Hi,
1. where are these objects stored in? Java or ABAP stack?
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