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How to configure fiber uplink ports in Dlink DGS 3426P?

Posted on 2010-01-12
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Last Modified: 2012-05-08
Hello EEs,

I have two Dlink DGS 3426P switchs located in 3rd & 4 Floor with 1-1 FSP fiber modules installed.
I have connected both end each other in both switch.
Kindly adivce how can i configure these fiber modules as uplink ports.
& is there any extra configuration i need to do for my IP phone ports which should run PoE.
Awaiting for your earlier reply,
Thanks,
DXB
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Question by:dxbdxb2009
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Expert Comment

by:from_exp
ID: 26305229
hi!
are these ports up? (I want to check, that you have interconnected both switches correctly)
sfp ports are combo ports in these dlinks, so it means, that you have to have copper port 21 empty in order to use SFP port 1

as for uplinks. you have to configure ports 21 tagged for all vlans you want to pass between switches.
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Author Comment

by:dxbdxb2009
ID: 26310922
"you have to have copper port 21 empty in order to use SFP port 1" meaning not to put any RJ45 cable in both of these switchs?
Cant i insert uplink cable into any port in the switch or it is nessasery to put into port 21 in both switch?
Awiting for your earlier reply.
Thanks,
DXB
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LVL 21

Expert Comment

by:from_exp
ID: 26311580
combo port means that a port is being shared by two media - rj45 and fiber. so fiber port 1 is copper port 21, fiber 2 = copper 22, fiber 3 = copper 23 and fiber 4 corresponds to rj45 port 24.
if you are using rj45 for uplink, then you can use any port as uplink.
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Author Comment

by:dxbdxb2009
ID: 26322708
I have check uplink with 8,9,10 meaning any one of switch#1 & inserted into any port into switch #2 i check uplink was working fine & it was it work with the fiber also i just connected the fiber (sfp) b/w both switchs it works fine even i did not have to make port 21 empty as you suggested.
what caused you told me to do.
Kindly explain.
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Accepted Solution

by:
from_exp earned 2000 total points
ID: 26338436
nice, that you have a working solution.
as for combo ports - it is just the way they are designed to perform - they are combo, so internally there is only one port, but externally it has two medias - copper and fiber and only one of them can be used at a time.
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Author Comment

by:dxbdxb2009
ID: 26378208
from_exp: Sorry for replying you late,

Do you mean I can not use port 21 to connect my lan pc along when i am using FiberPort#1?

Kindly explain in dept.

Many thanks!

DXB

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LVL 21

Expert Comment

by:from_exp
ID: 26378313
yep, exactly!
internally there is only one switch port for each combo port. (take a look yourself at vlan section for example)
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Author Closing Comment

by:dxbdxb2009
ID: 31676509
Thanks from_exp.

Pls exapt 500 pts & if you can kindly answer me for one of my question here:-
http://www.experts-exchange.com/Hardware/Networking_Hardware/Routers/Q_25073024.html
Best regards,
DXB
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