I have two older switches and am trying to get a two port lag set up between the DLINK DGS 3650 (48 port) switch and and older CISCO 3550.  

I have tried using the following as reference material: http://support.dlink.co.id/docs/D-Link-Managed-Switches-Interoperating-with-Cisco-Switches.pdf


Cisco:  Port Gi 0/1-2 have been setup in trunking mode and have access to VLAN 1, VLAN 2, etc

DLINK:  Ports 47 and 48 are tagged ports and are grouped into a LAG.

Senario 1:  If I simple plug Gi 0/1-2 into 47 and 48, one port will come up and the other will be blocked, as one would expect

Senario 2:  If I place Gi 0/1-2 into a channel group they both get blocked on a protocol mismatch.

How do I start to trouble shoot this?


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I'll answer my own question.  When you do something silly, man up and own it.

My LAG Modes on the DLINK and the CISCO where not compatabile.  Once I set them properlly, the LAG came up instantly (page 11-12).

Dlink: Passive (is the default used on all our dlinks)

Cisco: Active

Answered 02/24/2014 by: DasShrubber
White Belt

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