I am facing a weird case of SG200. I had a 3Com5500 switch with Fibre module GBIC connecting to the SG200 (Cisco GBIC). The particular port is untagged to vlan 2 with DHCP. By this way, the SG200 supposed to obtain an IP if it is logically communicating with the 3Com5500 and the PC connecting to the SG200 should get an IP too.
However, the SG200 seems like no obtaining an IP (the System LED keep blinking) and the PC connected to it does not get an IP too. The port LED of both side is blinking, means that they are physically connected.
I had tried to connect the fiber cable with the same GBIC to another unmanaged switch (Cisco SG92) and it is working fine (PC connected to it can get an IP too) .
I tried to connect the 3Com5500 to the SG200 with UTP and it is working fine too.
Does anyone meet this issue before? Please advise. Thanks!!
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