DES-3550 Layer 2 Fast Ethernet Switch
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D-LINK SINGLE IP MANAGEMENT COMMANDS
Simply put, D-Link Single IP Management is a concept that will stack switches together over Ethernet instead of
using stacking ports or modules. Switches using D-Link Single IP Management (labeled here as SIM) must conform to the
following rules:
SIM is an optional feature on the Switch and can easily be enabled or disabled. SIM grouping has no effect on the
normal operation of the Switch in the user’s network.
There are three classifications for switches using SIM. The Commander Switch (CS), which is the master switch
of the group, Member Switch (MS), which is a switch that is recognized by the CS a member of a SIM group, and
a Candidate Switch (CaS), which is a switch that has a physical link to the SIM group but has not been recognized
by the CS as a member of the SIM group.
A SIM group can only have one Commander Switch (CS).
All switches in a particular SIM group must be in the same IP subnet (broadcast domain). Members of a SIM group
cannot cross a router.
A SIM group accepts up to 32 switches (numbered 0-31), including the Commander Switch (numbered 0).
There is no limit to the number of SIM groups in the same IP subnet (broadcast domain), however a single switch
can only belong to one group.
If multiple VLANs are configured, the SIM group will only utilize the default VLAN on any switch.
SIM allows intermediate devices that do not support SIM. This enables the user to manage a switch that is more
than one hop away from the CS.
The SIM group is a group of switches that are managed as a single entity. The DES-3550 may take on three different roles:
Commander Switch (CS) – This is a switch that has been manually configured as the controlling device for a group, and
takes on the following characteristics:
It has an IP Address.
It is not a Commander Switch or Member Switch of another Single IP group.
It is connected to the Member Switches through its management VLAN.
Member Switch (MS) – This is a switch that has joined a single IP group and is accessible from the CS, and it takes on
the following characteristics:
It is not a CS or MS of another IP group.
It is connected to the CS through the CS management VLAN.
Candidate Switch (CaS) – This is a switch that is ready to join a SIM group but is not yet a member of the SIM group.
The Candidate Switch may join the SIM group through an automatic function of the DES-3550, or by manually configuring it
to be a MS of a SIM group. A switch configured as a CaS is not a member of a SIM group and will take on the following
characteristics:
It is not a CS or MS of another Single IP group.
It is connected to the CS through the CS management VLAN.
The following rules also apply to the above roles:
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