D-Link DXS-3600 Series Reference Manual page 89

DXS-3600 Series Layer 3 Managed 10Gigabit Ethernet Switch Web UI Reference Guide

It is connected to the CS through the CS management VLAN.
3. 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 of the Switch 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:
•
Each device begins in a Candidate state.
•
A CS must change its role to CaS and then to MS, to become a MS of a SIM group. Thus, the CS
cannot directly be converted to a MS.
•
The user can manually configure a CS to become a CaS.
•
A MS can become a CaS by:

Being configured as a CaS through the CS.

If report packets from the CS to the MS time out.
•
The user can manually configure a CaS to become a CS
•
The CaS can be configured through the CS to become a MS.
After configuring one switch to operate as the CS of a SIM group, additional DXS-3600 Series switches
may join the group by manually configuring the Switch to be a MS. The CS will then serve as the in band
entry point for access to the MS. The CS's IP address will become the path to all MS's of the group and
the CS's Administrator's password, and/or authentication will control access to all MS's of the SIM group.
With SIM enabled, the applications in the CS will redirect the packet instead of executing the packets.
The applications will decode the packet from the administrator, modify some data, and then send it to the
MS. After execution, the CS may receive a response packet from the MS, which it will encode and send it
back to the administrator.
When a CaS becomes a MS, it automatically becomes a member of the first SNMP community (includes
read/write and read only) to which the CS belongs. However, if a MS has its own IP address, it can
belong to SNMP communities to which other switches in the group, including the CS, do not belong.
Upgrade to v1.61
To better improve SIM management, the DXS-3600 Series switches have been upgraded to version 1.61
in this release. Many improvements have been made, including the Commander Switch (CS) now has the
capability to automatically rediscover member switches that have left the SIM group, either through a
reboot or web malfunction. This feature is accomplished through the use of Discover packets and
Maintenance packets that previously set SIM members will emit after a reboot. Once a MS has had its
MAC address and password saved to the CS's database, if a reboot occurs in the MS, the CS will keep
this MS information in its database and when a MS has been rediscovered, it will add the MS back into
the SIM tree automatically. No configuration will be necessary to rediscover these switches.
There are some instances where pre-saved MS switches cannot be rediscovered. For example, if the
Switch is still powered down, if it has become the member of another group, or if it has been configured to
be a Commander Switch, the rediscovery process cannot occur.
The topology map now includes new features for connections that are a member of a port trunking group.
It will display the speed and number of Ethernet connections creating this port trunk group, as shown in
the adjacent picture.
This version will support switch upload and downloads for firmware, configuration files and log files, as
follows:
•
Firmware - The switch now supports MS firmware downloads from a TFTP server.
•
Configuration Files - This switch now supports downloading and uploading of configuration files
both to (for configuration restoration) and from (for configuration backup) MS's, using a TFTP server.
•
Log - The Switch now supports uploading MS log files to a TFTP server.
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