D-Link DES-3526 Product Manual - Page 252

xStack® DES-3500 Series Layer 2 Stackable Fast Ethernet Managed Switch User Manual 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 Commander state. • CS's must change their 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 DES-3500 Series switches may join the group either by an automatic method or 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 CS becomes a MS, it automatically becomes a member of the first SNMP community (include 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. The Upgrade to v1.6 To better improve SIM management, the xStack® DES-3500 Series switches have been upgraded to version 1.6 in this release. Many improvements have been made, including: 1. 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 Maintain 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. 2. 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. NOTE: For more details regarding improvements made in SIMv1.6, please refer to the D-Link Single IP Management White Paper located on the D-Link website. 3. This version will support multiple switch upload and downloads for firmware, configuration files and log files, as follows: Firmware - The switch now supports multiple MS firmware downloads from a TFTP server. Configuration Files - This switch now supports multiple 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 multiple MS log files to a TFTP server. 237