Specifications

D-Link xStack Switch Series: Meeting the Need at the Edge of the Network 15
D-Link Systems, Inc.
October 2004
D-Link xStack Technology Bi-directional Fail-Safe Stacking
Bi-directional fail-safe stack architecture. Stack Up to 12 units in a Ring topology
Stack up to 7 units in a Star topology.
Subsecond Failover in Ring-Stacking
Within microseconds of a breakage of one part of the path, all data is switched to the active half
of the bi-directional path. The switches continually monitor the stack ports for activity and
correct data transmission. If error conditions cross a certain threshold, or there is insufficient
electromagnetic contact of the cable with its port, the switch detecting this then sends a message
to its nearest neighbor opposite from the breakage. Both switches then divert all their traffic onto
the remaining good path.
Single Management IP Address
The stack receives a single IP address as a part of the initial configuration. After the stack IP
address is created, the physical switches linked to it become part of the master switch group.