DGS-3630 Series Layer 3 Stackable Managed Switch Hardware Installation Guide 
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Switch Stacking 
The DGS-3630 series supports stacking up to 9 switches together while being managed through one console 
connection on the master switch, or by an IP address through the MGMT port, or by multiple IP addresses through 
any of the RJ45/SFP/SFP+ ports using Telnet, the Web UI, and SNMP. This cost-effective switch provides an 
affordable solution for administrators to upgrade their networks using the combo RJ45/SFP+ ports to scale and stack 
the Switches. This increases overall reliability, serviceability, and availability. 
 
  Duplex Chain – The Duplex Chain topology stacks switches together in a chain-link format. Using this 
method, data transfer is only possible in one direction. If there is a break in the chain, then data transfer will 
be affected. 
  Duplex Ring – The Duplex Ring stacks switches in a ring or circle format where data can be transferred in 
two directions. This topology is very resilient due to the fact that, if there is a break in the ring, data can still be 
transferred through the stacking cables between switches in the stack using the alternate path. 
 
Switches in the series can be physically stacked using optical fiber cables connected to SFP+ transceivers, or Direct 
Attached Cables (DAC) with SFP+ connectors. Only the last 4 ports on the Switch can be used for physical stacking. 
 
Physical stacking needs to be enabled and can be configured to support either a 2-port or a 4-port stacking 
configuration. When the 2-port stacking configuration is used, a full-duplex speed of up to 40Gbps will be used 
between two switches. When the 4-port stacking configuration is used, a full-duplex speed of up to 80Gbps will be 
used between two switches.