D-Link DMS-3130-30TS Product Manual - Page 29

Switch Stacking, Duplex Chain, Duplex Ring, Stacking Limit

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DMS-3130 Series Layer 3 Stackable Managed Switch Hardware Installation Guide Figure 4-2 Connecting the Switch to another switch/hub Switch Stacking The DMS-3130 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 one of the ports using Telnet, the Web UI, and SNMP. This cost-effective switch provides an affordable solution for administrators to upgrade their networks using the SFP28 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 or Direct Attached Cables (DAC) connected to SFP28 transceivers. 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 through the 25G SFP28 ports, a full-duplex speed of up to 100 Gbps will be used between two switches. On the other hand, when the 4-port stacking configuration is used through the 25G SFP28 ports, a full-duplex speed of up to 200 Gbps will be used between two switches. • Stacking Limit - Physical stacking number in a stack is limited by the maximum stacking device number. In DMS-3130 series, the maximum stacking device number is 9. Note: Modules with 10G SFP+ transceivers such as 10GBASE-SR/10GBASE-LRM Multi-mode and 10GBASELR/10GBASE-ER/10GBASE-ZR Single-mode cannot be used for stacking. The figures below illustrate how switches can be stacked in a Duplex Chain formation using optical fiber cables connected to SFP28 transceivers or DAC with SFP28 connectors where the 2-port or 4-port stacking configuration is used. 29

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DMS-3130 Series Layer 3 Stackable Managed Switch Hardware Installation Guide
29
Figure 4-2 Connecting the Switch to another switch/hub
Switch Stacking
The DMS-3130 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 one of the ports using Telnet, the Web UI, and SNMP. This cost-effective switch provides an affordable solution
for administrators to upgrade their networks using the SFP28 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 or Direct Attached Cables (DAC) connected
to SFP28 transceivers. 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 through the 25G SFP28 ports, a full-duplex speed of up
to 100 Gbps will be used between two switches. On the other hand, when the
4-port
stacking configuration is used
through the 25G SFP28 ports, a full-duplex speed of up to 200 Gbps will be used between two switches.
•
Stacking Limit
– Physical stacking number in a stack is limited by the maximum stacking device number. In
DMS-3130 series, the maximum stacking device number is 9.
Note
: Modules with 10G SFP+ transceivers such as 10GBASE-SR/10GBASE-LRM Multi-mode and 10GBASE-
LR/10GBASE-ER/10GBASE-ZR Single-mode cannot be used for stacking.
The figures below illustrate how switches can be stacked in a
Duplex Chain
formation using optical fiber cables
connected to SFP28 transceivers or DAC with SFP28 connectors where the
2-port
or
4-port
stacking configuration is
used.