be comprised of units that are located anywhere on
the network, minimizing the impact of any single point
of failure. Furthermore, multiple xStack switches can
be configured, monitored and maintained from any
workstation running a web browser through one unique
IP address. The stack is managed as a single object, with
all units identified by a single IP address. Using Tree View,
you can obtain an overview of the members of the stack
and a network topology showing the locations of the units
and their link information. This simple yet powerful web-
based management eliminates the need for you to install
expensive SNMP network management software. You
can add units to up to 32 switches per stack and are not
limited to any specific D-Link SIM model.
Voice and Video Applications
For today’s business, having voice, data and video on
the same network is common practice. This challenge is
met by the DGS-3400 Series, which supports 802.1p with
eight queues. The administrator can designate the priority
of the traffic based on a variety of means including IP
or MAC address, so that voice data is always clear and
jitter-free. Video traffic can also be assigned with the same
priority. In addition, the xStack switches provide IGMP
Snooping or MLD snooping, which allows the forwarding
of multicast packets such as streaming audio and video,
without increasing network broadcast congestion. By
snooping IGMP registration information within a frame, a
list of workstations who have joined the multicast group is
created. This list allows a switch to intelligently forward
packets to only the appropriate member workstations. In
conjunction with the 802.1Q VLANs the switches support,
Quality of Service and security can be achieved on a
network infused with data traffic.
For other multimedia-on-demand applications, such as
IPTV deployments, the xStack DGS-3400 Series provides
advanced features for easy video streaming management.
For example, the xStack family supports per port multicast
stream control, which allows a service provider to assign
limited multicast addresses per port. This means it can act
as a security control that pre-configures channels for each
subscriber on a port level to prevent unauthorized hosts
from receiving traffic for a multicast group they have not
joined. The xStack DGS-3400 Series also supports IGMP
multicast VLAN, which eliminates duplicate multicast
traffic being sent to clients in different VLANs, thus
removing bottlenecks in the uplink port.
Ease of Management
The xStack DGS-3400 Series supports SNMP v1/2c/3 so
traps can be set on abnormal events and information can
be polled to maximize the productivity of the network.
Other standard management features also include RMON
and IEEE 802.1D/w/s Spanning Tree. The user interface
options include an intuitive web-based browser graphic
interface or industry-standard CLI; either administration
traffic can be protected through SSL or SSH encryptions.
Technical Specifications
Model
DGS-3426P
DGS-3427
DGS-3450
Interface
Ports
24 10/100/1000BASE-TX
Auto-Negotiating, Auto-MDI/MDI-X
Ports with 802.3x Flow Control
24 10/100/1000BASE-TX
Auto-Negotiating, Auto-MDI/MDI-X
Ports with 802.3x Flow Control
48 10/100/1000BASE-TX
Auto-Negotiating, Auto-MDI/MDI-X
Ports with 802.3x Flow Control
Combo Ports
4 Combo SFP Slots, Media Support
Dependent On GBIC Transceiver
4 Combo SFP Slots, Media Support
Dependent On GBIC Transceiver
4 Combo SFP Slots, Media Support
Dependent On GBIC Transceiver
Open Slot for 10-Gigabit Uplink
Modules
2 Open Slots for 10-Gigabit Uplink
Modules
3 Open Slots for 10-Gigabit Uplink
Modules
2 Open Slots for 10-Gigabit Uplink
Modules
Diagnostic LEDs
Per Device: Power, Console, RPS
Per Gigabit Port: Link/Activity,
10/100Mbps or 1000Mbps Speed
Per Ethernet Port: Link/Activity, 10Mbps
or 100Mbps Speed
Per Device: Power, Console, RPS
Per Gigabit Port: Link/Activity,
10/100Mbps or 1000Mbps Speed
Per Ethernet Port: Link/Activity, 10Mbps
or 100Mbps Speed
Per Device: Power, Console, RPS
Per Gigabit Port: Link/Activity,
10/100Mbps or 1000Mbps Speed
Per Ethernet Port: Link/Activity, 10Mbps
or 100Mbps Speed
RS-232 Console Port
1
1
1
xStack
®
DGS-3400 Series (DGS-3426P, DGS-3427, and DGS-3450)
