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Extreme Networks D-Series D2
Gigabit Ethernet Workgroup L2 Switch with Policy Support

Extreme Networks D-Series D2

Sorry, this product is no longer available, please contact us for a replacement.



The Extreme Networks D2 is a high-performance Gigabit Ethernet workgroup switch with a high tolerance for environmental temperatures up to 140°F / 60°C. With fans that only operate at extreme temperatures, the D2's very quiet design makes it an ideal solution for classrooms and conference rooms, as well as warm locations with limited ventilation. By providing LEDs on the front, back, and top of the switch, the D2 offers very flexible mounting options (rack, wall, desktop, or undertabletop), including an integral Kensington lock and an optional lock box for secure mounting.

  • 12-port small form factor 10/100/1000 workgroup switch
  • Quiet design and flexible mounting options for placement in a classroom or a conference room
  • Temperature-tolerant design enables continuous operation in warm environments
  • High-availability design with redundant power (including PoE) assures reliable network operations
  • 24 Gbps capacity and 17.86 Mpps

Along with a switch capacity of 24 Gbps, the D2 provides 12 fixed 10/100/1000 Ethernet ports; two of these ports are combo ports and can be accessed via either 100Base-FX or 1 Gbps Small Form Factor Pluggable (SFP) connectors. In order to provide a reliable, high-availability network, both the standard and Power over Ethernet (PoE) D2 models support redundant, external power bricks as well as Link Aggregation Groups (LAGs) for scalable, redundant uplinks.

In conjunction with its non-blocking architecture, the D2's robust Quality of Service (QoS) features enable strong support for converged multimedia networks, including Voice over IP (VoIP), video, as well as all types of data-intensive applications. The D2's highly customizable Layer 2/3/4 packet classification capabilities together with its intelligent queuing mechanisms ensure that mission-critical applications receive prioritized access to network resources.

Making use of Extreme Networks' policy capabilities (included with every D2 after October 1st, 2011), a network administrator can define distinct roles or profiles that represent industry-specific operational groups such as a school or a business. Each defined role is granted individualized access to specific network services and applications (e.g., administrative staff, teacher, student, guest) and these access privileges remain associated with users as they move across both wired and wireless network access points. Users are authenticated via IEEE 802.1X, MAC address, or web authentication, and then assigned a pre-defined operational role ensuring that each user has access to appropriate information, thus aligning network resource utilization with business goals and priorities. In addition, administrators can easily transition from RFC 3580 and complex ACL deployments to the Extreme Networks role-based policy framework in a seamless fashion, without the need to make changes to their RADIUS infrastructure (e.g., adding filter-ID).

In order to sustain a secure, feature-rich and cost-effective network well into the future, the D2 comes with a lifetime warranty.



  • Business-oriented, policy-based security* by user, application, protocol, port, or VLAN
  • Multiple user authentication methods via IEEE 802.1X, Web portal, and/or MAC address
  • Full support, via optional policy license, for port-based policies (PC+Phone)
  • Acceptable use policy enforcement when deployed with Extreme Networks Network Management Suite (NMS)
  • Rapid detection, isolation and remediation of threats when deployed with Extreme Networks NMS and Intrusion Prevention System (IPS)
  • Proactive protection services:
    • MAC address lockdown / lockout
    • Worm & virus quarantine via optional policy license
    • Source port pairing
    • ARP broadcast protection
    • BPDU port protection
    • DHCP service protection


  • Aggregate capacity: D2 performs at wire speed per port and provides switching capacity up to 17.86 Mpps throughput and 24 Gbps bandwidth
  • Address table size: up to 16,000 addresses are supported
  • Hardware queues: 8 hardware queues per port are supported


  • Secure management: authenticated and encrypted SNMPv3 support in addition to SSHv2, Secure Copy, Secure FTP and SSL
  • Policy support: the D2 supports the creation of 100 unique policy rules and 10 unique masks per port
  • Port mirroring: mirrors ingress/egress traffic from switch port(s) to a local or remote device for further traffic analysis or compliance purposes
  • RMON: provides advanced monitoring and reporting capabilities for statistics, history, alarms, events, filter and packet capture. Note: packet capture is sampling only; packet capture/filter sampling is disabled by default and cannot be enabled on the same interface concurrently with port mirroring
  • IEEE 802.1AB Link Layer Discovery Protocol (LLDP): automated device discovery protocol for easy mapping by network management applications
  • Alias/node table: dynamically updated local directory of attached users and devices used to locate and resolve IP addresses to MAC addresses throughout the network


  • LLDP-MED (Media Endpoint Discovery): a standard extension of LLDP that stores values for parameters such as QoS and VLAN to automatically configure and provision network devices such as IP phones
  • IP multicast snooping (data-driven IGMP): automatically prevents flooding of IP multicast traffic


  • IEEE 802.3af Power over Ethernet: 100 watts of PoE power is available for distribution across all 12 10/100/1000 ports with the base PoE switch; a maximum of 15.4 W (Class 3) can be delivered to IEEE 802.3af compliant PoE powered devices such as IP phones, wireless access points, and security cameras
  • 15.4 watts of PoE power: can be provided to all twelve ports with the D2-HIPWR-POE option
  • PoE power management: prioritize which ports receive power and how much power each port may provide
  • Jumbo frames: enables high-performance remote backup and disasterrecovery services

High Availability

  • IEEE 802.1s Multiple Spanning Tree Protocol: provides high link availability in multiple VLAN environments by allowing multiple spanning trees; encompasses IEEE 802.1D Spanning Tree Protocol and IEEE 802.1w Rapid Spanning Tree Protocol
  • IEEE 802.3ad Link Aggregation Control Protocol (LACP): support up to 6 trunks, each with up to 8 ports per trunk
  • Optional external redundant power supply

Layer 2 Switching

  • IEEE 802.1q VLAN support and tagging: supports up to 1,024 VLANs simultaneously
  • IEEE 802.1v protocol VLANs: isolate select non-IPv4 protocols automatically into their own VLANs
  • GARP VLAN Registration Protocol: allows automatic learning and dynamic assignment of VLANs

Quality of Service (QoS)

  • Traffic classification at layer 2,3,4: enables packet classification and tagging at the network edge based on any of the following attributes: MAC address, physical port, IP address, IP protocol, IP ToS/DSCP, TCP/UDP port, and IP subnet
  • Traffic prioritization: allows real-time traffic classification into 8 priority levels mapped to eight hardware queues. Weighted round robin (WRR) or strict priority (SP) queuing are supported which keeps low priority traffic from being completely starved of bandwidth. Support for IP Differentiated Services Code Point (DSCP) enables the D2 to enforce requested service levels


Business Alignment

  • Quiet design and flexible mounting options support evolving workgroup environments
  • High-availability design with redundant power (including PoE) assures reliable network operations
  • Aligns network resource utilization with business goals and priorities

Operational Efficiency

  • Temperature-tolerant design enables quiet operation and flexible physical placement of equipment
  • Role-based policies simplify addition of new users
  • Centralized management reduces network operational expenses


  • Integral security without performance degradation
  • Network security maintained concurrently with user mobility
  • Network resources securely allocated according to user operational roles

Support and Service

  • Industry-leading customer satisfaction and first call resolution rates
  • Personalized services, including site surveys, network design, installation, and training
  • Lifetime warranty

Standards and Protocols:

Switching Services
  • IEEE 802.1AB - LLDP
  • ANSI/TIA-1057 - LLDP-MED
  • IEEE 802.1D - MAC Bridges
  • IEEE 802.1s - Multiple Spanning Trees
  • IEEE 802.1t - 802.1D Maintenance
  • IEEE 802.1w - Rapid Spanning Tree Reconvergence
  • IEEE 802.3 - Ethernet
  • IEEE 802.3ab - GE over Twisted Pair
  • IEEE 802.3ad - Link Aggregation
  • IEEE 802.3af - PoE
  • IEEE 802.3i - 10Base-T
  • IEEE 802.3u - 100Base-T, 100Base-FX
  • IEEE 802.3z - GE over Fiber
  • Full/half duplex auto-sense support on all ports
  • IGMP Snooping v1/v2/v3
  • IP Helper Address
  • Jumbo Frame support (9,216 bytes)
  • Loop Protection
  • One-to-One and Many-to-One Port Mirroring
  • Port Description
  • Protected Ports
  • Per-port Broadcast/Multicast/Unknown Unicast Suppression
  • Spanning Tree Backup Root
  • STP Pass Thru

VLAN Support

  • Generic Attribute Registration Protocol (GARP)
  • Generic VLAN Registration Protocol (GVRP)
  • IEEE 802.1p - Traffic classification
  • IEEE 802.1Q - VLAN Tagging
  • Protocol-based VLANs with Extreme Networks Policy
  • IEEE 802.3ac - VLAN Tagging Extensions
  • Port-based VLAN Port (private port/private VLAN)
  • Tagged-based VLAN
  • VLAN Marking of Mirror Traffic

Quality of Service

  • 8 Priority Queues per Port
  • 802.3x Flow Control
  • IP DSCP - Differentiated Services Code Point
  • IP Precedence
  • IP Protocol
  • Queuing Control - Strict and Weighted Round Robin
  • Source/Destination IP Address
  • Source/Destination MAC Address
  • ARP Spoof Protection
  • DHCP Spoof Protection
  • Dynamic and Static MAC Locking
  • EAP Pass Thru
  • IEEE 802.1X Port Authentication
  • MAC-based Port Authentication
  • RADIUS Accounting for MAC Authentication
  • RADIUS Client
  • RFC 3580 - IEEE 802.1X RADIUS Usage Guidelines
  • Multi-user Authentication per Gigabit port
  • Password Protection (encryption)
  • Secure Networks Policy License
  • Secured Shell (SSHv2)
  • Secured Socket Layer (SSL)
  • User and IP Phone Authentication
  • Web-based Port Authentication

RFC and MIB Support

  • Extreme Networks Entity MIB
  • Extreme Networks Policy MIB
  • Extreme Networks VLAN Authorization MIB
  • IEEE 802.1AB - LLDP MIB
  • IEEE 802.1X MIB - Port Access
  • IEEE 802.3ad MIB - LAG MIB
  • RFC 826 - ARP and ARP Redirect
  • RFC 951, RFC 1542 - DHCP/BOOTP Relay
  • RFC 1213 - MIB/MIB II
  • RFC 1493 - BRIDGE-MIB
  • RFC 1643 - Ethernet-like MIB
  • RFC 2131, RFC 3046 - DHCP Client/Relay
  • RFC 2233 - IF-MIB
  • RFC 2271 - SNMP Framework MIB
  • RFC 2465 - IPv6 MIB
  • RFC 2466 - ICMPv6 MIB
  • RFC 2618 - RADIUS Authentication Client MIB
  • RFC 2620 - RADIUS Accounting Client MIB
  • RFC 2668 - Managed Object Definitions for
  • 802.3 MAUs
  • RFC 2674 - P-BRIDGE-MIB
  • RFC 2674 - QBRIDGE-MIB VLAN Bridge MIB
  • RFC 2737 - Entity MIB (physical branch only)
  • RFC 2819 - RMON-MIB
  • RFC 2933 - IGMP MIB
  • RFC 3289 - DiffServ MIB
  • RFC 3413 - SNMPv3 Applications MIB
  • RFC 3414 - SNMPv3 User-based Security Module (USM) MIB
  • RFC 3415 - View-based Access Control Model for SNMP
  • RFC 3584 - SNMP Community MIB
  • RFC 3621 - Power over Ethernet MIB
  • Alias Port Naming
  • Command Line Interface
  • Configuration Upload/Download
  • Editable Configuration File
  • TFTP client
  • Multi-configuration File Support
  • NMS Automated Security Manager
  • NMS Console
  • NMS Inventory Manager
  • NMS Policy Manager
  • Node/Alias Table
  • RFC 768 - UDP
  • RFC 783 - TFTP
  • RFC 791 - IP
  • RFC 792 - ICMP
  • RFC 793 - TCP
  • RFC 826 - ARP
  • RFC 854 - Telnet
  • RFC 951 - BootP
  • RFC 1157 - SNMP
  • RFC 1901 - Community-based SNMPv2
  • RFC 2271 - SNMP Framework MIB
  • RFC 3164 - The BSD Syslog Protocol
  • RFC 3413 - SNMPv3 Applications
  • RFC 3414 - User-based Security Model for SNMPv3
  • RFC 3415 - View-based Access Control Model for SNMP
  • RFC 3826 - Advanced Encryption System (AES) for SNMP
  • RMON (Stats, History, Alarms, Events, Filters, Packet Capture)
  • Secure Copy
  • Secure FTP
  • Simple Network Management Protocol (SNMP) v1/v2c/v3
  • Simple Network Time Protocol (SNTP)
  • SSH v2
  • Syslog
  • TACACS+ for Management Authentication, Authorization and Auditing
  • Text-based Configuration Upload/Download
  • Web-based Management
  • Webview via SSL Interface


D-Series Models D2G124-12 D2G124-12P
Description 12-port 10/100/1000 switch with 2 SFP combo ports and power brick 12-port 10/100/1000 PoE switch with 2 SFP combo ports and 130 watt power brick
  • 12-port 10/100/1000 switch with 2 SFP combo ports and power brick
  • 2 combo SFP GBIC ports (a total of 12 of the 14 front panel ports can be active at one time)
  • 12-port 10/100/1000 PoE switch with 2 SFP combo ports and 130 watt power brick
  • 2 combo SFP GBIC ports (a total of 12 of the 14 front panel ports can be active at one time)
Power Supplies The switch supports redundant power feeds so 2 power "bricks" can be used in cases where redundancy is required. See Accessories for additional power bricks.
Form Factor Fixed standalone. Two D2s side by side can be mounted in a 19 inch rack.
Memory and Processor 256 MB RAM
32 MB flash memory
256 MB RAM
32 MB flash memory
Throughput 17.86 Mpps 17.86 Mpps
Switching capacity 24.0 Gbps 24.0 Gbps
PoE power per port (watts) N/A At 40° C or less, an average of 8.3 W per port. Up to 15.4 W for Class 3 support on any port up to a system maximum of 100 watts of PoE power. Total system PoE power decreases 2.16 W per ° C increase over 40° C.
IEEE 802.3af Compliant N/A Yes
Management NMS Policy Manager, Automated Security Manager (additional license), command line interface, web browser NMS Policy Manager, Automated Security Manager (additional license), command line interface, web browser
Physical Specifications
Dimensions (HxWxD) 1.60x8.25x8.50 in / 4.06x20.9x21.5 cm 1.60x8.25x8.50 in / 4.06x20.9x21.5 cm
Net Weight (g/lb) 3.65 lb / 1.66 kg 4.02 lb / 1.82 kg
MTBF (Hrs) 105,347 82,532
Thermal Output (BTUs/Hr) 86.35 (BTUs/Hr) 107.5 (BTUs/Hr)
Power Requirements
Input Voltage 100-240 VAC 100-240 VAC
Input Frequency 50-60 Hz 50-60 Hz
Input Current 2.0 A 3.2 A
Power Consumption (watts) 25 W 31.5 W
Environmental Specifications
Operating Temperature (C/F) 0-60° C / 32-140° F 0-50° C / 32-122° F
Non-Operating/Storage Temperature (C/F) -40-70° C / -40-158° F -40-70° C / -40-158° F
Operating Humidity 5%-95% non-condensing 5%-95% non-condensing
Agency & Standards Specifications
Standard Safety (UL) UL/CB/LVD UL/
Standard EMC CE / FCC Class A / VCCI / C-Tick /BSMI
Non-Operational Shock and Drop ISTA 2A


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