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Extreme Networks G-Series G3
Policy-based 10 G Modular L2/L3/L4 Edge Switch

Extreme Networks G-Series G3

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



The Extreme Networks G3 is a Gigabit Ethernet switch with 3 expansion slots that support 24-port Gigabit Ethernet as well as 2-port and 4-port 10GE I/O modules. With its wire-rate switching and routing capabilities, including IPv6 routing, the G3 is well-suited for dynamic switching/routing environments that require high-density Gigabit Ethernet ports and high-capacity 10GE uplinks. Along with a switch capacity of 384 Gbps, the G3 provides 24 Ethernet ports (either fixed 10/100/1000Base-T or 1 Gbps SFPs). Two of the ports on the 10/100/1000 switches are combo ports, which can be accessed via either the 10/100/1000Base-T or 1 Gbps Small Form-Factor Pluggable (SFP) connectors.

  • 3-slot modular architecture supports high-density Gigabit Ethernet and 10GE I/O modules
  • High-availability design with redundant power assures reliable network operations
  • PoE and IPv4 & IPv6 routing support a variety of networks and devices
  • Aligns network resource utilization with business goals and priorities
  • 384 Gbps capacity and 214 Mpps line-rate switching and routing

In order to provide a reliable, high-availability network, the G3 offers field-replaceable redundant power supplies and supports Link Aggregation Groups (LAGs), OSPF Equal Cost Multipath and Virtual Router Redundancy Protocol (VRRP). Both the standard and Power over Ethernet (PoE) G3 models support redundant, integral power supplies, which can be configured to operate in either a load-sharing (redundant) or additive power configuration.

In conjunction with its non-blocking architecture, the G3's robust Quality of Service (QoS) features enable strong support for converged multimedia networks, including Voice over IP (VoIP) and video, as well as all types of data-intensive applications. The G3'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, a network administrator can define distinct roles or profiles that represent specific operational groups within an organization. Each defined role is granted individualized access to specific network services and applications (e.g., manager, employee, 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 predefined operational role ensuring that each user has access to appropriate information, thus aligning network resource utilization with business goals and priorities.

In order to sustain a secure, feature-rich and cost-effective network well into the future, the G3 includes a lifetime warranty.



  • Business-oriented policy-based security by user, protocol, port, or VLAN
  • Technology-oriented ACL-based security by port and per VLAN
  • Better password security via increased complexity, history tracking and aging. Passwords can now be encrypted using a FIPS 1402 approved algorithm.
  • Multiple user authentication via IEEE 802.1X, Web portal, and/or MAC address simultaneously for up to 8 users/devices per port
  • Multiple user VLAN assignment via RFC 3580 for up to 8 users/ devices per port
  • Acceptable use policy enforcement when deployed with Extreme Networks Network Management Suite (NMS)
  • Rapid detection, isolation, and remediation of threats when deployed with the Extreme Networks NMS and Intrusion Prevention System (IPS)
  • Proactive protection services:
    • MAC address lockdown / lockout
    • Worm & virus quarantine
    • Source port pairing
    • ARP broadcast protection
    • BPDU port protection
    • DHCP service protection


  • Crossbar capacity: the G3 provides a crossbar capacity of up to 285.7 Mpps and 384 Gbps bandwidth
  • Switch capacity: the G3 performs at wire speed per port and provides switching capacity up to 214 Mpps throughput with current IOMs
  • Address table size: up to 32,000 addresses are supported
  • Hardware queues: 8 hardware queues per port are supported


  • Secure management: authenticated and encrypted SNMPv3 support in addition to SSHv2 and SSL
  • Policy support: the G3 supports the creation of 31 profiles and 1,536 unique policy rules per device; up to 8 roles or profiles are supported per port
  • Port mirroring: mirrors ingress 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 network devices such as IP phones
  • IP multicast routing: optional advanced routing license supports DVMRP and PIM sparse mode
  • IP multicast snooping (data-driven IGMP): automatically prevents flooding of IP multicast traffic


  • IEEE 802.3af Power over Ethernet: provides up to 15.4 W per port to IEEE 802.3af compliant PoE powered devices such as IP phones, wireless access points, and security cameras
  • PoE power management: prioritizes which ports receive power and detects powered and non-powered end devices to enable attachment of PoE and standard Ethernet devices on a single switch. Class-based power management assigns the maximum amount of power required for a PoE class (0-4) to an attached device. Manual Mode distributes power to PoE-powered I/O modules manually, allowing for extra power to be distributed to designated ports.
  • Jumbo frames: enables high-performance remote backup and disasterrecovery services
  • IPv6 capable: IPv4/IPv6 dual host management support with IPv6 routing via an optional IPv6 routing license

High Availability

  • Virtual Router Redundancy Protocol (VRRP): requires optional G3 Advanced Routing License. VRRP allows creation of highly available routed environments
  • 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): Flexible Link Aggregation Groups (6 groups of 8, 12 groups of 4 or 24 groups of 2) which allow multiple Ethernet ports (8, 4 or 2) to be grouped together to create a LAG.
  • Hot-swappable power supplies, I/O modules, and SFP/XFP optics
  • Redundant power supplies and cooling
  • Sparing simplicity: common accessories (interface modules, power supplies)

Layer 2 Switching

  • IEEE 802.1q VLAN support and tagging: supports up to 1,024 VLANs simultaneously
  • GARP VLAN Registration Protocol: allows automatic learning and dynamic assignment of VLANs

Layer 3 Services

  • Layer 3 IP routing: static IP routing provides basic routing. RIP provides RIPv1 and RIPv2 routing at media speed for up to 2,500 IPv4 routes. Optional Advanced Routing License includes PIM, VRRP, and OSPF2 which supports ECMP to provide link redundancy/scalable bandwidth and NSSA. IPv6 routing is supported via the optional IPv6 Routing License
  • UDP helper function: UDP broadcasts can be directed across router interfaces to specific IP unicast or subnet broadcast addresses and prevent server spoofing for UDP services such as DHCP
  • Loopback interface address: defines an address in RIP and OSPF that can always be reachable, improving diagnostic capability

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

Investment Protection

  • Seamless transition from RFC 3580 and complex ACL deployments to the Extreme Networks role-based policy framework, without the need to make changes to the RADIUS infrastructure (e.g., adding filter-ID)
  • Includes lifetime warranty that continues for five years after the date of product discontinuation.


Business Alignment

  • Versatile edge switch combines the size and cost-effectiveness of a stackable and the modularity of a chassis to support business-critical applications
  • High-availability design with redundant power assures reliable network operations
  • Granular QoS capabilities support converged multimedia networks

Operational Efficiency

  • Modular architecture supports network growth and flexible connectivity, including 10GE
  • Centralized management and role-based policies reduce network operational expenses
  • Complete multi-layer switching with IPv4 and optional IPv6 routing for evolving network architectures


  • 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 802.1D - 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 - Selectable Link Aggregation Configuration (6 x 8, 12 x 4, 24 x 2)
  • IEEE 802.3ae - 10 Gigabit Ethernet (fiber)
  • 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
  • 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
  • IEEE 802.1v - Protocol-based VLANs
  • IEEE 802.3ac - VLAN Tagging Extensions
  • Port-based VLAN (private port/private VLAN)
  • Tagged-based VLAN
  • VLAN Marking of Mirror Traffic
  • VLAN to Policy Mapping
  • Standalone VLAN Association application for subnet, protocol and MAC based VLAN classification

Quality of Service

  • 8 Priority Queues per Port
  • 802.3x Flow Control
  • IP DSCP - Differentiated Services Code Point
  • IP Precedence
  • IP Protocol
  • Mixed 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 - Dynamic VLAN Assignment
  • RFC 3580 - Multi-user Authentication
  • Password Protection (encrypted using a FIPS 1402 approved algorithm)
  • Secured Shell (SSHv2)
  • Secured Socket Layer (SSL)
  • User and IP Phone Authentication
  • Web-based Port Authentication
  • Pre-login banner
  • Auto Console Disconnect
  • Security Log
  • Secure Directory
IPv4 Routing & Simulcast
  • ARP Dynamic Table Size: 2024
  • ARP Static Table Size: 512
  • ARP & ARP Redirect
  • DCHP/BOOTP Relay
  • DVMRP (optional license)
  • IP Helper Address
  • RFC 826 - Ethernet ARP
  • RFC 1058 - RIP v1
  • RFC 1256 - ICMP Router Discovery Messages
  • RFC 1583, RFC 2328 - OSPF2 (optional license)
  • RFC 1724 - RIPv2 MIB Extension
  • RFC 1850 - OSPF v2 MIB (optional license)
  • RFC 2236 - IGMPv2
  • RFC 2338 - IP Redundancy VRRP (optional license)
  • RFC 2362 - PIM-SM (optional license)
  • RFC 2453 - RIP v2
  • RFC 2787 - VRRP MIB (optional license)
  • RFC 2863 - The Interfaces Group MIB
  • RFC 2933 - IGMP MIB
  • RFC 2934 - PIM MIB for IPv4 (optional license)
  • RFC 3046 - DHCP/BootP Relay
  • RFC 3768 - VRRP - Virtual Router (optional license)
  • Redundancy Protocol
  • Static Routes
  • Service ACLs
  • MAC-based ACLs - not simultaneously supported with policy
  • OSPF Passive Interface
  • VRRP master-icmp-reply

IPv6 Routing

  • RFC 1981 - Path MTU for IPv6
  • RFC 2373 - IPv6 Addressing
  • RFC 2460 - IPv6 Protocol Specification
  • RFC 2461 - Neighbor Discovery
  • RFC 2462 - Stateless Autoconfiguration
  • RFC 2463 - ICMPv6
  • RFC 2464 - IPv6 over Ethernet
  • RFC 2473 - Generic Packet Tunneling in IPv6
  • RFC 2711 - IPv6 Router Alert
  • RFC 2740 - OSPFv3
  • RFC 2893 - Transition Mechanisms for IPv6 Hosts and Routers (6 over 4 configured)
  • RFC 3315 - DHCPv6 (stateless + relay)
  • RFC 3484 - Default Address Selection for IPv6
  • RFC 3493 - Basic Socket Interface for IPv6
  • RFC 3513 - Addressing Architecture for IPv6
  • RFC 3542 - Advanced Sockets API for IPv6
  • RFC 3587 - IPv6 Global Unicast Address Format
  • RFC 3736 - Stateless DHCPv6
  • Dual IPv4/IPv6 TCP/IP Stack
  • IPv6 ACLs - not simultaneously supported with policy
RFC and MIB Support
  • Extreme Networks Entity MIB
  • Extreme Networks Policy MIB
  • Extreme Networks VLAN Authorization MIB
  • Extreme Networks Spanning Tree Diagnostic 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 2863 - ifMib
  • 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 3580 - IEEE 802.1X Remote Authentication Dial-in User Service (RADIUS) Usage Guidelines
  • RFC 3584 - SNMP Community MIB
  • RFC 3621 - Power over Ethernet MIB
  • Alias Port Naming
  • Command Logging
  • Command Line Interface
  • Configuration Upload/Download
  • Editable Configuration File
  • FTP/TFTP Client
  • Multi-configuration File Support
  • NMS Automated Security Manager
  • NMS Console
  • NMS Inventory Manager
  • NMS Policy Manager
  • Node/Alias Table
  • RFC 854 - Telnet
  • RFC 1157 - SNMP
  • RFC 1901 - Community-based SNMPv2
  • RFC 2271 - SNMP Framework MIB
  • RFC 3413 - SNMPv3 Applications
  • RFC 3414 - User-based Security Model for SNMPv3
  • RFC 3415 - View-based Access Control Model for SNMP
  • RMON (Stats, History, Alarms, Events, Filter, Packet Capture)
  • sFlow
  • Secure FTP / Secure Copy
  • Simple Network Time Protocol (SNTP)
  • SSH
  • Syslog
  • TACACS+ for Management Authentication, Authorization and Auditing
  • Text-based Configuration Upload/Download
  • Web-based Management
  • Webview via SSL Interface


G-Series Models G3G124-24 G3G124-24P G3G170-24
Description 24-port 10/100/1000 switch with 3 modular expansion slots (power supply not included) 24-port 10/100/1000 PoE switch with 3 modular expansion slots (power supply not included) 24-port SFP switch with 3 modular expansion slots (power supply not included)
Port 24 fixed RJ-45 10/100/1000 ports with 2 SFP combo ports expandable to 96 (Type 10Base-T, Type 100Base-TX, Type 1000Base-T) 24 fixed RJ-45 10/100/1000 ports with PoE and 2 SFP combo ports expandable to 96 (Type 10Base-T, Type 100Base-TX, Type 1000Base-T) 24 fixed SFP 1000Base-X/ 100FX ports expandable to 96 (SFP: Small Form-Factor Plug-in) transceivers for both fiber and copper connections
Empty Slots 3 empty slots for Input/Output Modules (IOMs)
Power Supplies Power supplies not included in base unit. Order separately, see Accessories section.
Form Factor Fixed modular, standalone Fixed modular, standalone Fixed modular, standalone
Memory and Processor 256 MB RAM
32 MB flash memory
256 MB RAM
32 MB flash memory
256 MB RAM
32 MB flash memory
Throughput Up to 214 Mpps Up to 214 Mpps Up to 214 Mpps
Switching capacity 384 Gbps 384 Gbps 384 Gbps
PoE total power Class 3 (watts) 96 ports non-redundant,
48 ports redundant
96 ports non-redundant,
48 ports redundant
Up to 72 ports non-redundant
Up to 48 ports redundant
PoE total power Class 2 (watts) 96 ports fully redundant 96 ports fully redundant Up to 72 ports fully redundant
PoE power per port (watts) 15.4 W for Class 3 15.4 W for Class 3 15.4 W for Class 3
IEEE 802.3af Compliant Yes Yes Yes
Management NMS Policy Manager, Automated Security Manager (additional license), command line interface, web browser
Physical Specifications
Dimensions (HxWxD) 3.5x17.3x19 in / 8.8x44.1x48.1 cm 3.5x17.3x19 in / 8.8x44.1x48.1 cm 3.5x17.3x19 in / 8.8x44.1x48.1 cm
Net Weight (g/lb/Kg) 21.16 lb / 9.598 kg 21.30 lb / 9.662 kg 21.75 lb / 9.866 kg
MTBF (Hrs) 119,152 107,645 134,153
Thermal Output (BTUs/Hr) 429 443 314
Power Requirements
Input Voltage 100-240 VAC 100-240 VAC 100-240 VAC
Input Frequency 50-60 Hz 50-60 Hz 50-60 Hz
Input Current 1.7 A @100 VAC / 0.7 A @240 VAC 1.8 A @100 VAC / 0.7 A @240 VAC 1.7 A @100 VAC / 0.7A @240 VAC
Power Consumption (watts) 126 W 130 W [Without PoE power draw] 92 W
Environmental Specifications
Operating Temperature (C/F) 0-50° C / 32-122° F 0-50° C / 32-122° 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 -40-70° C / -40-158° F
Operating Humidity 5%-95% non-condensing 5%-95% non-condensing 5%-95% non-condensing
Low Speed Acoustics 52 dB 52 dB 52 dB
High Speed Acoustics 62 dB 62 dB 62 dB
Agency & Standards Specifications
Standard Safety (UL) UL/CB/LVD
Standard EMC CE / FCC Class A / VCCI / C-Tick /BSMI
Non-Operational Shock and Drop ISTA 2A

IOMs Specifications G3G-24TX G3G-24SFP G3K-2XFP G3K-4XFP G3G-POE-B
Port G3G-24TX - 24 10/100/1000 port IOM with 2 Combo SFP ports 24-port 1000BaseX IOM 2-port 10 GB IOM 4-port 10 GB IOM Power over Ethernet daughter card
Physical Specifications
Dimensions (HxWxD) 1.6x8.1x12.6 in /
4.1x20.5x32 cm
1.6x8.1x12.6 in /
4.1x20.5x32 cm
1.6x8.1x12.6 in /
4.1x20.5x32 cm
1.6x8.1x12.6 in /
4.1x20.5x32 cm
0.63x6.69x4.49 in /
1.6x17x11.4 cm
Net Weight (g/lb/Kg) 2.43 lb / 1.1 kg 3.09 lb / 1.4 kg 2.20 lb / 1 kg 2.43 lb / 1.1 kg 0.14 lb / 0.064 kg
MTBF (Hrs) 354,050 394,524 346,617 246,568 1,114,579
Thermal Output (BTUs/Hr) 119 79 92 136 13
Power Requirements
Input Voltage 54V DC 54V DC 54V DC 54V DC 54V DC
Input Current 0.65 0.43 0.41 0.74 0.07
Power Consumption (watts) 35 W 23 W 27 W 40 W 4 W
Environmental Specifications
Operating Temperature (C/F) 0-50° C / 32-122° F
Non-Operating/Storage Temperature (C/F) -40-70° C / -40-158° F
Operating Humidity 5%-95% non-condensing
Agency & Standards Specifications
Standard Safety (UL) UL
Standard EMC CE / FCC Class A / VCCI / C-Tick /BSMI
Non-Operational Shock and Drop ISTA 2A


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