network. Furthermore, the DXS-3227 protects against attacks towards the CPU itself, and improves utilization to meet existing network demands to maximize device responsiveness to user configuration activities.
High Availability
The DXS-3227 supports “Shortest-Path” switching, which improves resiliency, uptime, and network efficiency. It also supports an optional Redundant Power Supply (DPS- 500). It includes support for 802.3ad Link Aggregation, and 802.1w Rapid Spanning Tree for increased network reliability and availability.
Network Management
The DXS-3227 features a variety of network management options: console CLI, telnet, web GUI, SNMPv1/v2/v3, and RMON. It also supports a variety of advanced traffic management options including: Layer 3 Static Routing, Bandwidth Control, Broadcast Storm Control, Private VLANs, and support for IGMP Snooping. D-Link’s exclusive DNA stacking technology is also supported, which allows up to 16* D-Link DXS-3227 switches to be stacked together and managed as a single unit, regardless of its physical environment.
Advanced QoS
The DXS-3227 provides a robust and consistent set of QoS/CoS, supporting 8 priority queues for 802.1p/ToS/DiffServ, with classification and marking based on MAC SA/DA, IP SA/DA, and/or TCP/UDP. It also provides extensive support for GARP/GVRP, 802.1q, and port-based VLANs for up to 4000 groups per device.
Centralized Management
The xStack DXS-3227 is capable of centralized management of compatible wireless access points. No longer will each individual access point need to be configured independently. Now your entire wireless network can be managed through a single interface. The xStack DXS-3227 includes support for automatic discovery of APs with real-time monitoring, providing visibility into utilization and performance of WLAN users and devices.
detection and containment ensure only the APs you install are able to function on your network. AP detection allows identification of APs into “known” and “rogue” classifications. The switch uses the APs to continuously scan radio channels in an attempt to identify transmissions of unauthorized WLAN nodes facilitating notification, and or jamming of the rogue signals.
Seamless Roaming
When a user roams between APs connected to different broadcast domains, the users IP address is no longer valid after the move to the new AP. This means the users device (laptop, PDA, VoIP phone) will need to change its IP address thus breaking the active session. With “always connected” devices such as VoIP phones and PDA’s this can create a huge problem. The need for a solution to provide seamless roaming between APs on different subnets becomes essential to maintaining active sessions and VoIP calls.
The D-Link DXS-3227 addresses this problem by bringing AP configurations and support directly into the switch itself. This allows the user to move between access points with seamless mobility. To the users PDA or VoIP phone, the move appears as if it were between APs on a single broadcast domain. This means the users device will retain its VLAN membership and IP address guaranteeing uninterrupted communication.
Inter-Switch Roaming
The xStack DXS-3227 supports roaming of wireless stations between access points attached to different switches. The seamless inter-switch roaming procedure allows a station’s VLAN membership (IP subnet) and QoS parameters to be retained upon roaming between APs connected to multiple switches throughout the network. Inter-Switch roaming is an extremely beneficial feature when creating a large WLAN environment such as a campus or multi-floor office. Inter-Switch roaming allows the user complete freedom to roam between switches located in different buildings or on different floors without disconnection or need for re-authentication.
