General - Hardware Version: A1 - Interfaces: 48 x 25G SFP28 ports 6 x 100G QSFP28 ports 1 x USB 2.0 port - Console Port: 1 x mini-USB console port - OOB Management Port: 1 x 10/100/1000BASE-T RJ-45 port

	Performance - Switching Capacity: 3.6 Tbps - Max. Forwarding Rate: 2,380 Mpps (2.380 Bpps) - Packet Buffer Memory: 16 MB - MAC Address Table: 40K

Physical - Power Input: 1+1 redundant power supply design Input: 100 to 240 V AC, 50/60 Hz - Maximum Power Consumption: 395 W - Heat Dissipation (Max.): 1347.74 BTU/hr - Fans: 4 x fans - Acoustics: Max: 72.3 dB Min: 58.6 dB - Operating Temperature: 0 to 45oC (32 to 113oF) - Storage Temperature: -40 to 70oC (-40 to 158oF) - Operating Humidity: 5% to 95% RH, non-condensing - Storage Humidity: 5% to 95% RH, non-condensing - MTBF: 205,500 hours

	Certifications - Safety: cULus CCC BSMI CB CE - EMI/EMC: FCC/IC CCC CB CE BSMI

Software Features(D-Link OS) L2 Features - MAC address table: Up to 40K entries - 802.3ad Link Aggregation: Max. 64 groups per device Max. 32 ports per group - Spanning Tree Protocol (STP): 802.1D STP 802.1w RSTP 802.1s MSTP BPDU Filter/Guard Loop Guard TCN Guard Root Guard - Supports 802.3x Flow Control - Jumbo frame: Up to 9 Kb - Port mirroring: Supports One-to-One, Many-to-One Supports mirroring for Tx/Rx/Both Supports up to 4 mirroring groups - Flow mirroring: Supports Rx mirroring - VLAN mirroring - RSPAN - Loopback Detection (LBD)

	L2 Multicast Features - IGMP Snooping: IGMP Snooping v1/v2/v3 IGMP Fast Leave Supports up to 256 IGMP groups Per-VLAN IGMP Snooping IGMP Snooping Querier - MLD Snooping: MLD Snooping v1/v2 Supports up to 256 MLD groups Per-VLAN MLD Snooping MLD Snooping Querier

	L3 Features - IP interfaces: Supports 128 IP interfaces - ARP: Supports 6K ARP entries Supports 256 static ARP entries - IPv6 Neighbor Discovery (ND): Supports up to 2560 ND entries Supports up to 32 static ND entries - Gratuitous ARP - VRRP v2 - UDP Helper - ICMP Router Discovery Protocol (IRDP) - Equal-Cost Multi-Path (ECMP) - IPv6 Tunneling: 6to4 GRE - IPv4/IPv6 Loopback interface

L3 Routing - Static routing: Max. 64 IPv4 entries Max. 64 IPv6 entries Supports Equal-Cost-Multi-Path Route (ECMP) - OSPF: OSPF v2/v3 Stub/NSSA Area OSPF Passive Interface Text/MD5 authentication Supports Equal-Cost-Multi-Path Route (ECMP) - Supports 12K hardware routing entries shared by IPv4 and IPv6 - Supports 20K hardware L3 forwarding entries shared by IPv4 and IPv6 - IPv4/IPv6 Default Route - Null Route - Route Preference - Route Redistribution - Graceful Restart (GR) for OSPF - Grace Restart (GR) Helper for RIP - Bidirectional Forwarding Detection (BFD) for OSPF - BGP: BGP4/BGP4+ Max. 256 BGP neighbors Supports MD5 authentication - Policy-based Route (PBR):

	L3 Multicast Features - IGMP v1/v2/v3 - MLD v1/v2 - DVMRP v3 - PIM-SSM - SSM Mapping for IPv4/IPv6 - PIM-SM IPv4/IPv6 - PIM-DM IPv4/IPv6 - IGMP/MLD proxy

	VLAN - 802.1Q - Port-based VLAN - Multicast VLAN (ISM VLAN for IPv4/IPv6) - Private VLAN - Double VLAN (Q-in-Q) - VLAN groups: Max. 4K VLAN groups Max. 1-4093 VLAN IDs

Security - Broadcast/unicast/multicast control - SSH: Supports v1/v1.5/v2.0 Supports IPv4/IPv6 access Configurable TCP port number - Port security: Supports up to 600 MAC addresses per port - DoS attack prevention - IP Source Guard - DHCP Snooping - IPv6 Snooping - DHCP Server Screening - Dynamic ARP Inspection (DAI) - IPv6 Route Advertisement (RA) Guard - Duplicate Address Detection (DAD) - BPDU Attack Protection

Authentication, Authorization, Accounting (AAA) - 802.1X authentication: Supports port-based access control Supports host-based access control Identity-driven policy assignment: Dynamic VLAN assignment, QoS assignment, ACL assignment - Guest VLAN - RADIUS authentication - TACACS+ authentication - MAC-based Access Control (MAC): Supports port/host-based access control Compatible with RADIUS server authentication - Authentication for management access - Privilege level for management access - Authentication database failover - RADIUS/TACACS+ accounting

Quality of Service (QoS) - Max. of 8 priority queues per port - Queue handling: Strict Priority (SP) Weighted Deficit Round Robin (WDRR) - Congestion control: Weighted Random Early Detection (WRED) - Bandwidth control: Queue-based bandwidth control min. granularity of 1% of the port speed - Three Color Marker: Two Rate Three Color Marker (trTCM) Single Rate Three Color Marker (srTCM) - Class of Service (CoS): Switch port Outer 802.1p priority ToS/IP preference DSCP - Policy Map: Remark 802.1p priority Remark ToS/DSCP Rate limiting

	Data Center Features - Open Network Install Environment (ONIE) - FCoE Initialization Protocol (FIP) Snooping - 802.1Qau Congestion Notification (CN) - 802.1Qbb Priority-based Flow Control (PFC) - Data Center Bridging Exchange (DCBX) - OpenFlow v1.3 - Open API - Supports Puppet/Chef - Virtual eXtensible Local Area Network (VXLAN)

Access Control List (ACL) - MAC Access List based on: 802.1p priority mask VID mask Source/destination MAC address mask Ether Type mask - IP Access List based on: Source/destination IP address mask IP preference/ToS mask TCP/UDP port number mask - IPv6 Access List based on: Source/destination IP address mask TCP/UDP port number mask - CPU interface filtering: Max. 1023 rule entries - Time-based ACL - Max. ACL entries: Max. ingress ACL entries: 16K Max. egress ACL entries: 16K Max. number of access control lists: 100 Max. VLAN access maps: 24 Max. ACL rule entries: 1K

Management - Industry-standard CLI - Telnet server for IPv4/IPv6 access - TFTP client for IPv4/IPv6 - FTP client for IPv4/IPv6 - Secure FTP (SFTP) client for IPv4/IPv6 - Multiple images - Dual configurations - SNMP: Supports SNMP v1/v2c/v3 Supports IPv4/IPv6 - SNMP traps - System log for IPv4/IPv6 Syslog server - Command logging - SMTP - RMON v1: Supports 1/2/3/9 groups - DHCP/BOOTP Client support for IPv4/IPv6 DHCP/BOOTP server - DHCP Relay: Supports IPv4/IPv6 Option 82 Supports user-defined TLV for Option 82 - Event log - DNS client - SNTPv4 - LLDP/LLDP-MED - CDP - UDLD - sFlow v5 - DHCP auto-configuration - DHCP auto-image - Flash file system - DNS client for IPv4/IPv6 - Debug command - Password recovery/encryption - Supports IPv4/IPv6 Ping/Traceroute

	Ordering Information (Bare Metal) 48-port 25G SFP28, 6-port 100G QSFP28 interfaces data center switch with 2 front-to-back AC PSUs, 4 front-to-back fan modules

	Optional D-Link OS Activation Licenses DQS-5K-54SQ28-DC-LIC: License to activate the D-Link OS on the DQS-5000-54Q28

Optional 10G SFP+ Transceivers - DEM-431XT: 10GBASE-SR, multi-mode, OM1: 33 m/ OM2: 82 m/ OM3: 300 m (without DDM) - DEM-432XT: 10GBASE-LR, single-mode, 10 km (without DDM) Optional 40G QSFP+ Transceivers - DEM-QX01Q-SR4: 40GBASE-SR4, multi-mode, OM3: 100 m / OM4: 150 m - DEM-QX10Q-SR4: 40GBASE-LR4, single-mode, 10 km Optional 10G SFP+ Direct Attach Cables - DEM-CB100S: 10G SFP+ to SFP+ 1 m Direct Attach Cable - DEM-CB300S: 10G SFP+ to SFP+ 3 m Direct Attach Cable - DEM-CB100QXS-4XS: 40G QSFP+ to 4 10G SFP+ 1 m Direct Attach Cable

Optional 10G SFP+ Transceivers - DEM-431XT: 10GBASE-SR, multi-mode, OM1: 33 m/ OM2: 82 m/ OM3: 300 m (without DDM) - DEM-432XT: 10GBASE-LR, single-mode, 10 km (without DDM) Optional 40G QSFP+ Transceivers - DEM-QX01Q-SR4: 40GBASE-SR4, multi-mode, OM3: 100 m / OM4: 150 m - DEM-QX10Q-SR4: 40GBASE-LR4, single-mode, 10 km Optional 10G SFP+ Direct Attach Cables - DEM-CB100S: 10G SFP+ to SFP+ 1 m Direct Attach Cable - DEM-CB300S: 10G SFP+ to SFP+ 3 m Direct Attach Cable - DEM-CB100QXS-4XS: 40G QSFP+ to 4 10G SFP+ 1 m Direct Attach Cable