Grandstream GWN7821P Layer 3 Multi-Gigabit PoE++ Switch, 8x 2.5GbE, 2x 10G SFP+, 240W

Part number GWN7821P

8x 2.5 Gigabit ports and 2 10G SFP+ ports
Smart dynamic PoE/PoE+ and PoE++ (IEEE 802.3af/at/bt): up to 60 W per port, 240 W total
Layer 3 static and dynamic routing (RIP, RIPng, OSPF, OSPFv3, BGP) in IPv6 and IPv4 networks
Reliability features including fault detection, device protection, dual boot, dual system file redundancy, link aggregation and storm control
ACL filtering with matching rules, processing operations and time schedules for flexible security access control
Built-in QoS and support for stacking of up to 4 devices with redundant backup
Management via embedded controller, GDMS Networking, GWN Manager, CLI and GWN routers

PoE Gigabit Fiber Cloud Managed Grandstream Layer 3 Multi-Gigabit Rack Mount SFP

Ask on WhatsApp Quote for installers and contractors

Delivery within 4–10 business days across Saudi Arabia
Warranty according to the manufacturer
Tax invoice with every order
Technical support before and after purchase

Not sure this model fits your setup? Read the buying guide

Official datasheetGrandstream_GWN7821P_Datasheet.pdf Download

Overview of Grandstream GWN7821P

The Grandstream GWN7821P is a Layer 3 multi-gigabit managed PoE switch from the GWN7820 series, designed for medium-to-large enterprises that need scalable, secure and high-performance networks. It provides 8 2.5G ports and 2 10G SFP+ uplinks, and every port delivers PoE/PoE+/PoE++ up to 60 W with a 240 W total budget, ideal for powering Wi-Fi access points, IP cameras and IP phones. Advanced VLANs, QoS, IGMP/MLD Snooping, static and dynamic routing and comprehensive security are included, with stacking of up to 4 devices. Manage it via web UI, CLI, GDMS Networking, GWN Manager or GWN routers in offices, hotels, schools and warehouses.

Technical Specifications – Grandstream GWN7821P

General

Network Protocols	IPv4, IPv6, IEEE 802.3, IEEE 802.3i, IEEE 802.3u, IEEE 802.3ab, IEEE 802.3z, IEEE 802.3ae, IEEE 802.3az, IEEE 802.3ad, IEEE 802.3x, IEEE 802.3af/at/bt, IEEE 802.1p, IEEE 802.1Q, IEEE 802.1d, IEEE 802.1w, IEEE 802.1s, IEEE 802.1x
Memory	256MB RAM, 8MB Nor Flash, 128MB Nand Flash
Jumbo Frame (Bytes)	12288

Ports

Gigabit Ports	8x 2.5G
SFP+ Ports	2 (to support DAC, cable must be ≤ 5m)
Maximum No. of Supported Modules	SM-10G: 2; MM-10G: 2; RJ45-10G: 2
Console	1
Auxiliary Ports	1 × Reset Pinhole
Link Aggregation Groups	32

Power & PoE

PoE Standards	IEEE 802.3af/at/bt
PoE Ports	8
Integrated Power Supply	280W (54V/5.19A)
Max Output Power per PoE Port	60W
Max Total PoE Output Power	240W
Surge Protection	±6 kV CM and DM for power; ±4 kV CM for network ports
ESD	±12 kV for contact discharge

Performance

Forwarding Mode	Store-and-forward
Total Non-Blocking Throughput	40Gbps
Switching Capability	80Gbps
Forwarding Rate	59.52Mpps
Packet Buffer	12Mb
Network Latency	<4 µs
Stacking	Yes, up to 4 devices

Software Features

Switching	16K MAC addresses, including static, dynamic and filtering MAC address; 4K VLANs, port-based VLAN, IEEE 802.1Q VLAN tagging, MAC-based VLAN, protocol-based VLAN; Voice VLAN including auto voice VLAN, tagged OUI and untagged OUI; Private VLAN; 16 VLAN virtual interface with 9216 MTU; GVRP (pending); 1K ARP/NDP; Spanning tree, 32 instances for STP/RTSP/MSTP/PVST(+)/RPVST(+); ERPS (pending)
Routing	512 (IPv4)/128 (IPv6) routes; 32 (IPv4)/32 (IPv6) static routing; Policy routing (pending); Dynamic routing, including RIP, RIPng, OSPF, OSPFv3, BGP and IS-IS (pending); Routing Policy; VRRP (pending)
Multicast	IGMP Snooping with IGMPv2 and IGMPv3, 256 IGMP Snooping groups; MLD Snooping with MLDv1 and MLDv2, 256 MLD Snooping groups; MVR
QoS/ACL	Port priority; Priority mapping; Queue scheduling, including SP, WRR, WFQ, SP-WRR and SP-WFQ; Traffic shaping; Rate limit; 2K ACL for Ethernet, IPv4 and IPv6
DHCP	DHCP server, DHCP relay, DHCP Option 82, 60, 160 and 43
Maintenance	CPU and memory monitoring; Fault detection and alarm for power supply and fan; SNMP including SNMPv1, SNMPv2c, SNMPv3; RMON; LLDP & LLDP-MED; Backup and restore; Syslog; Diagnostics including Ping, Traceroute, Mirroring including SPAN and RSPAN, UDLD (pending) and copper test; Upgrade via FTPS / TFTP / HTTP / HTTPS or local upload, mass provisioning using DHCP Option / TR-069 (pending) / GDMS Networking / GWN Manager / GWN Series Routers
Security	User hierarchical management and password protection, HTTPS, SSH, Telnet; Identity authentication including 802.1X and MAC authentication; AAA authentication including RADIUS, TACACS+; Storm control; Port isolation, port security, sticky MAC; Filtering MAC address; IP/IPv6 source guard, DoS attack prevention, ARP inspection; DHCP/DHCPv6 Snooping; Loop protection including BPDU protection, root protection and loopback protection; Kensington Security Slot (Kensington Lock) support

Physical & Environmental

Mounting	Desktop, or Rack-Mount (rack-mounting kits included)
System LEDs	1x tri-color LED for device tracking and status indication
PoE Powered LEDs	8x yellow-color LEDs
Data Transferring LEDs	10x green-color LEDs
Fan	2
Environmental	Operating: 0 °C to 45 °C, humidity 10–90% RH non-condensing; Storage: -10 °C to 60 °C, humidity 10–90% RH non-condensing
Dimensions	330mm (L) × 175mm (W) × 44mm (H)
Unit Weight	1.9 kg
Package Content	1x Switch; 1x 1.2m AC Cable; 1x 25cm Ground Cable; 4x Rubber Footpads; 1x Power Cord Anti-Trip; 2x Extended Rack-Mounting Kits; 8x Screws (KM 3*6); 1x Simplified Quick Installation Guide; 1x Regulatory Paper
Compliance	FCC, CE, RCM, IC

Source: Grandstream official website and datasheet. Specifications are subject to change by the manufacturer.

Equipping a project with several devices?We recommend the right models and prepare a formal quotation.

Request a quote

From the same family

Suggested alternatives

GWN7811P Grandstream GWN7811P Layer 3 Managed PoE Switch, 8x GbE PoE+, 2x 10G SFP+, 120W ⃁ 802.97

GWN7812P Grandstream GWN7812P Layer 3 Managed PoE Switch, 16x GbE PoE+, 4x 10G SFP+, 240W ⃁ 1,212.18

GWN7813P Grandstream GWN7813P Layer 3 Managed PoE Switch, 24x GbE PoE+ (8x PoE++), 4x 10G SFP+ ⃁ 1,773.29

PRACTICAL ANSWERS

Network planning questions

Should I choose a router, a switch or an access point?

Start with the task: connecting networks, adding wired device ports, or providing wireless coverage. A single installation may need more than one device type. Share a site diagram and device list so the proposed roles and connections are clear.

Why is wireless coverage weak in some rooms?

Check the access point location, building layout, obstacles and the number of active devices. Measure coverage where people actually work before choosing extra equipment; changing the internet package alone may not address a coverage problem.

How do I select a switch for powered network devices?

List the devices to be connected and check each device’s power requirements against the switch’s per-port capability and total documented power budget. Also review uplink capacity and reserve ports for the expansion you actually expect.

Can the guest network be separated from business devices?

Define which devices and services guests should be able to reach, then check whether the router, switch and access points support the required separation. Test the resulting access rules; a different wireless network name alone is not the acceptance test.

What information helps plan a network upgrade?

Provide floor plans, current equipment models, internet connections, cabling details and peak device counts. Describe the applications that matter most and the observed problem, such as disconnections or slow local file access.

How should network performance be checked after installation?

Agree on the locations and representative workloads to test, then record wired and wireless results separately. Check connectivity, coverage and access rules during normal use, and retain a diagram and configuration backup for support.