The Grandstream GWN7831 is an enterprise‑grade Layer‑3 aggregation switch in the GWN 7830 series designed for medium to large business backbones, data center aggregation, or network cores. It provides a high port density with a mix of SFP and SFP+ uplink ports, combo ports, and is built for robust routing, high throughput, low latency, and strong security. It supports both IPv4 and IPv6, and is manageable both locally and via Grandstream’s cloud and on‑premise platforms (GWN.Cloud, GWN Manager, GDMS). It also offers redundancy features, modular flexibility, and advanced QoS / multicast / security for demanding enterprise environments.
Port configuration:
24 × Gigabit SFP ports + 4 × 10 Gigabit SFP+ uplinks + 4 × Gigabit “combo” ports (RJ‑45/SFP). Combo ports allow using either RJ‑45 or SFP depending on module.
High throughput & low latency:
Switching capacity around 128 Gbps, non‑blocking throughput ~64 Gbps, forwarding rate ~95.232 million packets per second (Mpps), latency under ~4 µs.
VLAN / Multicast / Link Aggregation:
Supports up to ~4,000 VLANs, voice VLANs, combo/protocol/port based VLANs; support for IGMP v2/v3 snooping, MLD v1/v2, MVR; link aggregation (many LAG groups).
Routing protocols:
Static routing plus dynamic routing (e.g. RIP, OSPF, OSPFv3).
Security features:
ARP Inspection, IP Source Guard, DHCP snooping, DoS protection, port security, loop / BPDU protection, etc. Management:
Local Web UI, CLI (SSH/Telnet/Console), SNMP v1/v2c/v3, LLDP, RMON, Syslog, embedded controller; also managed via cloud/on‑prem (GDMS, GWN.Cloud, GWN Manager).
Redundancy / Reliability:
Supports optional redundant power supply (external RPS 12V/60W), dual fans to ensure cooling and reliability.
Here are the detailed specs as gathered from sources:
| Category | Specification |
|---|---|
| Ports & Interfaces | 24 × Gigabit SFP ports; 4 × 10 Gigabit SFP+ uplink ports; 4 × Gigabit combo ports (RJ‑45/SFP) |
| Switching Performance | Switching capacity: ~128 Gbps; Non‑blocking throughput: ~64 Gbps; Forwarding rate: ~95.232 Mpps; Packet buffer: ~12 MB |
| Latency | Less than ~4 microseconds under load |
| VLAN, Multicast & LAG | Up to ~4,000 VLAN IDs; support for voice VLAN; IGMPv2/v3, MLDv1/v2 snooping; Multicast VLAN Registration (MVR); Multiple link aggregation groups (LAG) supported. |
| Routing | Static routing; Dynamic routing: RIP, OSPF, OSPFv3. |
| Security / Protection | ARP inspection; IP source guard; DHCP snooping; DoS protections; port security; loop/BPDU protection; storm control etc. |
| Management | Web UI; CLI (console, SSH, Telnet); SNMP v1/v2c/v3; LLDP/LLDP‑MED; RMON; Syslog; cloud/on‑prem platforms GDMS / GWN.Cloud / GWN Manager. |
| Power / PSU | Integrated power supply: ~60 W. Option to add external redundant power supply: RPS 12V/60W. |
| Cooling & Redundancy | Dual fans. Redundant power option. |
| Physical / Environmental | Size: 440 mm (L) × 200 mm (W) × 44 mm (H); Weight: ~ 3.15 kg; Operating temperature: 0°C to 45°C; Storage: −10°C to 60°C; Operating humidity: 10‑90% RH non‑condensing. |
| Other | Store‑and‑forward mode; DAC (direct attach copper) cable support ≤ 5 m on applicable ports; Warranty ~3 years; LED indicators for status, ports, power supply etc. |
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