Fast dispatch and helpful advice before we placed a multi-site order. Pricing was clear and the product arrived ready for install.
Wesley G.
Grandstream GWN7821P 8-Port PoE Layer 3 Multi-Gigabit Switch with 2 SFP+
- 8 x 2.5 Gigabit RJ45 PoE++ Ethernet ports
- 2 x 10 Gigabit SFP+ uplink ports
- Advanced Layer 3 managed switching
- Intelligent PoE++ power management
- Static routing and Layer 3 network segmentation
- VLAN, QoS, ACL, and traffic prioritisation support
- Link aggregation support
- IPv4 and IPv6 compatibility
- Cloud management via GDMS and GWN.Cloud
- Embedded local web management interface
- SNMP and CLI management support
- Enterprise-grade network security features
- Rackmount metal chassis design
Interfaces
- 8 × 2.5 Gigabit RJ45 Ethernet PoE++ ports
- 2 × 10 Gigabit SFP+ uplink ports
- Console management interface
PoE Specifications
- IEEE 802.3af/at/bt compliant PoE++
- Intelligent PoE power management
- Supports powering Wi-Fi 6/7 APs, IP phones, and IP cameras
- High PoE power budget for connected devices
Switching Performance
- Switching Capacity: 80Gbps
- Forwarding Rate: 59.52Mpps
- Layer 3 static routing support
- Advanced Layer 3 switching features
- MAC Address Table: 16K entries
- Jumbo Frame support
Layer 2 & Layer 3 Features
- VLAN support
- Inter-VLAN routing
- Link aggregation
- STP/RSTP/MSTP
- IGMP Snooping
- QoS traffic prioritisation
- Port mirroring
- Static routing
- Loop detection and prevention
Security
- ACL (Access Control Lists)
- Storm control
- DHCP Snooping
- Port isolation
- 802.1X authentication
- Anti-DoS protection
- Enterprise-grade security policies
Management
- GDMS cloud management
- GWN.Cloud management support
- Embedded local web GUI
- SNMP support
- CLI management support
Power
- Internal power supply
- Enterprise PoE++ power budget
Physical
- Rackmount metal chassis
- Designed for SMB and enterprise installations
Trusted by trade buyers
"CLI Secure has been our go-to for Fortinet hardware and renewals. Fast delivery and knowledgeable support every time."

"We ordered Grandstream phones for a full office rollout. The trade pricing and next-day delivery saved us both time and budget."

"Very professional IT networking supplier. Their pre-sales team helped us spec the right firewall for a multi-site deployment."

"Great stock availability on Hikvision cameras. Everything arrived well packaged and on time. Will order again."

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From product selection to deployment, this is made for real projects.
Get the hardware, licences and supporting kit you need without chasing multiple suppliers. CLI Secure helps trade buyers confirm fit, stock, delivery and project pricing before checkout.
Better buying value
Why trade buyers choose CLI Secure
- Trade and bulk pricing support
- Compatibility advice before purchase
- UK delivery options and account support
- Hardware, renewals and accessories in one place
- Limited project advice
- Unclear warranty or channel source
- Harder to quote bundles and renewals
- Separate suppliers for accessories
- Less flexible fulfilment for mixed baskets
- More admin for repeat trade orders
Why choose us
Procurement that feels fast, clear and trade-ready.
Every product page is designed to help you move from shortlist to checkout with fewer unknowns.
Verified buyer feedback
Trusted by installers, resellers and IT teams.
CLI Secure helped us confirm the right supporting accessories and saved us a return. Good trade service.
Keith D.Reliable fulfilment for security hardware and renewals. The team understands what business buyers need.
Rania M.Common questions
Product and order FAQs
Can I request trade or bulk pricing?
Yes. For multi-unit, reseller or project orders, contact CLI Secure and our team can review the basket for trade pricing.
How quickly can this be delivered?
Available delivery options are shown at checkout. Many in-stock products support next-day or timed UK delivery.
Can you help confirm compatibility?
Yes. Share the existing setup, model numbers or project requirement and we can help confirm suitable hardware, licences or accessories.
Do you supply renewals and supporting accessories?
CLI Secure supplies hardware, renewals, licences and related accessories across networking, CCTV, VoIP and IT support categories.





