The Extreme Networks Summit 400-48T is a Layer 3 stackable Gigabit Ethernet switch delivering 160 Gbps switching fabric capacity and 101 Mpps forwarding rate across 48 ports of 10/100/1000Base-T connectivity. Four SFP uplink slots provide flexibility for high-speed interconnection, with optional 10 Gigabit daughter card support via XENPAK I/O modules. Built for enterprise networks handling converged traffic—IP telephony, video, wireless LANs—the switch combines advanced traffic management with high availability through UniStack technology for logical chassis-based operation across multiple units.
## Technical Specifications
• **Switching Fabric:** 160 Gbps
• **Forwarding Rate:** 101 Mpps
• **Network Ports:** 48 × 10/100/1000Base-T Gigabit Ethernet
• **Uplink Ports:** 4 × SFP Gigabit Ethernet slots
• **Maximum Frame Size:** 9216 bytes (Jumbo Frames)
• **MAC Address Table:** 16,000 entries
• **Layer 3 Forwarding Database:** 4,000 hardware entries
• **Layer 3 Routing Table:** 64,000 entries
• **Stacking:** UniStack technology supported
## Key Features
• **VLAN Support:** 4096 VLANs (port-based, IEEE 802.1Q, MAC-based)
• **Access Control:** 5,520 total ACL rules; 115 rules per port; Layer 2/3/4 filtering on MAC address, IP source/destination, TCP/UDP port
• **Quality of Service:** 8 queues per port; DiffServ and IEEE 802.1p (CoS) classification and marking
• **Rate Limiting:** 5,800 central rate limiters with policy-based mapping across Layers 1–4; DiffServ rewriting capability
• **Link Aggregation:** 8 trunks × 8 members per trunk
• **High Availability:** Ethernet Automatic Protection Switching (EAPS) for sub-second Layer 2 resiliency
## Typical Applications
Enterprise campus networks, data center access layers, converged infrastructure supporting voice, video, and wireless; multi-site deployments leveraging UniStack for unified management and increased bandwidth.
## Compatibility & Integration
Integrates with Extreme Networks Summit 400 series switches via UniStack technology. Optional 10 Gigabit daughter card with XENPAK module support extends uplink capacity.
