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FM4112 - 24-Port Multi-Speed Ethernet Multi-Layer Switch/Router Chip
The FM4112 fully-integrated single-chip wire-speed 10-Gigabit Ethernet multi-layer switch/router chip leads the market in low-latency deep inspection, switching, and intelligent routing, delivering cut-through latency as low as 300ns. With its rich congestion management capabilities, and the ubiquity of Ethernet, the FM4112 is the key ingredient for enabling convergence within the datacenter onto a single, cost-efficient and scalable fabric. The FM4112 has 8 interfaces that can independently function in 10G XAUI, or 10/100/1000/2500 SGMII modes, and 16 interfaces that can independently function in 10/100/1000/2500 SGMII modes.
FM4112 Features
Performance
- The industry’s lowest latency
- 300ns, ball to ball with ACLs and routing enabled
- Up to 8 XAUI (CX4) interfaces
- CX4 compliant for copper cable support (up to 15m)
- Each interface supports 10/100/1000/2500 SGMII modes
- Up to 16 SGMII (CX) interfaces
- Each interface supports 10/100/1000/2500 SGMII modes
- Performance-optimized design
- Cut-through (or store-and-forward)
- 180M packets per second sustained throughput
Layer 3
- IPv4, IPv6 routing
- Up to 16K IPv4 entries; up to 4K IPv6 entries
- 16K-entry ARP table
- Fully-provisioned multicast routing
- Full VLAN replication with multicast routing
- ACL support
- L2/L3/L4 awareness
- Up to 4K extended ACLs
- Egress ACLs supported
Layer 2
- MAC addresses
- 16K-entry table
- Multiple Spanning Tree (802.1D, s, w)
- Configurable hardware aging, with lockable entries
- Robust 802.3x PAUSE flow control
- Per-port configurable
- Symmetric or asymmetric support
- Sophisticated queue management
- 8 internal priority levels (802.1P support)
- Strict priority and weighted round robin scheduling
- Multicast/broadcast with programmable storm control
- Jumbo packet support (up to 10KB)
- Extensive 802.1Q VLAN support
- 4K-entry table
- Port- or MAC-based association
- Support for Q-in-Q (double-stacked) VLANs
Switch virtualization and scaling
- Single point of management
- Remote learning
- Fat trees, meshes, rings
- Multi-chip mirroring
- Multi-chip LAG, 16 ports/group, 256 groups/system
Convergence capabilities
- Line rate classification
- L2/L3/L4 traffic classification, metering, and policing
- 802.1p, IPv4, IPv6 DSCP
- Advanced IEEE congestion management
- 802.3x class-based PAUSE flow control
- 802.3ar rate control
- Partitionable shared memory ensures traffic separation
- Flexible, multi-level scheduling
- 200 ordering queues
Security
- Port-based security (802.1X)
- MAC address security
- DOS prevention
Switch management
- MDIO, GPIO, I2C, SPI interfaces
- JTAG, and Serial LED interfaces
- Unmanaged mode
- Sophisticated statistics gathering
- RMON, priority, flow, congestion control, VLAN
Process and package
- 130 nm CMOS process technology
- 897-ball Ball Grid Array package
FM4112 Applications
The FM4112 can be used as the backplane fabric or system-level interconnect for a variety of platforms and applications, including:
- Blade computer backplane fabric (enables migration from 1G, to 2.5G, to 10G)
- Cluster interconnect
- Performance-optimized workgroup interconnect
- NAS interconnect
- ATCA platform backplane fabric (base fabric)
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