参数资料
型号: ZL50408GDG2
厂商: CONEXANT SYSTEMS
元件分类: 网络接口
英文描述: DATACOM, LAN SWITCHING CIRCUIT, PBGA208
封装: 17 X 17 MM, 1.40 MM HEIGHT, LEAD FREE, MO-192, LBGA-208
文件页数: 57/144页
文件大小: 1779K
代理商: ZL50408GDG2
ZL50408
Data Sheet
2
Zarlink Semiconductor Inc.
Supports IP Multicast with IGMP snooping, up to 4 K IP Multicast groups
Supports the following spanning standards
IEEE 802.1D spanning tree
IEEE 802.1w rapid spanning tree
Supports Ethernet multicasting and broadcasting and flooding control
VLAN Support Features
Supports the following VLAN standards
port-based VLAN
IEEE 802.1Q tag-based VLAN, up to 4 K VLANs
Supports both shared VLAN learning (SVL) and independent VLAN learning (IVL) of MAC addresses
Limited support for VLAN stacking (“Q-in-Q”)
Classification and Security
Search engine classification
Classifies packets based on single field
- Source and destination L4 logical ports, or
-TOS/DS, or
- VLAN (IEEE 802.1p), or
- Physical port
Assigns a transmission priority and drop precedence
Packet filtering and security
Static address filtering for source and/or destination MAC addresses
Static MAC address not subject to aging
Secure mode freezes MAC address learning (each port may independently use this mode)
IEEE 802.1x access control
Port-based priority: VLAN priority in a tagged frame can be overwritten by the priority of port VLAN ID
Traffic Management
Two (2) transmission classes for FE ports and four (4) transmission classes for uplink port
Scheduling using weighted fair queuing (WFQ) or strict priority (SP) discipline
At egress, per-queue weighted random early discard (WRED) with 2 drop precedence levels
Configurable WRED thresholds
For FE ports, supports ingress and egress rate control
Bandwidth rationing, Bandwidth on demand, SLA (Service Level Agreement)
Granularity of rate regulation to 16 Kbps
Ingress rate regulated using WRED, with 2 drop precedence levels, or flow control
Output traffic regulation per class available on uplink port
Fully supports Differentiated Services' Expedited and Assured Forwarding (EF and AF) per-hop behaviours
Intelligent buffer management
Achieves high buffer utilization while ensuring fairness among traffic classes and ports
Buffer reservations per class and per source port
Failover Features
Rapid link failure detection using hardware-generated heartbeat packets
link failover in less than 50 ms
Supports concentration mode
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