Cisco Catalyst 4900 300-Watt DC power supply PWR-C49-300DC= 数据表
产品代码
PWR-C49-300DC=
Data Sheet
© 2009 Cisco Systems, Inc. All rights reserved. This document is Cisco Public Information.
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Features and Specifications at a Glance
Performance and Switching
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96 Gbps nonblocking switch fabric
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72 mpps Layer 2 forwarding (hardware)
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72 mpps Layer 3 and 4 forwarding: IP routing and Cisco Express Forwarding (hardware)
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Layer 2 to 4 hardware-based switch engine (application-specific integrated circuit [ASIC]-
based)
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Unicast and multicast routing entries: 32,000
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Support for 4096 active VLANs and 4096 VLAN IDs per switch
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Layer 2 multicast addresses: 16,384
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MAC addresses: 32,768
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Policers: 512 ingress and 512 egress
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Access control list (ACL) and QoS entries: 32,000
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Uplinks: 4 alternatively wired SFP ports with Cisco Gigabit EtherChannel support
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Latency: 6 microseconds for 64-byte packets
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SVIs: 2048
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Spanning Tree Protocol instances: 1500
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Internet Group Management Protocol (IGMP) snooping entries: 8000
Layer 2 Features
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Layer 2 hardware forwarding at 72 mpps
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Layer 2 switch ports and VLAN trunks
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IEEE 802. 1Q VLAN encapsulation
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Inter-Switch Link (ISL) VLAN encapsulation
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Dynamic Trunking Protocol (DTP)
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VLAN Trunking Protocol (VTP) and VTP domains
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PVST+ and Per-VLAN Rapid Spanning Tree Protocol (PVRST)
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Flexlink
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Spanning Tree PortFast and PortFast Guard
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Spanning Tree UplinkFast and BackboneFast
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IEEE 802.1s
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IEEE 802.1w
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IEEE 802.3ad
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Spanning Tree Root Guard
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Cisco Discovery Protocol Version 1 and 2
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IGMPv1, v2, and v3
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Cisco EtherChannel technology, Cisco Fast EtherChannel technology, and Cisco Gigabit
EtherChannel technology support
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Port Aggregation Protocol (PAgP)
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Link Aggregation Control Protocol (LACP)