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Essentials, a Web-based management tool, offers automated inventory collection, software deployment, easy tracking of network changes, views

into device availability, and quick isolation of error conditions.

PRODUCT FEATURES AND BENEFITS

Feature

Benefit

Availability

IEEE 802.1D Spanning Tree Protocol support for redundant backbone connections and loop-free networks simplifies

Superior

network configuration and improves fault tolerance.

Redundancy

Support for Cisco Spanning Tree Protocol enhancements such as UplinkFast, BackboneFast, and PortFast technologies

for Fault Backup

helps to ensure quick fail-over recovery, enhancing overall network stability and availability.

IEEE 802.1w Rapid Spanning Tree Protocol (RSTP) provides rapid convergence of the spanning tree, independent of

spanning-tree timers.

Per VLAN Rapid Spanning Tree (PVRST+) allows rapid spanning-tree reconvergence on a per-VLAN spanning-tree

basis, without requiring the implementation of spanning-tree instances.

Cisco CrossStack UplinkFast technology extends UplinkFast to a stack to ensure quick fail-over recovery, enhancing

network stability and availability.

Support for Cisco's optional RPS 675, 675-watt redundant AC power system, which provides a backup power source

for one of six switches, for improved fault tolerance and network uptime.

Redundant stacking connections provide support for a redundant loopback connection for top and bottom switches in

an independent stack backplane cascaded configuration.

Provides unidirectional link detection (UDLD) and Aggressive aggressive UDLD for detecting and disabling

unidirectional links on fiber-optic interfaces caused by incorrect fiber-optic wiring or port faults.

Bandwidth aggregation up to 4 Gbps (two ports full duplex) through Gigabit EtherChannel technology and up to 16

Integrated

Gbps (eight ports full duplex) through Fast EtherChannel technology enhances fault tolerance and offers higher-speed

Cisco IOS

aggregated bandwidth between switches, to routers and individual servers. Port Aggregation Protocol (PAgP) is available

Software

to simplify configuration.

Features for

VLAN1 minimization allows VLAN1 to be disabled on any individual VLAN trunk link.

Bandwidth

Optimization

Per-port broadcast, multicast, and unicast storm control prevent faulty end stations from degrading overall systems

performance.

Per virtual LAN (VLAN) Spanning Tree Plus (PVST+ allows for Layer 2 load sharing on redundant links, to efficiently

use the extra capacity inherent in a redundant design.

IEEE 802.1s Multiple Spanning Tree Protocol (MSTP) allows a spanning-tree instance per VLAN, enabling Layer 2

load sharing on redundant links.

VLAN Trunking Protocol (VTP) pruning limits bandwidth consumption on VTP trunks by flooding broadcast traffic

only on trunk links required to reach the destination devices. Dynamic Trunking Protocol (DTP) enables dynamic trunk

configuration across all ports in the switch.

Internet Group Management Protocol version 3 (IGMPv3) snooping provides for fast client joins and leaves of multicast

streams, and limits bandwidth-intensive video traffic to only the requestors. Multicast VLAN Registration MVR, IGMP

filtering, and fast-join and immediate leave are available as enhancements. The number of IGMP groups can be limited

with IGMP throttling. IGMP Snooping time can be adjusted to optimize the performance of multicast data flows

MVR continuously sends multicast streams in a multicast VLAN while isolating the streams from subscriber VLANs

for bandwidth and security reasons.

Supports additional frame formats: Ethernet II (tagged and untagged) and 802.3 (Subnetwork Access Protocol [SNAP]

encapsulated tagged and untagged frames).

Important notices, privacy statements, and trademarks of Cisco Systems, Inc. can be found on cisco.com.

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