Datasheet

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Feature Benefit
• 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 Hot Standby Router Protocol (HSRP) is supported to create redundant, failsafe routing topologies.
• Unidirectional Link Detection Protocol (UDLD) and Aggressive UDLD allow unidirectional links caused by
incorrect fiber-optic wiring or port faults to be detected and disabled on fiber-optic interfaces.
• Switch-port autorecovery (errdisable) automatically attempts to reenable a link that is disabled because of a
network error.
• Cisco RPS 675 Redundant Power System support provides superior power-source redundancy for up to 6
Cisco networking devices, resulting in improved fault tolerance and network uptime.
• Equal-cost routing for load balancing and redundancy.
• Bandwidth aggregation up to 16 Gbps through 10 Gigabit EtherChannel technology, 8 Gbps through Gigabit
EtherChannel technology, and up to 800 Mbps through Fast EtherChannel technology enhances fault
tolerance and offers higher-speed aggregated bandwidth between switches and to routers and individual
servers.
• Uplink bandwidth can be easily upgraded by adding a 10 Gigabit Ethernet version to a wiring-closet stack
and replacing the 1 Gigabit Ethernet uplinks with 10 Gigabit Ethernet without having to change fiber pairs.
High-Performance
IP Routing
• Cisco Express Forwarding hardware routing architecture delivers extremely high-performance IP routing.
• Basic IP unicast routing protocols (static, Routing Information Protocol Version 1 [RIPv1], and RIPv2) are
supported for small-network routing applications.
• IPv6 routing support in hardware for maximum performance in the future.
• Advanced IP unicast routing protocols (Open Shortest Path First [OSPF], Interior Gateway Routing Protocol
[IGRP], Enhanced IGRP [EIGRP], and Border Gateway Protocol Version 4 [BGPv4]) are supported for
load balancing and constructing scalable LANs. Enhanced Multilayer Software Image (EMI) is required.
• Policy-based routing (PBR) allows superior control by facilitating flow redirection regardless of the routing
protocol configured. EMI is required.
• HSRP provides dynamic load balancing and failover for routed links, up to 32 HSRP links supported per
unit or stack.
• Inter-VLAN IP routing for full Layer 3 routing between 2 or more VLANs.
• Protocol Independent Multicast (PIM) for IP multicast routing is supported, including PIM sparse mode
(PIM-SM), PIM dense mode (PIM-DM), and PIM sparse-dense mode. EMI is required.
• Distance Vector Multicast Routing Protocol (DVMRP) tunneling interconnects 2 multicast-enabled
networks across nonmulticast networks. EMI is required.
• Fallback bridging forwards non-IP traffic between 2 or more VLANs. EMI is required.
• Routing is possible across the stack.
• 128 switch virtual interfaces (SVIs) are recommended. Maximum of 1000 are supported (depending on the
number of routes and multicast entries). 468 routed ports are supported per stack.
Integrated Cisco IOS
Software Features for
Bandwidth Optimization
• Per-port broadcast, multicast, and unicast storm control prevents faulty end stations from degrading overall
systems performance.
• IEEE 802.1d Spanning Tree Protocol support for redundant backbone connections and loop-free networks
simplifies network configuration and improves fault tolerance.
• PVST+ allows for Layer 2 load sharing on redundant links to efficiently use the extra capacity inherent in a