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Flexlink provides link redundancy with convergence time less than 100 milliseconds.
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IEEE 802.1s/w Rapid Spanning Tree Protocol (RSTP) and Multiple Spanning Tree Protocol (MSTP)
provide rapid spanning-tree convergence independent of spanning-tree timers and also offer the benefit of
Layer 2 load balancing and distributed processing. Stacked units behave as a single spanning-tree node.
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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.
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Cisco Hot Standby Router Protocol (HSRP) is supported to create redundant, fail safe routing topologies
in 2960-XR IP-Lite SKUs.
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Switch-port auto-recovery (Error Disable) automatically attempts to reactivate a link that is disabled
because of a network error.
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Power redundancy with an optional second power supply on 2960-XR models, or with an external RPS on
2960-X models.
Enhanced Quality of Service
The Cisco Catalyst 2960-X Series Switches offers intelligent traffic management that keeps everything flowing
smoothly. Flexible mechanisms for marking, classification, and scheduling deliver superior performance for data,
voice, and video traffic, all at wire speed. Primary QoS features include:
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Up to eight egress queues per port and strict priority queuing so that the highest priority packets are
serviced ahead of all other traffic.
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Shaped Round Robin (SRR) scheduling and Weighted Tail Drop (WTD) congestion avoidance.
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Flow-based rate limiting and up to 256 aggregate or individual policers per port.
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802.1p class of service (CoS) and Differentiated Services Code Point (DSCP) classification, with
marking and reclassification on a per-packet basis by source and destination IP address, MAC address, or
Layer 4 TCP/UDP port number.
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Cross-stack QoS to allow QoS to be configured across a stack of 2960-X series switches.
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The Cisco committed information rate (CIR) function provides bandwidth in increments as low as 8 Kbps.
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Rate limiting is provided based on source and destination IP address, source and destination MAC
address, Layer 4 TCP/UDP information, or any combination of these fields, using QoS ACLs (IP ACLs or
MAC ACLs), class maps, and policy maps.
Cisco Catalyst 2960-X Series Switching Database Manager
Switching database manager (SDM) templates for LAN Base and IP Lite licenses allows the administrator to
automatically optimize the ternary content-addressable memory (TCAM) allocation to the desired features based
on deployment-specific requirements. MAC, routing, security, and QoS scalability numbers depend on the type of
template used in the switch.
Table 3. Cisco Catalyst 2960-X Family LAN Lite and LAN Base Scalability Numbers
IPv4 Unicast Direct Routes
IPv4 Unicast Indirect Routes
IPv6 Unicast Direct Routes
(11 pages)
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