Cisco Systems 4948 Series Predictable Performance, ∙ Shaping and sharing output queue management

∙Support for 512 policers on ingress and 512 policers on egress configured as aggregate or individual

∙Shaping and sharing output queue management

∙Dynamic Buffer Limiting (DBL): Advanced congestion avoidance

∙No performance penalty for granular QoS functions

Predictable Performance

∙96 Gbps switching fabric

∙Layer 2 hardware forwarding at 72 Mpps

∙Layer 3 hardware-based IP Cisco Express Forwarding routing at 72 Mpps

∙Layer 4 TCP or User Datagram Protocol (UDP) hardware-based filtering at 72 Mpps

∙No performance penalty with advanced Layer 3 and 4 services enabled

∙Software-based learning at a sustained rate of 500 hosts per second

∙Support for 32,768 MAC addresses

∙Support for 32,000 entries in routing table (shared between unicast and multicast)

∙Support for 512 ingress policers and 512 egress policers

∙Support for 32,000 ACL and QoS entries

∙Scalability to 2048 virtual ports (VLAN port instances)

∙Scalability to 8000 IGMP snooping entries

∙Scalability to 1500 STP instances

∙Bandwidth aggregation up to 16 Gbps through Cisco Gigabit EtherChannel technology

∙Hardware-based wire-speed multicast management

∙Hardware-based wire-speed ACLs

Comprehensive Management

∙Manageable through CiscoWorks Windows network-management software on a per-port and per-switch basis, providing a common management interface for Cisco routers, switches, and hubs

∙Manageable through Cisco Network Assistant

∙SNMPv1, v2, and v3 instrumentation, delivering comprehensive in-band management

∙Command-line interface (CLI)-based management console to provide detailed out-of-band management

∙Remote Monitoring (RMON) software agent to support four RMON groups (history, statistics, alarms, and events) for enhanced traffic management, monitoring, and analysis

∙Support for all nine RMON groups through the use of a Cisco SwitchProbe® analyzer (Switched Port Analyzer [SPAN]) port, which permits traffic monitoring of a single port, a group of ports, or the entire switch from a single network analyzer or RMON probe

∙Analysis support, including ingress port, egress port, and VLAN SPAN

∙Layer 2 traceroute

∙Remote SPAN (RSPAN)

∙Smartports macros

∙SPAN ACL filtering

∙Dynamic Host Configuration Protocol (DHCP) client autoconfiguration

∙IfIndex persistence

∙HTTPS

∙Time Domain Reflectometry (TDR)

∙MAC Address Notification

© 2006 Cisco Systems, Inc. All rights reserved.

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

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