Cisco Systems 4948 Manual De Usuario
© 2005 Cisco Systems, Inc. All rights reserved.
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Page 5 of 14
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IGMP v1, v2, and v3
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IGMP filtering on access and trunk ports
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IP Multicast routing protocols: PIM, SSM, and Distance Vector Multicast Routing Protocol (DVMRP)
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Pragmatic General Multicast (PGM)
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Cisco Group Multicast Protocol server
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Full Internet Control Message Protocol (ICMP) support
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ICMP Router Discovery Protocol
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Policy-based routing (PBR)
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Virtual Route Forwarding lite (VRF-lite)
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IPv6 (software switched)
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OSPF fast convergence
Sophisticated QoS and Traffic Management
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Per-port QoS configuration
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Support for four queues per port
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Strict priority queuing
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IP differentiated services code point (DSCP)
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Classification and marking based on IP type of service (ToS) or DSCP
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Classification and marking based on full Layer 3 and Layer 4 headers
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Input and output policing based on Layer 3 and Layer 4 headers
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Support for 512 policers on ingress and 512 policers on egress
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Shaping and sharing output queue management
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DBL—congestion-avoidance feature
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No performance penalty for granular QoS functions
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Per-port, per-vlan QoS
Predictable Performance
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136 Gbps switching fabric
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Layer 2 hardware forwarding at 102 mpps
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Layer 3 hardware-based IP Cisco Express Forwarding routing at 102 mpps
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Layer 4 TCP/User Datagram Protocol (UDP) hardware-based filtering at 102 mpps
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No performance penalty with advanced Layer 3 and Layer 4 services enabled
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Software-based learning at a sustained rate of 3000 hosts per second
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Support for 55,000 unicast and 16000 multicast MAC addresses
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Support for 32,000 entries in routing table (shared between unicast and multicast)
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Scalability to 2000 virtual ports (VLAN port instances)
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Bandwidth aggregation up to 40 Gbps using Cisco Gigabit Ethernet EtherChannel technology
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Hardware-based multicast management
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Hardware-based ACLs, router ACLs (RACLs), VLAN ACLs
Comprehensive Management
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Manageable through Cisco Network Assistant
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Single console port and single IP address to manage all system features
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Software configuration management, including local and remote storage