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Cisco 4948 - Page 5

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