Windows 2000 TCP/IP

Standard Features and Performance Enhancements

Windows 2000 TCP/IP supports the following standard features:

Ability to bind to multiple network adapters with different media types
Logical and physical multihoming
Internal IP routing capability
Internet Group Management Protocol (IGMP) Version 2 (support for IP multicasting)
Duplicate IP address detection
Internet Control Message Protocol (ICMP) Router Discovery
Multiple configurable default gateways
Dead gateway detection for TCP traffic
Automatic Path Maximum Transmission Unit (PMTU) discovery for TCP connections
IP Security (IPSec)
Quality of Service (QoS)
TCP/IP over ATM services.
Virtual Private Networks (VPNs)

In addition, Windows 2000 has the following new performance enhancements:

Increased default window sizes
TCP Scalable Window sizes
Selective Acknowledgments (SACK)
TCP Fast Retransmit
RTT (Round Trip Time) and RTO (Retransmission Timeout) calculation improvements.