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.