QuickSpecs

Link Aggregation
Tru64 UNIX incorporates support for link aggregation (also known as "trunking"). This support allows customers to combine
two or more Gigabit Ethernet ports, or two or more 10/100 Ethernet ports, into a link aggregation group (LAG). A LAG
provides an Ethernet interface capable of carrying higher aggregated data rates than any single Gigabit or 10/100 Ethernet
link. A LAG also provides high availability, with automatic failover to the remaining links in the LAG in the event of a link
failure. The link aggregation software imposes no limits on the number of Ethernet ports that may be aggregated, or on the
number of aggregations that may be created. This is limited only by the number of Ethernet ports supported by a particular
hardware platform. The software has been tested with the following switches, but should interoperate with any trunking-
capable switch:
Name Model
Cisco 6509, 6513, 352XL
3COM 4900 SX
Foundry FastIron II
Extreme Networks Summit 7i
Alteon ACE180
IP Multicast
Tru64 UNIX supports the Level 2 end-system IP Multicast functionality, specified in RFC 1112, on Ethernet and FDDI. The
implementation provides integrated multicast address management for multi-protocol environments.
The Tru64 UNIX implementation also provides kernel routines for encapsulating IP tunnels to enable wide area IP Multicast
routing.
These routines include kernel code from public domain Multicast support Version 3.5 and mrouted (Version 3 Copyright
1989 by the Board of Trustees of Leland Stanford University), which provides the Distance Vector Multicast Routing Protocol
(DVMRP).
Name Services
Tru64 UNIX supports the Domain Name System (DNS) as described in RFC 1034 and RFC 1035, providing a host name
and address lookup service for the Internet network. The Tru64 UNIX implementation of the Domain Name System is based
on BIND Version 8.2.2p5 . The user can use BIND to supplement the host's database.
Tru64 UNIX also supports the Sun™ Network Information Service (NIS), formerly known as Yellow Pages (YP). NIS can be
used to replace or supplement hosts, aliases, group, networks, password, protocols, rpc, and services databases.
Network Time Protocol (NTP)
Tru64 UNIX provides the Network Time Protocol V4.98a to synchronize and distribute the time for all machines in a network
environment.
Time Synchronization Protocol (TSP)
Tru64 UNIX provides Berkeley's Time Synchronization Protocol to synchronize the time of all machines in a network without
ensuring the accuracy of the time that is provided.
QuickSpecs
HP Tru64 UNIX Operating System Version V5.1B
Networking
DA - 11939 U.S. QuickSpecs — Version 1 — 4/8/2004 Page 14