Software supports XOT and XOL for IP network connection.
Press Release Summary:
AIXlink/X.25 v2.1 allows migration from X.25 specific adapters, while allowing existing APIs to remain the same. XOT allows X.25 communication over TCP/IP networks, while XOL allows X.25 communication over Ethernet LAN adapters using IEEE 802.2 interface. Software is 64-bit enabled and supports 512 virtual circuits per port, 1,024 virtual circuits per adapter, and 4,096 virtual circuits per system.
Original Press Release:
IBM AIXlink/X.25 V2.1 Offers Enhancements for Migration from X.25 Specific Adapters That Allow APIs to Remain the Same
Overview
The AIXlink/X.25 V2.1 program is enhanced to allow the use of
Ethernet based LAN adapters. XOT allows X.25 communications over
TCP/IP networks. XOL allows X.25 communications over Ethernet LAN adapters using the IEEE 802.2 interface. These enhancements
allow the migration from X.25 specific adapters and the existing
user interfaces are retained. The enhancements replace the X.25
frame layer, which is equivalent to the data link layer in the seven-layer OSI model.
To enable connection to IP networks, AIXlink/X.25 V2.1 adds support for:
o XOT (RFC 1613: X.25 over TCP). XOT replaces the X.25 frame layer with TCP/IP based sockets.
o Logical Link Control, Type 2 (LLC2), known as XOL within this
product, replaces the X.25 frame layer with LLC2 over Ethernet
(ISO 8881). LLC2 already exists in AIX® and is implemented in
the AIX kernel with DLPI primitives.
XOL is supported on AIX network adapters that can be configured with an Ethernet (en#) network interface. XOT is supported on any AIX TCP/IP supported network adapter.
In some configurations, X.25 to IP bridging hardware is required.
AIXlink/X.25 continues the existing support of connection to public or private X.25 packet-switched data networks. The addition of support for XOT and XOL allows X.25 communication over existing IP networks or Ethernet LANs, respectively.
Key prerequisites
o Selected PowerPC systems
o POWER3(TM) systems
o POWER4(TM) systems
o POWER5(TM) systems
Planned availability date
July 23, 2004
At a glance
The AIXlink/X.25 V2.1 program adds support for XOT and XOL to
allow connection to IP networks.
o XOT (RFC 1613: X.25 over TCP)
o XOL - Logical Link Control, Type 2 (LLC2) (ISO 8881)
Other features:
o 64-bit enabled
o Enhanced problem determination capability for Network Provider Interface (NPI)
For ordering, contact:
Your IBM representative, an IBM Business Partner, or the Americas Call Centers at 800-IBM-CALL Reference: RE001
