Network Router User Manual

2 Cisco IOS for S/390 Release 2.0 Release Notes
Enhanced Features
Enhanced Features
This section describes the new product features of Cisco IOS for S/390 release 2.0.
Improved Performance and Efficiency
• Increased throughput, reduction in CPU utilization, and inbound and outbound multiprocessing.
TCP/IP processing is now multi-threaded instead of single-threaded. This is especially
significant to FTP transmissions as it will let you obtain an aggregate transmission rate using up
to four FTP applications running at the same time on four different CPUs. Outbound processing
occurs in the dispatchable unit of the caller; Inbound processing is done on one or more SRBs to
provide multitasking and proper accountability of CPU usage.
• Capability of configuring up to 25,000 tn3270 sessions.
• CLAW performance enhancements. With a Cisco 7xxx router and a Channel Interface Processor
(CIP), large CLAW blocks can be used. Multiple packets are packed into one CLAW block to
increase performance.
Improved Management
With Cisco IOS for S/390 release 2.0 you can dynamically:
• Activate, inactivate, define, and remove virtual IP addresses
• Alter, add, or delete the real IP addresses of interfaces
• Start or stop device drivers
• Start, stop, add, or remove interfaces
• Modify message routing/filtering at component and message suffix levels
• Update message routing—for problem diagnosis situations, message logging levels and
destinations may be manipulated on the fly with operator commands
Enhanced Functionality
•
The ACPEEP trace utility has been replaced by the TRACE utility that uses the MVS Component
Trace facility, IPCS formatting routines, and an interactive TSO / component trace interface
(TCPEEP).
• NETSTAT accepts commands from TSO, Telnet, and the operator console.
• SMF records are generated at various processing points such as connection establishment,
connection termination, connection rejection, failed connection attempts, etc. for transport (TCP,
UDP, Raw), Server Telnet, FTP, storage utilization, and drivers.
• Logging of tn3270 IP address-to-LU name mapping.
• The STOP command can be used for either a graceful shutdown or for an immediate shutdown.
• Messages can be selectively displayed or suppressed on a component or type basis.
• All Cisco IOS for S/390 address spaces now record trace information onto a common TRACE
address space.