Transport Optional Upgrade Release (TOUR) 2.4 Release Notes

Patches and Fixes in This Version

8606367598 When socket caching is enabled, excessive context switches are

observed on a 16-way system.

8606368342 When ARP receives an ARP request broadcast from a host, it does not

update that host’s entry in its cache. This violates RFC 826 (Ethernet

Address Resolution Protocol: Or converting network protocol

addresses to 48.bit Ethernet address for transmission on Ethernet

hardware).

8606369254 When X.25 and ACC products installed, the system can panic in the

unselect_enh() routine with a stack trace.

8606369649 The netstat -a command takes lot of time to display the network

status.

8606370407 When a network program sends large data through a high speed

interface (such as, a gigabit Ethernet) for a long time, the network

program may hang.

8606374624 The performance of network intensive applications may become less

scalable due to a CPU that is busy processing interrupts from a

network interface.

8606377054 If the receiver is advertising an available window and has

acknowledge all the data that has already been sent, no more data

can be sent throughout the TCP connection. The write() function may

block the TCP socket.

8606380508 Duplicate ACKs do not trigger retransmission of data in the

LAST_ACK state.

8606386707 There is a memory leak in the ALLOCB_MBLK_SM arena.

8606386954 When TOUR 2.4 is removed, the /dev/tun* files are not removed

properly.

8606377902 (fixed

for TOUR 2.3)

An HP-UX system advertises an incorrect window size, when an

HP-UX system initiates a TCP connection with the window scaling

option and with a window size of 65535 bytes, and if the remote host

does not respond with the window scaling option in the SYN/ACK

packet.

Table 2 Transport Fixes Included in TOUR 2.4 (Continued)

SR Number Description