(Alpha and Integrity servers) LAN_FLAGS is a bit mask used to
enable features in the local area networks port drivers and
support code. The default value for LAN_FLAGS is 0.
The bit definitions are as follows:
Bit Description
0 The default of zero indicates that ATM devices run in
SONET mode. If set to 1, this bit indicates ATM devices
run in SDH mode.
1 If set, this bit enables a subset of the ATM trace
and debug messages in the LAN port drivers and support
code.
2 If set, this bit enables all ATM trace and debug
messages in the LAN port drivers and support code.
3 If set, this bit runs UNI 3.0 over all ATM adapters.
(Auto-sensing of the ATM UNI version is enabled if both
bit 3 and bit 4 are off (0).)
4 If set, this bit runs UNI 3.1 over all ATM adapters.
(Auto-sensing of the ATM UNI version is enabled if both
bit 3 and bit 4 are off (0).)
5 If set, disables auto-negotiation over all Gigabit
Ethernet Adapters.
6 If set, enables the use of jumbo frames over all
Gigabit Ethernet Adapters.
7 Reserved.
8 If set, disables the use of flow control over all LAN
adapters that support flow control.
9 Reserved.
10 Reserved.
11 If set, disables the logging of error log entries by
LAN drivers.
12 If set, enables a fast timeout on transmit requests,
usually between 1 and 1.2 seconds instead of 3 to 4
seconds, for most LAN drivers.
13 If set, transmits that are given to the LAN device
and never completed by the device (transmit timeout
condition) are completed with error status (SS$_ABORT)
rather than success status (SS$_NORMAL).
LAN_FLAGS is a DYNAMIC parameter.