z/VM: CP Commands and Utilities Reference - z/VM - IBM

ACTIVATE ISLINK
ACTIVATE ISLINK
►►
ACTivate
Authorization
Purpose
Operands
Usage Notes
Responses
Messages
ISLink
rdev
BUffers
BUffers
Privilege Class: B
Use the ACTIVATE ISLINK command to identify a communication link to ISFC when
it is running in the VM domain controller.
rdev
is the real device number you want to use as a link. For duplex links, you may
specify the odd or even real device number.
BUffers buffercount
specifies the number of I/O buffers to be used by a link. The default value is 16.
1. You may also need to define the real communication link to the system; see the
z/VM: CP Planning and Administration book for more information.
2. The system operator receives all informational and error messages, but not
immediate command responses.
3. Buffer counts must match when systems join. For example, link 410 on node A
connects to link 420 on node B and a buffer count of 25 is needed. The
command for system A is:
activate islink 410 buffers 25
The command for system B is:
activate islink 420 buffers 25
Note: Mismatched buffer counts can result in configuration error messages or
link hangs.
Response 1
16
Link rdev activated.
buffercount
rdev is the link address that has been activated.
Response 2
Link (rdev,rdev) activated.
16 z/VM: CP Commands and Utilities Reference
(rdev,rdev)
are the link addresses that have been activated for the duplex device.
►◄