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Status Future consideration
Workspace z/OS
Categories RACF
Created by Guest
Created on Nov 12, 2020

RELATED IDEAS

RRSF TCPIP stack affinity

We use RRSF on LPARs with multiple TCPIP stacks. Currently there is no way to set stack affinity so that RACF only binds to a particular stack. Without stack affinity, outbound RRSF connections initiated from a system with multiple TCPIP stacks may use any available stack and it is unpredictable which one will be chosen. There should be a configuration parameter in RACF to set TCPIP stack affinity.

Idea priority Medium
  • Guest
    Reply
    |     May 28, 2023

    This is a problem with other applications besides RRSF. Customers often use TCPIP stack affinity as a convenient way to restrict access to parts of the network. Although there are methids to set stack affinity, such as by calling BPXTCAFF in a prior job step, these methods cannot always be used and do not provide a centralised point of control.

  • Guest
    Reply
    |     Mar 23, 2023

    This is a high priority item for us as we either observe excessive access attempts against the stacks on the system for which RACF hasn't been permitted to use (up to 100! ICH408I messages at IPL time) or connections getting stuck in "operative pending verification" state as destination IPs are non-routable by the given stack.

  • Guest
    Reply
    |     Jul 15, 2022

    We have the same problem. Are there any updates?

4 MERGED

Make TCP/IP stack affinity configurable for RACF subsystem

Merged
RACF stack affinity needs to be configurable for systems running with more than one TCP/IP stack. As of now, stack selection is indirectly influenced by access to EZB.STACKACCESS profiles in CLASS(SERVAUTH) and the order in which the stacks became...
over 1 year ago in z/OS / RACF 1 Future consideration

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