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Status Not under consideration
Workspace z/OS
Categories Communications Server
Created by Guest
Created on Mar 28, 2014

RELATED IDEAS

SYSLOGD - MTUDISCOVERY option

We'd like SYSLOGD on z/OS to use MTUDiscovery option or provide a way to set max packet size..We are seeing a lot of outbound fragmentation because of SYLOGD sending logs to another server.

From PMR:

The MTUPATHDISCOVERY option does not exist for UDP.
Since there is no handshake involved in UDP protocol the MTU size is not agreed upon by both ends. There really is no way to limit the
MTU size just for UDP datagrams. Depending on the amount of data sent it will be fragmented based on the real mTU size of the adapter. The application using the UDP doing the send can modify the udp send buffer size by issuing a setsockopt with option so_sndbuf and lowering the buffer size. This will allow the application to only send upto the set buffer size and the resulting send to through the adapter should not be frgmented.

Idea priority Medium
  • Guest
    Reply
    |     Sep 20, 2021

    This RFE would be addressed by DeveloperWorks RFE 110035 "Update SYSLOGD to support sending data via TCP" ( http://www.ibm.com/developerworks/rfe/execute?use_case=viewChangeRequest&CR_ID=110035 ), if implemented. Please vote on that RFE. This RFE will be closed.

  • Guest
    Reply
    |     Nov 19, 2015

    Due to processing by IBM, this request was reassigned to have the following updated attributes:
    Brand - Servers and Systems Software
    Product family - z Systems Software
    Product - z/OS Communications Server

    For recording keeping, the previous attributes were:
    Brand - WebSphere
    Product family - Enterprise Networking
    Product - z/OS Communications Server

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