Question & Answer
Question
What will be the behavioral changes when there are different MTU sizes configured in a communication group?
Mismatched MTU sizes configured in a communication group is an unsupported configuration. As per RSCT admin guide, all network interfaces attached to the same subnet over which RSCT traffic may pass must be configured to use the same MTU (maximum transmission unit) size. For more information on this, you can refer to the undermentioned link:
You can check MTU size using undermentioned command
ifconfig -a
# ifconfig -a
ens192: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
inet 172.20.155.11 netmask 255.255.255.0 broadcast 172.20.155.255
inet6 fe80::250:56ff:feb9:b0e1 prefixlen 64 scopeid 0x20<link>
ether 00:50:56:b9:b0:e1 txqueuelen 1000 (Ethernet)
RX packets 5643308 bytes 2019789825 (1.8 GiB)
RX errors 0 dropped 1848 overruns 0 frame 0
TX packets 3734521 bytes 2933511615 (2.7 GiB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
ens192: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
inet 172.20.155.11 netmask 255.255.255.0 broadcast 172.20.155.255
inet6 fe80::250:56ff:feb9:b0e1 prefixlen 64 scopeid 0x20<link>
ether 00:50:56:b9:b0:e1 txqueuelen 1000 (Ethernet)
RX packets 5643308 bytes 2019789825 (1.8 GiB)
RX errors 0 dropped 1848 overruns 0 frame 0
TX packets 3734521 bytes 2933511615 (2.7 GiB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
lo: flags=73<UP,LOOPBACK,RUNNING> mtu 65536
inet 127.0.0.1 netmask 255.0.0.0
inet6 ::1 prefixlen 128 scopeid 0x10<host>
loop txqueuelen 1 (Local Loopback)
RX packets 796 bytes 278761 (272.2 KiB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 796 bytes 278761 (272.2 KiB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
inet 127.0.0.1 netmask 255.0.0.0
inet6 ::1 prefixlen 128 scopeid 0x10<host>
loop txqueuelen 1 (Local Loopback)
RX packets 796 bytes 278761 (272.2 KiB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 796 bytes 278761 (272.2 KiB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
[{"Type":"MASTER","Line of Business":{"code":"LOB77","label":"Automation Platform"},"Business Unit":{"code":"BU048","label":"IBM Software"},"Product":{"code":"SSRM2X","label":"Tivoli System Automation for Multiplatforms"},"ARM Category":[{"code":"a8m500000008avFAAQ","label":"RSCT"},{"code":"a8m0z0000001fxlAAA","label":"lssam-\u003Elssam hung"}],"ARM Case Number":"","Platform":[{"code":"PF002","label":"AIX"},{"code":"PF016","label":"Linux"}],"Version":"4.1.0;and future releases"}]
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Product Synonym
TSAMP
RSCT
TSA
Tivoli
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Document Information
Modified date:
11 March 2022
UID
ibm16555346