PowerScale: Isilon: How to check if JUMBO frame is enabled in OneFS, Linux and Windows

Summary: This article describes how to check if JUMBO frame is enabled in OneFS, Linux and Windows.

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Instructions

Introduction
This article describes how to check if JUMBO frame (MTU 9000) is enabled for OneFS, Linux and Windows.

Procedure
  • OneFS
    • ping -D -s 8952(or 8972) <Destination IP address>
  • Linux
    • ping -M do -s 8952(OR 8972) <Destination IP address>
  • Windows
    • ping -l 8952(OR 8972) -f <Destination IP address>
Example (MTU 9000) 
[root@sut14 ~]# ping -M do -s 8972 10.10.10.10
PING 10.10.10.10 (10.10.10.10) 8972(9000) bytes of data.
8980 bytes from 10.10.10.10: icmp_seq=1 ttl=64 time=0.186 ms   <<< Ping Success, JUMBO frame enabled
8980 bytes from 10.10.10.10: icmp_seq=2 ttl=64 time=0.199 ms
8980 bytes from 10.10.10.10: icmp_seq=3 ttl=64 time=0.183 ms
^C
--- 10.10.10.10 ping statistics ---
3 packets transmitted, 3 received, 0% packet loss, time 38ms
rtt min/avg/max/mdev = 0.183/0.189/0.199/0.013 ms
[root@sut14 ~]# 

Example (MTU 1500) 
[root@sut14 ~]# ping -M do -s 8972 10.10.10.11
PING 10.10.10.11 (10.10.10.11) 8972(9000) bytes of data.
ping: local error: Message too long, mtu=1500   <<< Ping Failure, JUMBO frame disabled
ping: local error: Message too long, mtu=1500
ping: local error: Message too long, mtu=1500
^C
--- 10.10.10.11 ping statistics ---
3 packets transmitted, 0 received, +3 errors, 100% packet loss, time 38ms
[root@sut14 ~]#

Affected Products

PowerScale OneFS
Article Properties
Article Number: 000194177
Article Type: How To
Last Modified: 07 Jul 2025
Version:  3
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