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I'm trying to set the MTU value for my network interface in FreeNAS-11.3-U3.2 to 9000.

However, when I select the interface to EDIT in the WebUI, enter 9000 for the MTU field, then click "APPLY", I get the following error.

VALLIDATION ERRORS:
[EINVAL] interface_update.aliases.0: The network 192.168.1.0/24 is already in use by another interface.

NOTE: I previously was unable to configure the interface via the WEBUI when setting the IP (resulting in the same error), and successfully set the interface via the freenas console.

Is there a setting I need to change in order to enable network configuration (specifically MTU) for network interfaces in the WEBUI?

Or, alternatively, how can I set the MTU value?

UPDATE: looks like I was able to set mtu=9000 via the shell, but isn't persistent after reboot.

# update interface mtu
ifconfig em0 10.20.110.2 mtu 9000

# NAS to {OTHER MACHINE WITH 10GbE}
# ping -D -s 8972 {OTHER MACHINE WITH 10GbE}
PING {OTHER MACHINE WITH 10GbE} ({OTHER MACHINE WITH 10GbE}): 8972 data bytes
8980 bytes from {OTHER MACHINE WITH 10GbE}: icmp_seq=0 ttl=64 time=0.538 ms
8980 bytes from {OTHER MACHINE WITH 10GbE}: icmp_seq=1 ttl=64 time=1.221 ms
8980 bytes from {OTHER MACHINE WITH 10GbE}: icmp_seq=2 ttl=64 time=0.557 ms
8980 bytes from {OTHER MACHINE WITH 10GbE}: icmp_seq=3 ttl=64 time=1.310 ms
monkut
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  • Are you trying to change the MTU on the interface you’re connected to? – Vinícius Ferrão Jul 06 '20 at 04:16
  • I've tried both, from the interface I'm connected to and from an interface that's different, both result in the same error. – monkut Jul 06 '20 at 04:33
  • What other interface was configured with that network? – Michael Hampton Jul 06 '20 at 04:35
  • I have three interfaces, 2 connected at the moment, set to ips 192.168.1.(20|21|22) with same netmask. As mentioned I wasn't initially able to configure these IPs through the WebUI (with the same error), and ended up setting them directly through the console. – monkut Jul 06 '20 at 04:57
  • Do you have any bridge or LACP aggregation configured? – Mircea Vutcovici Jul 06 '20 at 05:43
  • Thanks, no, I don't have any LACP configured, these are 2 separate interfaces. I did notice poking around that when I tried, `/etc/rc.d/netif restart INTERFACE` I get the message, "_Cannot 'restart' netif. Set netif_enable to YES in /etc/rc.conf or use 'onerestart' instaed of 'restart'". – monkut Jul 06 '20 at 06:48

0 Answers0