Hi Strahil
I get:
ping: local error: Message too long, mtu=2044
ping: local error: Message too long, mtu=2044
so ip report is correct and nmcli did not the job ?
Patrick
Le 14/12/2020 ? 20:23, Strahil Nikolov via CentOS a
?crit?:> what happens when you 'ping -M do -s 65000 -c 4 <other IBoIP
system> ?
>
> Best Regards,
> Strahil Nikolov
>
>
>
>
>
>
> ? ??????????, 14 ???????? 2020 ?., 15:46:50 ???????+2, Patrick B?gou
<patrick.begou at legi.grenoble-inp.fr> ??????:
>
>
>
>
>
> Hi,
>
> I'm deploying a CentOS8 (not stream ?) cluster and I have a question
> about MTU on the interfaces. I have a connectX6 Mellanox interface where
> I need IBoIP setup.
> I've setup this interface via nmcli and set the MTU to 65520 with:
>
> ? ? nmcli connection modify ib0 mtu 65520
> ? ? nmcli connection up ib0
>
> Running "nmcli connection show ib0" report:
>
> ? ? infiniband.mtu:???????????????????????? 65520
>
> But "ip addr show ib0" report a mtu of 2044:
>
> ? ? 6: ib0: <BROADCAST,MULTICAST,UP,LOWER_UP> *mtu 2044 *qdisc mq
state
> ? ? UP group default qlen 256
>
> Why ? Who is wrong (possibly me....)?
>
> Thanks
>
> Patrick
>
> _______________________________________________
> CentOS mailing list
> CentOS at centos.org
> https://lists.centos.org/mailman/listinfo/centos
> _______________________________________________
> CentOS mailing list
> CentOS at centos.org
> https://lists.centos.org/mailman/listinfo/centos