Hi Mark, On Mon, 6 Apr 2020 at 18:51, Mark Tinka <mark.tinka@seacom.mu> wrote:
However, VMware ESXi does not support anything larger than 9,000 bytes, and that is where we run our
RR's. Since vsphere67u3 (ESXi 6.7 U3), you can set an MTU of up to 9,190 bytes: [root@esxi01o:~] esxcli network vswitch standard list vSwitch2 Name: vSwitch2 Class: cswitch Num Ports: 3456 Used Ports: 1 Configured Ports: 128 MTU: 9000 CDP Status: listen Beacon Enabled: false Beacon Interval: 1 Beacon Threshold: 3 Beacon Required By: Uplinks: Portgroups: pg-vlan204-LAB-STORAGE, pg-trunk, pg-vlan201-LAB-VMGMT [root@esxi01o:~] esxcli network vswitch standard set -m=9190 -v vSwitch2 [root@esxi01o:~] esxcli network vswitch standard list vSwitch2 Name: vSwitch2 Class: cswitch Num Ports: 3456 Used Ports: 1 Configured Ports: 128 MTU: 9190 CDP Status: listen Beacon Enabled: false Beacon Interval: 1 Beacon Threshold: 3 Beacon Required By: Uplinks: Portgroups: pg-vlan204-LAB-STORAGE, pg-trunk, pg-vlan201-LAB-VMGMT The host UI doesn't let you go >9000 bytes so (for now) you need to use the CLI. Are your FRR VM vNICs attached to standard or distributed vswitch port groups? You'll also need >9,000 byte MTU support in the vNIC driver, obviously. Cheers, Dale