Hi Mark, On Mon, 6 Apr 2020 at 18:51, Mark Tinka <mark.ti...@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
