What is the minimum value for Maximum Transmission Unit (MTU) of the AWS network hardware used with VMware Cloud on AWS?
What is the minimum value for Maximum Transmission Unit (MTU) of the AWS network hardware used with VMware Cloud on AWS?
A
Reference:
https://docs.vmware.com/en/VMware-Cloud-on-AWS/services/com.vmware.vmc-aws.networking-security/GUID-1B51A82F-1AB5-4D35-A170-
1044A3A85913.html
A is correct : https://configmax.esp.vmware.com/guest?vmwareproduct=VMware%20Cloud%20on%20AWS&release=SDDC%201.17&categories=53-0
https://docs.vmware.com/en/VMware-Cloud-on-AWS/solutions/VMware-Cloud-on-AWS.91696a39d9cb804e2888c43d538bab50/GUID-5ED7528BA47FA13CC449B2D5EB64F4FA.html
1600 is the MTU
D: from the VMC training: "AWS network hardware is configured with a minimum maximum transmission unit (MTU) of 1600+ and VLAN trunks."
D is correct. Extract from VMware VMC on AWS training course, "A maximum transmission unit (MTU) of 1,600 or more is required so that NSX-T Data Center can support the GENEVE overlay for frame encapsulation."
https://docs.vmware.com/en/VMware-Cloud-on-AWS/services/com.vmware.vmc-aws-networking-security/GUID-1B51A82F-1AB5-4D35-A170-1044A3A85913.html A- 1500 MTU
A is the Answer, key word is Minimum supported, and 1500 is by default the supported MTU. Ref: https://docs.vmware.com/en/VMware-Cloud-on-AWS/services/vmc-on-aws-networking-security.pdf
DDD: Provide an MTU size of 1600 or greater on any network that carries Geneve overlay traffic must. Geneve packets cannot be fragmented. The MTU size must be large enough to support extra encapsulation overhead.
AWS network hardware is configured with a maximum transmission unit(MTU) of 1600+ and VLAN Trunks.
A- 1500 https://docs.vmware.com/en/VMware-Cloud-on-AWS/services/com.vmware.vmc-aws-networking-security/GUID-1B51A82F-1AB5-4D35-A170-1044A3A85913.html
A - 1500 is correct they are looking for the MIN (MTU) not the MAX
A 1500
What do we have within the SDDC? Yeah NSX-T with a T0 Router and between each physical ESXi you also want to ensure that GENEVE Traffic for the Segments is working, therefore 1600 is the minimum MTU on the HW or else no Networking between the Hosts.
1500 for all. https://docs.vmware.com/en/VMware-Cloud-on-AWS/services/com.vmware.vmc-aws-networking-security/GUID-1B51A82F-1AB5-4D35-A170-1044A3A85913.html#:~:text=The%20default%20Maximum%20Transmissible%20Unit,SDDC%20networks%20is%201500%20bytes.
NSX requires 1600
A or D???