Switch Configuration
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-For VLAN encapsulation, the 2 corresponding ports on the switch(es) facing the Trex ports on the Linux server should be configured in trunk mode (NFVbench will instruct TRex to insert the appropriate vlan tag).
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-For VxLAN encapsulation, the switch(es) must support the VTEP feature (VxLAN Tunnel End Point) with the ability to attach an interface to a VTEP (this is an advanced feature that requires an NFVbench plugin for the switch).
+The 2 corresponding ports on the switch(es) facing the Trex ports on the Linux server should be configured in trunk mode (NFVbench will instruct TRex to insert the appropriate vlan tag).
Using a TOR switch is more representative of a real deployment and allows to measure packet flows on any compute node in the rack without rewiring and includes the overhead of the TOR switch.
- for Trex, pre-allocate 1024 huge pages of 2MB each (for a total of 2GB): "hugepagesz=2M hugepages=1024"
More detailed instructions can be found in the DPDK documentation (https://media.readthedocs.org/pdf/dpdk/latest/dpdk.pdf).
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-NFVbench loopback VM image Upload
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-The NFVbench loopback VM image should be uploaded to OpenStack prior to running NFVbench.
-The NFVbench VM qcow2 image can be rebuilt from script or can be copied from the OPNFV artifact repository [URL TBP].