Forum Discussion
AltostratusvCMP logical interfaces throughput
Hello, we currently have 2 BIG-IP 15800 each one connected with 2 100Gb interfaces.
So i have a guest vcmp with 8vCPU and 8 logical interfaces 0.1, 0.2, 0.3 and so on to 0.8. In the cli-console or at my zabbix those interfaces are detected as 10Gb each, and i can see traffic in all of them...
My question is, are those virtual interfaces capped at 10Gb ? Or in another words, how much bandwidth do i have on this vCMP?
The hypervisor is virtualizing networking so you will see an 'interface' for each vCPU.
For standard VS's , typically a TMM can't process more then 10G of traffic, for fastl4 use cases the FPGA offload occurs before TMM.
Said another way, there isn't a hard cap on bandwidth to the guest but there are practical limits in place for most traffic use cases.
https://support.f5.com/csp/article/K03740927
6 Replies
- Brian_Van_Lieu
Employee
The hypervisor is virtualizing networking so you will see an 'interface' for each vCPU.
For standard VS's , typically a TMM can't process more then 10G of traffic, for fastl4 use cases the FPGA offload occurs before TMM.
Said another way, there isn't a hard cap on bandwidth to the guest but there are practical limits in place for most traffic use cases.
https://support.f5.com/csp/article/K03740927
danieloliveiraThak you Brian_Van_Lieu for the answer and article suggestion.
"Said another way, there isn't a hard cap on bandwidth to the guest but there are practical limits in place for most traffic use cases. " In essence are the limits of processing per vcmp and the type of traffic/layer going trough rigth ?
"typically a TMM can't process more then 10G of traffic" Can i undertand that a single vcmp even with 8vCPUs cant process more that 10G of traffic?
- Brian_Van_Lieu
TMM is threaded on the cores, so its really 10G/s (or more) per TMM. The 10G/s per TMM is a round-ish number for guidance, not an absolute.
If you have 4 TMMs, you can achieve 40Gb/s (or more).
This is very dependent of course on traffic, packet sizes, and what additional (if any) work BIG-IP is doing on the traffic as it passes through the data plane.
- buulam
Admin
Hi danieloliveira I am asking around for clarification on this for you.
Hey danieloliveira - I saw that nobody had answered your question yet, so I featured your post in this week's Highlights article, and will ask a colleague for some help.
- danieloliveira
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