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diff --git a/docs/vpp/configuration/dataplane/md-interface.md b/docs/vpp/configuration/dataplane/md-interface.md deleted file mode 100644 index 02a65ff8..00000000 --- a/docs/vpp/configuration/dataplane/md-interface.md +++ /dev/null @@ -1,104 +0,0 @@ ---- -lastproofread: '2026-02-23' ---- - -(vpp-config-dataplane-interface)= - -```{include} /_include/need_improvement.txt -``` - - -# VPP Dataplane Interfaces Configuration - -Only Ethernet interfaces (physical or virtual) can be connected to the -VPP dataplane. Interfaces configured here act as a bridge between VPP -and the outside world, allowing VPP to send and receive network -packets. - -## Interface Configuration Parameters - -Interfaces connected to the VPP dataplane use the DPDK driver by default, -providing high performance and low latency. - -```{cfgcmd} set vpp settings interface \<interface-name\> -``` - -Some network interface cards (NICs) may not be compatible with the DPDK driver. - -### DPDK interface options - -This section shows how to configure DPDK-specific settings for an interface. - -```{cfgcmd} set vpp settings interface \<interface-name\> num-rx-queues \<value\> -``` - -Specifies the number of receive queues for the interface. More queues -improve performance on multi-core systems by allowing parallel -processing of incoming packets. Each queue is assigned to a separate -CPU core. - -```{cfgcmd} set vpp settings interface \<interface-name\> num-tx-queues \<value\> -``` - -Specifies the number of transmit queues for the interface. Similar to -receive queues, more transmit queues improve performance by enabling -parallel processing of outgoing packets. By default, the VPP Dataplane -has one TX queue per enabled CPU worker, or a single queue if no -workers are configured. - -:::{seealso} -{doc}`cpu` -::: -```{cfgcmd} set vpp settings interface \<interface-name\> num-rx-desc \<value\> -``` - -Defines the size of each receive queue. Larger queue sizes accommodate -bursts of incoming traffic and reduce the likelihood of packet drops -during high traffic periods. - -```{cfgcmd} set vpp settings interface \<interface-name\> num-tx-desc \<value\> -``` - -Defines the size of each transmit queue. Larger sizes help manage -bursts of outgoing traffic more effectively. - -## Global Interface Parameters - -(vpp-config-dataplane-interface-rx-mode)= - -### interface-rx-mode - -The `interface-rx-mode` parameter defines how VPP handles incoming -packets on interfaces. There are several modes available, each with its -own advantages and use cases: -- `interrupt`: In this mode, VPP relies on hardware interrupts to - notify it of incoming packets. This mode suits low to moderate - traffic loads and reduces CPU usage during idle periods. It is not - recommended for low-latency processing. Some NICs may not support - this mode. -- `polling`: In polling mode, VPP continuously checks the interface - for incoming packets. This mode is ideal for high-throughput - scenarios where low latency is critical, as it minimizes packet - waiting time. However, it can increase CPU usage, especially during - low traffic periods, as the polling process is always active. -- `adaptive`: Adaptive mode combines the benefits of interrupt and - polling modes. VPP starts in interrupt mode and switches to polling - mode when traffic load increases. - -```{cfgcmd} set vpp settings interface-rx-mode \<mode\> -``` - -Choose an rx-mode based on expected traffic patterns and performance -requirements of your network. - -## Potential Issues and Troubleshooting - -Improper interface configuration can lead to issues such as: - -- Failure to initialize the interface -- Poor performance due to suboptimal driver selection or settings - -Indicators of such issues are: - -- Failed commits after adding or modifying an interface settings -- Low throughput or high latency on the interface |
