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----
-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