+++ /dev/null
-## Creating VPP Startup Configuration
-This document describes how to create the VPP startup configuration
-file located at `/etc/vpp/contiv-vswitch.conf`.
-
-### Hardware Interface Configuration
-#### Single-NIC Configuration
-You need to configure hardware interfaces for use by VPP. First, find out the PCI address of the host's network interface. On
-Debian-based distributions, you can use `lshw`:
-
-```
-sudo lshw -class network -businfo
-Bus info Device Class Description
-========================================================
-pci@0000:03:00.0 ens160 network VMXNET3 Ethernet Controller
-```
-
-In our case, it would be the `ens3` interface with the PCI address
-`0000:00:03.0`
-
-Now, add or modify the VPP startup config file (`/etc/vpp/contiv-vswitch.conf`)
-to contain the proper PCI address:
-```
-unix {
- nodaemon
- cli-listen /run/vpp/cli.sock
- cli-no-pager
- coredump-size unlimited
- full-coredump
- poll-sleep-usec 100
-}
-nat {
- endpoint-dependent
-}
-dpdk {
- dev 0000:00:03.0
-}
-api-trace {
- on
- nitems 500
-}
-```
-#### Multi-NIC Configuration
-Similar to the single-NIC configuration, use command *lshw* to find the PCI
-addresses of all the NICs in the system, for example:
-
-```
-$ sudo lshw -class network -businfo
-Bus info Device Class Description
-====================================================
-pci@0000:00:03.0 ens3 network Virtio network device
-pci@0000:00:04.0 ens4 network Virtio network device
-```
-
-In the example above, `ens3` would be the primary interface and `ens4` would
-be the interface that would be used by VPP. The PCI address of the `ens4`
-interface would be `0000:00:04.0`.
-
-Make sure the selected interface is *shut down*, otherwise VPP
-will not grab it:
-```
-sudo ip link set ens4 down
-```
-
-Now, add or modify the VPP startup config file in `/etc/vpp/contiv-vswitch.conf`
-to contain the proper PCI address:
-```
-unix {
- nodaemon
- cli-listen /run/vpp/cli.sock
- cli-no-pager
- coredump-size unlimited
- full-coredump
- poll-sleep-usec 100
-}
-nat {
- endpoint-dependent
-}
-dpdk {
- dev 0000:00:04.0
-}
-api-trace {
- on
- nitems 500
-}
-```
-If assigning multiple NICs to VPP you will need to include each NIC's PCI address
-in the dpdk stanza in `/etc/vpp/contiv-vswitch.conf`.
-
-##### Assigning all NICs to VPP
-On a multi-NIC node, it is also possible to assign all NICs from the kernel for
-use by VPP. First, you need to install the STN daemon, as described [here][1],
-since you will want the NICs to revert to the kernel if VPP crashes.
-
-You also need to configure the NICs in the VPP startup config file
-in `/etc/vpp/contiv-vswitch.conf`. For example, to use both the primary and
-secondary NIC, in a two-NIC node, your VPP startup config file would look
-something like this:
-
-```
-unix {
- nodaemon
- cli-listen /run/vpp/cli.sock
- cli-no-pager
- coredump-size unlimited
- full-coredump
- poll-sleep-usec 100
-}
-nat {
- endpoint-dependent
-}
-dpdk {
- dev 0000:00:03.0
- dev 0000:00:04.0
-}
-api-trace {
- on
- nitems 500
-}
-```
-
-#### Installing `lshw` on CentOS/RedHat/Fedora
-Note: On CentOS/RedHat/Fedora distributions, `lshw` may not be available
-by default, install it by
-```
-sudo yum -y install lshw
-```
-
-### Power-saving Mode
-In regular operation, VPP takes 100% of one CPU core at all times (poll loop).
-If high performance and low latency is not required you can "slow-down"
-the poll-loop and drastically reduce CPU utilization by adding the following
-stanza to the `unix` section of the VPP startup config file:
-```
-unix {
- ...
- poll-sleep-usec 100
- ...
-}
-```
-The power-saving mode is especially useful in VM-based development environments
-running on laptops or less powerful servers.
-
-### VPP API Trace
-To troubleshoot VPP configuration issues in production environments, it is
-strongly recommended to configure VPP API trace. This is done by adding the
-following stanza to the VPP startup config file:
-```
-api-trace {
- on
- nitems 500
-}
-```
-You can set the size of the trace buffer with the <nitems> attribute.
Code Review / vpp.git / blobdiff