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Diffstat (limited to 'doc/guides/nics/tap.rst')
| -rw-r--r-- | doc/guides/nics/tap.rst | 13 |
1 files changed, 12 insertions, 1 deletions
diff --git a/doc/guides/nics/tap.rst b/doc/guides/nics/tap.rst index 5c5ba535..f3ee95d2 100644 --- a/doc/guides/nics/tap.rst +++ b/doc/guides/nics/tap.rst @@ -46,7 +46,7 @@ These TAP interfaces can be used with Wireshark or tcpdump or Pktgen-DPDK along with being able to be used as a network connection to the DPDK application. The method enable one or more interfaces is to use the ``--vdev=net_tap0`` option on the DPDK application command line. Each -``--vdev=net_tap1`` option give will create an interface named dtap0, dtap1, +``--vdev=net_tap1`` option given will create an interface named dtap0, dtap1, and so on. The interface name can be changed by adding the ``iface=foo0``, for example:: @@ -58,6 +58,17 @@ needed, but the interface does not enforce that speed, for example:: --vdev=net_tap0,iface=foo0,speed=25000 +Normally the PMD will generate a random MAC address, but when testing or with +a static configuration the developer may need a fixed MAC address style. +Using the option ``mac=fixed`` you can create a fixed known MAC address:: + + --vdev=net_tap0,mac=fixed + +The MAC address will have a fixed value with the last octet incrementing by one +for each interface string containing ``mac=fixed``. The MAC address is formatted +as 00:'d':'t':'a':'p':[00-FF]. Convert the characters to hex and you get the +actual MAC address: ``00:64:74:61:70:[00-FF]``. + It is possible to specify a remote netdevice to capture packets from by adding ``remote=foo1``, for example:: |