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two paragraphs are defined about the mirror option, removed the paragraph having the older cli structure. (cherry picked from commit c7d52cf762def52fecf9d1ec08dff61032dabd86)
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8.9 KiB
ReStructuredText
274 lines
8.9 KiB
ReStructuredText
:lastproofread: 2023-01-20
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.. _ethernet-interface:
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########
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Ethernet
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########
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This will be the most widely used interface on a router carrying traffic to the
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real world.
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*************
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Configuration
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*************
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Common interface configuration
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==============================
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.. cmdinclude:: /_include/interface-common-with-dhcp.txt
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:var0: ethernet
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:var1: eth0
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Ethernet options
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================
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.. cfgcmd:: set interfaces ethernet <interface> duplex <auto | full | half>
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Configure physical interface duplex setting.
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* auto - interface duplex setting is auto-negotiated
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* full - always use full-duplex
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* half - always use half-duplex
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VyOS default will be `auto`.
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.. cfgcmd:: set interfaces ethernet <interface> speed <auto | 10 | 100 | 1000 |
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2500 | 5000 | 10000 | 25000 | 40000 | 50000 | 100000>
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Configure physical interface speed setting.
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* auto - interface speed is auto-negotiated
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* 10 - 10 MBit/s
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* 100 - 100 MBit/s
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* 1000 - 1 GBit/s
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* 2500 - 2.5 GBit/s
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* 5000 - 5 GBit/s
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* 10000 - 10 GBit/s
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* 25000 - 25 GBit/s
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* 40000 - 40 GBit/s
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* 50000 - 50 GBit/s
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* 100000 - 100 GBit/s
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VyOS default will be `auto`.
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Offloading
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----------
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.. cfgcmd:: set interfaces ethernet <interface> offload <gro | gso | sg | tso |
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ufo | rps>
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Enable different types of hardware offloading on the given NIC.
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:abbr:`GSO (Generic Segmentation Offload)` is a pure software offload that is
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meant to deal with cases where device drivers cannot perform the offloads
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described above. What occurs in GSO is that a given skbuff will have its data
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broken out over multiple skbuffs that have been resized to match the MSS
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provided via skb_shinfo()->gso_size.
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Before enabling any hardware segmentation offload a corresponding software
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offload is required in GSO. Otherwise it becomes possible for a frame to be
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re-routed between devices and end up being unable to be transmitted.
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:abbr:`GRO (Generic receive offload)` is the complement to GSO. Ideally any
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frame assembled by GRO should be segmented to create an identical sequence of
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frames using GSO, and any sequence of frames segmented by GSO should be able
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to be reassembled back to the original by GRO. The only exception to this is
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IPv4 ID in the case that the DF bit is set for a given IP header. If the
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value of the IPv4 ID is not sequentially incrementing it will be altered so
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that it is when a frame assembled via GRO is segmented via GSO.
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:abbr:`RPS (Receive Packet Steering)` is logically a software implementation
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of :abbr:`RSS (Receive Side Scaling)`. Being in software, it is necessarily
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called later in the datapath. Whereas RSS selects the queue and hence CPU that
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will run the hardware interrupt handler, RPS selects the CPU to perform
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protocol processing above the interrupt handler. This is accomplished by
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placing the packet on the desired CPU's backlog queue and waking up the CPU
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for processing. RPS has some advantages over RSS:
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- it can be used with any NIC,
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- software filters can easily be added to hash over new protocols,
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- it does not increase hardware device interrupt rate (although it does
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introduce inter-processor interrupts (IPIs)).
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.. note:: In order to use TSO/LRO with VMXNET3 adaters one must also enable
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the SG offloading option.
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Authentication (EAPoL)
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----------------------
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.. cmdinclude:: /_include/interface-eapol.txt
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:var0: ethernet
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:var1: eth0
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VLAN
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====
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Regular VLANs (802.1q)
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----------------------
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.. cmdinclude:: /_include/interface-vlan-8021q.txt
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:var0: ethernet
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:var1: eth0
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QinQ (802.1ad)
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--------------
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.. cmdinclude:: /_include/interface-vlan-8021ad.txt
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:var0: ethernet
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:var1: eth0
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Port Mirror (SPAN)
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==================
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.. cmdinclude:: ../../_include/interface-mirror.txt
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:var0: ethernet
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:var1: eth1
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:var2: eth3
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*********
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Operation
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*********
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.. opcmd:: show interfaces ethernet
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Show brief interface information.
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.. code-block:: none
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vyos@vyos:~$ show interfaces ethernet
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Codes: S - State, L - Link, u - Up, D - Down, A - Admin Down
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Interface IP Address S/L Description
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--------- ---------- --- -----------
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eth0 172.18.201.10/24 u/u LAN
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eth1 172.18.202.11/24 u/u WAN
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eth2 - u/D
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.. opcmd:: show interfaces ethernet <interface>
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Show detailed information on given `<interface>`
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.. code-block:: none
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vyos@vyos:~$ show interfaces ethernet eth0
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eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP group default qlen 1000
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link/ether 00:50:44:00:f5:c9 brd ff:ff:ff:ff:ff:ff
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inet6 fe80::250:44ff:fe00:f5c9/64 scope link
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valid_lft forever preferred_lft forever
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RX: bytes packets errors dropped overrun mcast
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56735451 179841 0 0 0 142380
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TX: bytes packets errors dropped carrier collisions
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5601460 62595 0 0 0 0
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.. stop_vyoslinter
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.. opcmd:: show interfaces ethernet <interface> physical
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Show information about physical `<interface>`
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.. code-block:: none
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vyos@vyos:~$ show interfaces ethernet eth0 physical
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Settings for eth0:
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Supported ports: [ TP ]
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Supported link modes: 1000baseT/Full
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10000baseT/Full
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Supported pause frame use: No
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Supports auto-negotiation: No
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Supported FEC modes: Not reported
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Advertised link modes: Not reported
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Advertised pause frame use: No
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Advertised auto-negotiation: No
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Advertised FEC modes: Not reported
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Speed: 10000Mb/s
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Duplex: Full
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Port: Twisted Pair
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PHYAD: 0
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Transceiver: internal
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Auto-negotiation: off
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MDI-X: Unknown
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Supports Wake-on: uag
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Wake-on: d
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Link detected: yes
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driver: vmxnet3
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version: 1.4.16.0-k-NAPI
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firmware-version:
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expansion-rom-version:
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bus-info: 0000:0b:00.0
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supports-statistics: yes
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supports-test: no
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supports-eeprom-access: no
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supports-register-dump: yes
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supports-priv-flags: no
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.. start_vyoslinter
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.. opcmd:: show interfaces ethernet <interface> physical offload
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Show available offloading functions on given `<interface>`
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.. code-block:: none
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vyos@vyos:~$ show interfaces ethernet eth0 physical offload
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rx-checksumming on
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tx-checksumming on
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tx-checksum-ip-generic on
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scatter-gather off
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tx-scatter-gather off
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tcp-segmentation-offload off
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tx-tcp-segmentation off
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tx-tcp-mangleid-segmentation off
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tx-tcp6-segmentation off
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udp-fragmentation-offload off
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generic-segmentation-offload off
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generic-receive-offload off
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large-receive-offload off
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rx-vlan-offload on
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tx-vlan-offload on
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ntuple-filters off
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receive-hashing on
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tx-gre-segmentation on
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tx-gre-csum-segmentation on
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tx-udp_tnl-segmentation on
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tx-udp_tnl-csum-segmentation on
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tx-gso-partial on
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tx-nocache-copy off
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rx-all off
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.. opcmd:: show interfaces ethernet <interface> transceiver
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Show transceiver information from plugin modules, e.g SFP+, QSFP
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.. code-block:: none
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vyos@vyos:~$ show interfaces ethernet eth5 transceiver
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Identifier : 0x03 (SFP)
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Extended identifier : 0x04 (GBIC/SFP defined by 2-wire interface ID)
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Connector : 0x07 (LC)
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Transceiver codes : 0x00 0x00 0x00 0x01 0x00 0x00 0x00 0x00 0x00
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Transceiver type : Ethernet: 1000BASE-SX
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Encoding : 0x01 (8B/10B)
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BR, Nominal : 1300MBd
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Rate identifier : 0x00 (unspecified)
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Length (SMF,km) : 0km
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Length (SMF) : 0m
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Length (50um) : 550m
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Length (62.5um) : 270m
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Length (Copper) : 0m
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Length (OM3) : 0m
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Laser wavelength : 850nm
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Vendor name : CISCO-FINISAR
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Vendor OUI : 00:90:65
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Vendor PN : FTRJ-8519-7D-CS4
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Vendor rev : A
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Option values : 0x00 0x1a
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Option : RX_LOS implemented
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Option : TX_FAULT implemented
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Option : TX_DISABLE implemented
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BR margin, max : 0%
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BR margin, min : 0%
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Vendor SN : FNS092xxxxx
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Date code : 0506xx
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