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Diffstat (limited to 'docs/troubleshooting.rst')
| -rw-r--r-- | docs/troubleshooting.rst | 142 |
1 files changed, 140 insertions, 2 deletions
diff --git a/docs/troubleshooting.rst b/docs/troubleshooting.rst index 71345074..04cb9d80 100644 --- a/docs/troubleshooting.rst +++ b/docs/troubleshooting.rst @@ -85,8 +85,11 @@ Several options are available for changing the display output. Press `h` to invoke the built in help system. To quit, just press `q` and you'll be returned to the VyOS command prompt. -Monitoring Network Interfaces ------------------------------ +Monitoring +---------- + +Network Interfaces +^^^^^^^^^^^^^^^^^^ It's possible to monitor network traffic, either at the flow level or protocol level. This can be useful when troubleshooting a variety of protocols and @@ -161,6 +164,141 @@ The `unlimited` keyword is used to specify that an unlimited number of packets can be captured (by default, 1,000 packets are captured and you're returned to the VyOS command prompt). +Interface Bandwith +^^^^^^^^^^^^^^^^^^ + +to take a quick view on the used bandwith of an interface use the ``monitor bandwith`` command + +.. code-block:: sh + + vyos@vyos:~$ monitor bandwidth interface eth0 + +show the following: + +.. code-block:: sh + + eth0 bmon 3.5 + Interfaces │ RX bps pps %│ TX bps pps % + >eth0 │ 141B 2 │ 272B 1 + ───────────────────────────────┴───────────────────────┴──────────────────────────────────────────────────────────────── + B (RX Bytes/second) + 198.00 .|....|..................................................... + 165.00 .|....|..................................................... + 132.00 ||..|.|..................................................... + 99.00 ||..|.|..................................................... + 66.00 |||||||..................................................... + 33.00 |||||||..................................................... + 1 5 10 15 20 25 30 35 40 45 50 55 60 + KiB (TX Bytes/second) + 3.67 ......|..................................................... + 3.06 ......|..................................................... + 2.45 ......|..................................................... + 1.84 ......|..................................................... + 1.22 ......|..................................................... + 0.61 :::::||..................................................... + 1 5 10 15 20 25 30 35 40 45 50 55 60 + + ───────────────────────────────────────── Press d to enable detailed statistics ──────────────────────────────────────── + ─────────────────────────────────────── Press i to enable additional information ─────────────────────────────────────── + Wed Apr 3 14:46:59 2019 Press ? for help + +| Press ``d`` for more detailed informations or ``i`` for additional information. +| To exit press ``q`` and than ``y`` + +Interface performance +^^^^^^^^^^^^^^^^^^^^^ + +To take a look on the network bandwith between two nodes, the ``monitor bandwidth-test`` command is used to run iperf. + +.. code-block:: sh + + vyos@vyos:~$ monitor bandwidth-test + Possible completions: + accept Wait for bandwidth test connections (port TCP/5001) + initiate Initiate a bandwidth test + +| The ``accept`` command open a listen iperf server on TCP Port 5001 +| The ``initiate`` command conncet to this server. + +.. code-block:: sh + + vyos@vyos:~$ monitor bandwidth-test initiate + Possible completions: + <hostname> Initiate a bandwidth test to specified host (port TCP/5001) + <x.x.x.x> + <h:h:h:h:h:h:h:h> + + +Monitor command +^^^^^^^^^^^^^^^ + +The ``monitor command`` command allows you to repeatedly run a command to view a continuously refreshed output. +The command is run and output every 2 seconds, allowing you to monitor the output continuously without having to re-run the command. This can be useful to follow routing adjacency formation. + +.. code-block:: sh + + vyos@router:~$ monitor command "show interfaces" + +Will clear the screen and show you the output of ``show interfaces`` every 2 seconds. + +.. code-block:: sh + + Every 2.0s: /opt/vyatta/bin/vyatta-op-cmd-wrapper s... Sun Mar 26 02:49:46 2019 + + Codes: S - State, L - Link, u - Up, D - Down, A - Admin Down + Interface IP Address S/L Description + --------- ---------- --- ----------- + eth0 192.168.1.1/24 u/u + eth0.5 198.51.100.4/24 u/u WAN + lo 127.0.0.1/8 u/u + ::1/128 + vti0 172.32.254.2/30 u/u + vti1 172.32.254.9/30 u/u + +Clear Command +------------- + +Sometimes you need to clear counters or statistics to troubleshoot better. + +To do this use the ``clear`` command in Operational mode. + +to clear the console output + +.. code-block:: sh + + vyos@vyos:~$ clear console + +to clear interface counters + +.. code-block:: sh + + # clear all interfaces + vyos@vyos:~$ clear interface ethernet counters + # clear specific interface + vyos@vyos:~$ clear interface ehternet eth0 counters + +The command follow the same logic as the ``set`` command in configuration mode. + +.. code-block:: sh + + # clear all counters of a interface type + vyos@vyos:~$ clear interface <interface_type> counters + # clear counter of a interface in interface_type + vyos@vyos:~$ clear interface <interface_type> <interace_name> counters + + +to clear counters on firewall rulesets or single rules + +.. code-block:: sh + + vyos@vyos:~$ clear firewall name <ipv4 ruleset name> counters + vyos@vyos:~$ clear firewall name <ipv4 ruleset name> rule <rule#> counters + + vyos@vyos:~$ clear firewall ipv6-name <ipv6 ruleset name> counters + vyos@vyos:~$ clear firewall ipv6-name <ipv6 ruleset name> rule <rule#> counters + + + .. _mtr: http://www.bitwizard.nl/mtr/ .. _tshark: https://www.wireshark.org/docs/man-pages/tshark.html .. _`PCAP filter expressions`: http://www.tcpdump.org/manpages/pcap-filter.7.html |