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diff --git a/docs/troubleshooting/connectivity.rst b/docs/troubleshooting/connectivity.rst new file mode 100644 index 00000000..aa2a0151 --- /dev/null +++ b/docs/troubleshooting/connectivity.rst @@ -0,0 +1,150 @@ +################## +Connectivity Tests +################## + +************************ +Basic Connectivity Tests +************************ + +Verifying connectivity can be done with the familiar `ping` and `traceroute` +commands. The options for each are shown (the options for each command were +displayed using the built-in help as described in the :ref:`cli` +section and are omitted from the output here): + +.. opcmd:: ping <destination> + + Send ICMP echo requests to destination host. There are multiple options to + ping, including VRF support. + + .. code-block:: none + + vyos@vyos:~$ ping 10.1.1.1 + Possible completions: + <Enter> Execute the current command + adaptive Ping options + allow-broadcast + audible + bypass-route + count + deadline + do-not-fragment + flood + interface + interval + mark + no-loopback + numeric + pattern + quiet + record-route + size + timestamp + tos + ttl + verbose + vrf + + +.. opcmd:: traceroute <destination> + + Trace path to target. + + .. code-block:: none + + vyos@vyos:~$ traceroute + Possible completions: + <hostname> Track network path to specified node + <x.x.x.x> + <h:h:h:h:h:h:h:h> + ipv4 Track network path to <hostname|IPv4 address> + ipv6 Track network path to <hostname|IPv6 address> + + +*************************** +Advanced Connectivity Tests +*************************** + +.. opcmd:: monitor traceroute <destination> + + However, another helper is available which combines ping and traceroute + into a single tool. An example of its output is shown: + + .. code-block:: none + + vyos@vyos:~$ mtr 10.62.212.12 + + My traceroute [v0.85] + vyos (0.0.0.0) + Keys: Help Display mode Restart statistics Order of fields quit + Packets Pings + Host Loss% Snt Last Avg Best Wrst StDev + 1. 10.11.110.4 0.0% 34 0.5 0.5 0.4 0.8 0.1 + 2. 10.62.255.184 0.0% 34 1.1 1.0 0.9 1.4 0.1 + 3. 10.62.255.71 0.0% 34 1.4 1.4 1.3 2.0 0.1 + 4. 10.62.212.12 0.0% 34 1.6 1.6 1.6 1.7 0.0 + + .. note:: The output consumes the screen and will replace your command + prompt. + + 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. + +*********************** +IPv6 Topology Discovery +*********************** + +IPv6 uses different techniques to discover its Neighbors/topology. + +Router Discovery +================ + +.. opcmd:: force ipv6-rd interface <interface> [address <ipv6-address>] + + Discover routers via eth0. + + Example: + + .. code-block:: none + + vyos@vyos:~$ force ipv6-rd interface eth0 + Soliciting ff02::2 (ff02::2) on eth0... + + Hop limit : 60 ( 0x3c) + Stateful address conf. : No + Stateful other conf. : No + Mobile home agent : No + Router preference : high + Neighbor discovery proxy : No + Router lifetime : 1800 (0x00000708) seconds + Reachable time : unspecified (0x00000000) + Retransmit time : unspecified (0x00000000) + Prefix : 240e:fe:8ca7:ea01::/64 + On-link : Yes + Autonomous address conf.: Yes + Valid time : 2592000 (0x00278d00) seconds + Pref. time : 14400 (0x00003840) seconds + Prefix : fc00:470:f1cd:101::/64 + On-link : Yes + Autonomous address conf.: Yes + Valid time : 2592000 (0x00278d00) seconds + Pref. time : 14400 (0x00003840) seconds + Recursive DNS server : fc00:470:f1cd::ff00 + DNS server lifetime : 600 (0x00000258) seconds + Source link-layer address: 00:98:2B:F8:3F:11 + from fe80::298:2bff:fef8:3f11 + +Neighbor Discovery +================== + +.. opcmd:: force ipv6-nd interface <interface> address <ipv6-address> + + + Example: + + .. code-block:: none + + vyos@vyos:~$ force ipv6-nd interface eth0 address fc00:470:f1cd:101::1 + + Soliciting fc00:470:f1cd:101::1 (fc00:470:f1cd:101::1) on eth0... + Target link-layer address: 00:98:2B:F8:3F:11 from fc00:470:f1cd:101::1 |