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vrf: document ping usage

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Christian Poessinger 2020-03-08 10:30:13 +01:00
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docs/vrf.rst
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@ -159,6 +159,9 @@ Blackhole
Operation
=========
It is not sufficient to only configure a VRF but VRFs must be maintained, too.
For VR Fmaintenance the followin operational commands are in place.
.. opcmd:: show vrf
List VRFs that have been created
@ -172,6 +175,9 @@ Operation
bar up ee:c7:5b:fc:ae:f9 noarp,master,up,lower_up
foo up ee:bb:a4:ac:cd:20 noarp,master,up,lower_up
.. note:: Command should probably be extended to list also the real interfaces
assigned to this one VRF to get a better overview.
.. opcmd:: show vrf <name>
.. code-block:: none
@ -219,4 +225,38 @@ Operation
C>* fe80::/64 is directly connected, dum1, 00:43:19
K>* ff00::/8 [0/256] is directly connected, dum1, 00:43:19
.. opcmd:: ping <host> vrf <name>
The ping command is used to test whether a network host is reachable or not.
Ping uses ICMP protocol's mandatory ECHO_REQUEST datagram to elicit an
ICMP ECHO_RESPONSE from a host or gateway. ECHO_REQUEST datagrams (pings)
will have an IP and ICMP header, followed by "struct timeval" and an
arbitrary number of pad bytes used to fill out the packet.
When doing fault isolation with ping, your should first run it on the local
host, to verify that the local network interface is up and running. Then,
continue with hosts and gateways further down the road towards your
destination. Round-trip times and packet loss statistics are computed.
Duplicate packets are not included in the packet loss calculation, although
the round-trip time of these packets is used in calculating the minimum/
average/maximum round-trip time numbers.
Ping command can be interrupted at any given time using `<Ctrl>+c`- A brief
statistic is shown afterwards.
.. code-block:: none
vyos@vyos:~$ ping 192.0.2.1 vrf red
PING 192.0.2.1 (192.0.2.1) 56(84) bytes of data.
64 bytes from 192.0.2.1: icmp_seq=1 ttl=64 time=0.070 ms
64 bytes from 192.0.2.1: icmp_seq=2 ttl=64 time=0.078 ms
^C
--- 192.0.2.1 ping statistics ---
2 packets transmitted, 2 received, 0% packet loss, time 4ms
rtt min/avg/max/mdev = 0.070/0.074/0.078/0.004 ms
.. include:: common-references.rst