View source for Contacting an IPv6 Device

The simplest way to check, whether a ICradio ZWIR Module is online and working, is to send a simple message called ping. This will make the device sending an answer-package, which is received by the sender, if everything is working as expected. In advance the [[Preparing Network|Network must be prepared]] and the [[Getting a Modules IPv6 address|IP of the corresponding device]] must be known. '''A Gateway-device as the GW1000 ZWIR4512 can't be pinged. '''

Every PC running windows or Linux does ship a tool called ''ping6''. While the name and the functionality on both systems is similar, the parameters are different on both.

== ping6 on windows ==

To use ping6 on windows, the Hosts IPv6-address must be known to. To do this, open a Command-shell using "START => run" and enter ''cmd''.
the command ''ipconfig'' will present all information neccessary:

  C:\> ipconfig
  Windows-IP-Configuration
  
  
  Ethernetadapter LAN-Connection:
  
  	IP-address. . . . . . . . . . . . : 192.168.4.20
  	subnetmask. . . . . . . . . . . . : 255.255.255.0
  	IP-address. . . . . . . . . . . . : fe80::222:15ff:fef9:34b%5
  
  ...

The IP-address containing the colons, is the PC's IPv6 Address. ''' This address can be generated from the corresponding ZWIR-Device as described in [[Getting a Modules IPv6 address]]. '''  Using this, the corresponding module can be pinged:

  C:\> ping6 -n 6 -s fe80::222:15ff:fef9:34b%5 fe80::211:7D00:2F:c2
  Pinging fe80::211:7d00:2f:c2 from fe80::222:15ff:fef9:34b%5 
  with 32 bytes payload:
  
  Reply from fe80::211:7d00:2f:c2%5: bytes=32 time=121ms 
  Reply from fe80::211:7d00:2f:c2%5: bytes=32 time=121ms 
  Reply from fe80::211:7d00:2f:c2%5: bytes=32 time=121ms 
  Reply from fe80::211:7d00:2f:c2%5: bytes=32 time=121ms 
  Reply from fe80::211:7d00:2f:c2%5: bytes=32 time=120ms 
  Reply from fe80::211:7d00:2f:c2%5: bytes=32 time=119ms 
  ...

If there are replies, the corresponding device is able to accept connections.
The parameter ''-n'' sets the number of pings to send, 6 in the example above. The parameter ''-s'' set's the source-address and must be equal to the PCs address.

== ping6 on Linux ==

To ping from a Linux-PC, the interface name of the local network must be known. This usally is called ''eth0''. A ping6-run might look like this:

  $ ping6 -I eth0 -c 6 fe80::211:7d00:002F:00C2
  PING fe80::211:7d00:002F:00C2(fe80::211:7d00:2f:c2) from fe80::211:2fff:fed5:6abc br0: 56 data bytes
  64 bytes from fe80::211:7d00:2f:c2: icmp_seq=1 ttl=64 time=221 ms
  64 bytes from fe80::211:7d00:2f:c2: icmp_seq=2 ttl=64 time=210 ms
  64 bytes from fe80::211:7d00:2f:c2: icmp_seq=3 ttl=64 time=217 ms
  64 bytes from fe80::211:7d00:2f:c2: icmp_seq=4 ttl=64 time=221 ms
  64 bytes from fe80::211:7d00:2f:c2: icmp_seq=5 ttl=64 time=211 ms
  64 bytes from fe80::211:7d00:2f:c2: icmp_seq=6 ttl=64 time=226 ms
  
  --- fe80::211:7d00:002F:00C2 ping statistics ---
  6 packets transmitted, 6 received, 0% packet loss, time 4998ms
  rtt min/avg/max/mdev = 210.219/217.880/226.209/5.710 ms

This output shows, that the device is active and replies our pings.
The parameter ''-I'' sets the interface to use and the parameter ''-c'' set's the number of pings to send. Per default, pings will be send, until the program is interrupted, eg. by pressing <Strg>+<C>.

[[Category:ICradio_ZWIR_Modules|prep_contact]]