Hello !
I encounter some (huge) delay when using a border router and ethos. Here is my configuration :
SAMR21-robot <-(802.15.4)-> SAMR21-border-router <-(ethos)-> MacOS(Linux_VirtualBox)
If I ping the SAMR21-robot from the SAMR21-border-router :
> ping6 2001:db8::5841:1201:e760:2a2e ping6 2001:db8::5841:1201:e760:2a2e 12 bytes from 2001:db8::5841:1201:e760:2a2e: id=84 seq=1 hop limit=64 time = 8.417 ms 12 bytes from 2001:db8::5841:1201:e760:2a2e: id=84 seq=2 hop limit=64 time = 10.330 ms 12 bytes from 2001:db8::5841:1201:e760:2a2e: id=84 seq=3 hop limit=64 time = 10.009 ms --- 2001:db8::5841:1201:e760:2a2e ping statistics --- 3 packets transmitted, 3 received, 0% packet loss, time 2.0653132 s rtt min/avg/max = 8.417/9.585/10.330 ms
If I ping the SAMR21-robot from the MacOS(Linux_VBOX) :
> ping6 -c 3 2001:db8::5841:1201:e760:2a2e PING 2001:db8::5841:1201:e760:2a2e(2001:db8::5841:1201:e760:2a2e) 56 data bytes 64 bytes from 2001:db8::5841:1201:e760:2a2e: icmp_seq=1 ttl=63 time=196 ms 64 bytes from 2001:db8::5841:1201:e760:2a2e: icmp_seq=2 ttl=63 time=205 ms 64 bytes from 2001:db8::5841:1201:e760:2a2e: icmp_seq=3 ttl=63 time=185 ms
--- 2001:db8::5841:1201:e760:2a2e ping statistics --- 3 packets transmitted, 3 received, 0% packet loss, time 2004ms rtt min/avg/max/mdev = 185.033/195.698/205.830/8.506 ms
If I ping the SAMR21-border-router from the MacOS(Linux_VBOX) :
ping6 -c 3 fe80::221:d3ff:fe60:5a8d%tap0 PING fe80::221:d3ff:fe60:5a8d%tap0(fe80::221:d3ff:fe60:5a8d%tap0) 56 data bytes 64 bytes from fe80::221:d3ff:fe60:5a8d%tap0: icmp_seq=1 ttl=64 time=171 ms 64 bytes from fe80::221:d3ff:fe60:5a8d%tap0: icmp_seq=2 ttl=64 time=162 ms 64 bytes from fe80::221:d3ff:fe60:5a8d%tap0: icmp_seq=3 ttl=64 time=169 ms
--- fe80::221:d3ff:fe60:5a8d%tap0 ping statistics --- 3 packets transmitted, 3 received, 0% packet loss, time 2001ms rtt min/avg/max/mdev = 162.033/167.903/171.822/4.254 ms
If I ping the MacOS(Linux_VBOX) from the SAMR21-border-router :
> ping6 fe80::478:c5ff:fe20:9b6c%7 ping6 fe80::478:c5ff:fe20:9b6c%7 12 bytes from fe80::478:c5ff:fe20:9b6c: id=85 seq=1 hop limit=64 time = 87.869 ms 12 bytes from fe80::478:c5ff:fe20:9b6c: id=85 seq=2 hop limit=64 time = 90.474 ms 12 bytes from fe80::478:c5ff:fe20:9b6c: id=85 seq=3 hop limit=64 time = 92.986 ms --- fe80::478:c5ff:fe20:9b6c ping statistics --- 3 packets transmitted, 3 received, 0% packet loss, time 2.06294564 s rtt min/avg/max = 87.869/90.443/92.986 ms
One way seems to be faster than the second !
We can see that there is a problem between the Linux and the border-router. But the 802.15.4 link seems ok !
Have someone an idea of why there is so much delay ?
Cheers ! Loïc