[6bone] Problems with big packets!?

[Jørgen Hovland]

Try setting the MTU to 1480

Joergen Hovland

On Fri, 4 Oct 2002, Alvaro Vives wrote:

> Hi all,
>
> We've a host connected to 6BONE through a tunnel. The traceroute6 and ping6
> to 3ffe:3328:6:2b01::a100 works fine, BUT if we try:
>
> #ping6 -s 5000 3ffe:3328:6:2b01::a100
>
> ALL the packets are lost! (-s specifies the size in bytes).
>
> We tried ping6 (-s 5000 & -s 1000) to each node in the route, and in one of
> them seems to be the problem:
>
> 2001:660:1102:4007::2
>
> Somebody else have experienced this?
>
> Regards,
>
> Alvaro.
>
> Se the pings and traceroute below:
>
> # ping6 -s 1000 3ffe:3328:6:2b01::a100
> PING 3ffe:3328:6:2b01::a100(3ffe:3328:6:2b01::a100) from
> 2001:470:1f00:ffff::213 : 1000 data bytes
> 1008 bytes from 3ffe:3328:6:2b01::a100: icmp_seq=0 hops=58 time=843.811 msec
> 1008 bytes from 3ffe:3328:6:2b01::a100: icmp_seq=1 hops=58 time=878.117 msec
> 1008 bytes from 3ffe:3328:6:2b01::a100: icmp_seq=2 hops=58 time=858.146 msec
>
> --- 3ffe:3328:6:2b01::a100 ping statistics ---
> 3 packets transmitted, 3 packets received, 0% packet loss
>
>
> # ping6 -s 5000 3ffe:3328:6:2b01::a100
> PING 3ffe:3328:6:2b01::a100(3ffe:3328:6:2b01::a100) from
> 2001:470:1f00:ffff::213 : 5000 data bytes
>
> --- 3ffe:3328:6:2b01::a100 ping statistics ---
> 7 packets transmitted, 0 packets received, 100% packet loss
> ------------------------------------------
> # traceroute6 3ffe:3328:6:2b01::a100
> traceroute to 3ffe:3328:6:2b01::a100 (3ffe:3328:6:2b01::a100) from
> 2001:470:1f00:ffff::213, 30 hops max, 16 byte packets
>  1  viperpan.tunnel.tserv1.fmt.ipv6.he.net (2001:470:1f00:ffff::212)
> 338.498 ms  287.976 ms  274.952 ms
>  2  rtr1.ipv6.he.net (3ffe:81d0:ffff::2)  279.843 ms  278.591 ms  259.885 ms
>  3  3ffe:8070:1:13::1 (3ffe:8070:1:13::1)  359.978 ms  384.063 ms *
>  4  2001:660:1102:4007::2 (2001:660:1102:4007::2)  625.084 ms  534.236 ms
> 499.932 ms
>  5  3ffe:3300::29:2 (3ffe:3300::29:2)  839.862 ms  759.19 ms  744.743 ms
>  6  3ffe:3328:6:2::4 (3ffe:3328:6:2::4)  799.886 ms  749.333 ms  885.018 ms
>  7  3ffe:3328:6:3::2 (3ffe:3328:6:3::2)  729.746 ms  749.217 ms  704.883 ms
>  8  3ffe:3300::28:a (3ffe:3300::28:a)  704.972 ms  719.274 ms  689.917 ms
>  9  3ffe:3328:6:2b01::a100 (3ffe:3328:6:2b01::a100)  754.837 ms  729.23 ms
> 839.888 ms
> ------------------------------------------
> # ping6 -s 1000 2001:470:1f00:ffff::212
> PING 2001:470:1f00:ffff::212(2001:470:1f00:ffff::212) from
> 2001:470:1f00:ffff::213 : 1000 data bytes
> 1008 bytes from 2001:470:1f00:ffff::212: icmp_seq=0 hops=64 time=341.984
> msec
> 1008 bytes from 2001:470:1f00:ffff::212: icmp_seq=1 hops=64 time=367.666
> msec
> 1008 bytes from 2001:470:1f00:ffff::212: icmp_seq=2 hops=64 time=417.688
> msec
>
> --- 2001:470:1f00:ffff::212 ping statistics ---
> 3 packets transmitted, 3 packets received, 0% packet loss
>
>
> # ping6 -s 5000 2001:470:1f00:ffff::212
> PING 2001:470:1f00:ffff::212(2001:470:1f00:ffff::212) from
> 2001:470:1f00:ffff::213 : 5000 data bytes
> 5008 bytes from 2001:470:1f00:ffff::212: icmp_seq=0 hops=64 time=478.822
> msec
> 5008 bytes from 2001:470:1f00:ffff::212: icmp_seq=1 hops=64 time=492.336
> msec
> 5008 bytes from 2001:470:1f00:ffff::212: icmp_seq=2 hops=64 time=492.383
> msec
> 5008 bytes from 2001:470:1f00:ffff::212: icmp_seq=3 hops=64 time=392.413
> msec
>
> --- 2001:470:1f00:ffff::212 ping statistics ---
> 4 packets transmitted, 4 packets received, 0% packet loss
> ------------------------------------------
> # ping6 -s 1000 3ffe:81d0:ffff::2
> PING 3ffe:81d0:ffff::2(3ffe:81d0:ffff::2) from 2001:470:1f00:ffff::213 :
> 1000 data bytes
> 1008 bytes from 3ffe:81d0:ffff::2: icmp_seq=0 hops=63 time=271.892 msec
> 1008 bytes from 3ffe:81d0:ffff::2: icmp_seq=1 hops=63 time=460.268 msec
> 1008 bytes from 3ffe:81d0:ffff::2: icmp_seq=2 hops=63 time=310.296 msec
>
> --- 3ffe:81d0:ffff::2 ping statistics ---
> 3 packets transmitted, 3 packets received, 0% packet loss
>
>
> # ping6 -s 5000 3ffe:81d0:ffff::2
> PING 3ffe:81d0:ffff::2(3ffe:81d0:ffff::2) from 2001:470:1f00:ffff::213 :
> 5000 data bytes
> 5008 bytes from 3ffe:81d0:ffff::2: icmp_seq=0 hops=63 time=536.436 msec
> 5008 bytes from 3ffe:81d0:ffff::2: icmp_seq=1 hops=63 time=651.132 msec
> 5008 bytes from 3ffe:81d0:ffff::2: icmp_seq=2 hops=63 time=511.162 msec
>
> --- 3ffe:81d0:ffff::2 ping statistics ---
> 3 packets transmitted, 3 packets received, 0% packet loss
> ------------------------------------------
> # ping6 -s 1000 3ffe:8070:1:13::1
> PING 3ffe:8070:1:13::1(3ffe:8070:1:13::1) from 2001:470:1f00:ffff::213 :
> 1000 data bytes
> 1008 bytes from 3ffe:8070:1:13::1: icmp_seq=0 hops=62 time=454.961 msec
> 1008 bytes from 3ffe:8070:1:13::1: icmp_seq=1 hops=62 time=525.919 msec
> 1008 bytes from 3ffe:8070:1:13::1: icmp_seq=2 hops=62 time=505.954 msec
>
> --- 3ffe:8070:1:13::1 ping statistics ---
> 3 packets transmitted, 3 packets received, 0% packet loss
>
>
> # ping6 -s 5000 3ffe:8070:1:13::1
> PING 3ffe:8070:1:13::1(3ffe:8070:1:13::1) from 2001:470:1f00:ffff::213 :
> 5000 data bytes
> 5008 bytes from 3ffe:8070:1:13::1: icmp_seq=0 hops=62 time=634.059 msec
> 5008 bytes from 3ffe:8070:1:13::1: icmp_seq=1 hops=62 time=653.610 msec
>
> --- 3ffe:8070:1:13::1 ping statistics ---
> 2 packets transmitted, 2 packets received, 0% packet loss
> ------------------------------------------
> # ping6 -s 1000 2001:660:1102:4007::2
> PING 2001:660:1102:4007::2(2001:660:1102:4007::2) from
> 2001:470:1f00:ffff::213 : 1000 data bytes
> 1008 bytes from 2001:660:1102:4007::2: icmp_seq=0 hops=60 time=568.278 msec
> 1008 bytes from 2001:660:1102:4007::2: icmp_seq=1 hops=60 time=578.146 msec
> 1008 bytes from 2001:660:1102:4007::2: icmp_seq=2 hops=60 time=534.845 msec
>
> --- 2001:660:1102:4007::2 ping statistics ---
> 3 packets transmitted, 3 packets received, 0% packet loss
>
>
> # ping6 -s 5000 2001:660:1102:4007::2
> PING 2001:660:1102:4007::2(2001:660:1102:4007::2) from
> 2001:470:1f00:ffff::213 : 5000 data bytes
>
> --- 2001:660:1102:4007::2 ping statistics ---
> 13 packets transmitted, 0 packets received, 100% packet loss
> ------------------------------------------
>
>
>
> ***********************************************************
> Madrid 2002 Global IPv6 Summit
> See all the documents on line at:
> www.ipv6-es.com
>
>
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