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<TITLE>RE: [rbak-nsp] ipv6 - strange ?? (ping)</TITLE>
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<P><FONT SIZE=2>What is the source IPv6 interface for your pings?<BR>
<BR>
Is it reachable by all the destinations you are pinging?<BR>
<BR>
Also, do you have an admin acl in place on the context?<BR>
<BR>
------------------------------------------------<BR>
David Freedman<BR>
Group Network Engineering<BR>
Claranet Limited<BR>
<A HREF="http://www.clara.net">http://www.clara.net</A><BR>
<BR>
<BR>
<BR>
-----Original Message-----<BR>
From: redback-nsp-bounces@puck.nether.net on behalf of Marcin Kuczera<BR>
Sent: Sun 3/29/2009 11:41<BR>
To: redback-nsp@puck.nether.net<BR>
Subject: [rbak-nsp] ipv6 - strange ?? (ping)<BR>
<BR>
<BR>
<BR>
Look at that, I have IPv6 /32 prefix, advertised via BGP.<BR>
Both peers are UP.<BR>
Neighbor AS MsgRcvd MsgSent TblVer InQ OutQ Rst<BR>
Up/Down PfxRcvd/Sent<BR>
2001:7f8:42::a500:8545:1 8545 3095 3491 22392 0 0<BR>
14 2d01h 38 1<BR>
2a01:1d8:7fff:fffd:1::16 15744 11432 7919 22392 0 0<BR>
4 2d08h 1579 1<BR>
<BR>
My interfaces:<BR>
<BR>
Intf name: vlan101<BR>
Intf state: Up IPv6 MTU: 1500<BR>
Description: Silweb<BR>
Address: 2a01:1d8:7fff:fffd:1::15 Prefix len: 126<BR>
Link local addr:fe80::230:88ff:fe12:59f Number of Bound Circuits<BR>
(incl. dynamic) = 1<BR>
<BR>
Intf name: vlan102<BR>
Intf state: Up IPv6 MTU: 1500<BR>
Description: PLIX<BR>
Address: 2001:7f8:42::a501:3000:1 Prefix len: 64<BR>
Link local addr:fe80::230:88ff:fe12:59f Number of Bound Circuits<BR>
(incl. dynamic) = 1<BR>
<BR>
Intf name: vlan201<BR>
Intf state: Up IPv6 MTU: 1500<BR>
Description: serwerownia komercyjna<BR>
Address: 2a02:c40:1::1 Prefix len: 48<BR>
Link local addr:fe80::230:88ff:fe12:5a0 Number of Bound Circuits<BR>
(incl. dynamic) = 1<BR>
<BR>
##################<BR>
now - the problem (vlan101):<BR>
[bgp1]RedBack_SE100#ping 2a01:1d8:7fff:fffd:1::15<BR>
PING6 2a01:1d8:7fff:fffd:1::15 : 8 data bytes<BR>
timeout is 1 second, source 2a01:1d8:7fff:fffd:1::15<BR>
.....<BR>
--- 2a01:1d8:7fff:fffd:1::15 ping6 statistics ---<BR>
5 packets transmitted, 0 packets received, 100% packet loss<BR>
[bgp1]RedBack_SE100#ping 2a01:1d8:7fff:fffd:1::16<BR>
PING6 2a01:1d8:7fff:fffd:1::16 : 8 data bytes<BR>
timeout is 1 second, source 2a01:1d8:7fff:fffd:1::15<BR>
.....<BR>
--- 2a01:1d8:7fff:fffd:1::16 ping6 statistics ---<BR>
5 packets transmitted, 0 packets received, 100% packet loss<BR>
<BR>
1 2a01:1d8:7fff:fffd:1::15 3.955 ms 3.489 ms 3.761 ms<BR>
[bgp1]RedBack_SE100#trace 2a01:1d8:7fff:fffd:1::16<BR>
traceroute6 to 2a01:1d8:7fff:fffd:1::16 from 2a01:1d8:7fff:fffd:1::15,<BR>
30 hops max, 12 byte packets<BR>
1 * * *<BR>
^C[bgp1]RedBack_SE100#trace 2a01:1d8:7fff:fffd:1::15<BR>
traceroute6 to 2a01:1d8:7fff:fffd:1::15 from 2a01:1d8:7fff:fffd:1::15,<BR>
30 hops max, 12 byte packets<BR>
1 2a01:1d8:7fff:fffd:1::15 4.172 ms 1.481 ms 1.656 ms<BR>
<BR>
(vlan102):<BR>
[bgp1]RedBack_SE100#ping 2001:7f8:42::a500:8545:1<BR>
PING6 2001:7f8:42::a500:8545:1 : 8 data bytes<BR>
timeout is 1 second, source 2001:7f8:42::a501:3000:1<BR>
!!!!!<BR>
<BR>
--- 2001:7f8:42::a500:8545:1 ping6 statistics ---<BR>
5 packets transmitted, 5 packets received, 0% packet loss<BR>
round-trip min/avg/max/std-dev = 6.649/7.014/7.445/0.317 ms<BR>
[bgp1]RedBack_SE100#ping 2001:7f8:42::a501:3000:1<BR>
PING6 2001:7f8:42::a501:3000:1 : 8 data bytes<BR>
timeout is 1 second, source 2001:7f8:42::a501:3000:1<BR>
.....<BR>
--- 2001:7f8:42::a501:3000:1 ping6 statistics ---<BR>
5 packets transmitted, 0 packets received, 100% packet loss<BR>
[bgp1]RedBack_SE100#trace 2001:7f8:42::a501:3000:1<BR>
traceroute6 to 2001:7f8:42::a501:3000:1 from 2001:7f8:42::a501:3000:1,<BR>
30 hops max, 12 byte packets<BR>
1 2001:7f8:42::a501:3000:1 3.839 ms 2.355 ms 2.785 ms<BR>
<BR>
<BR>
What is going wrong ???<BR>
Is it so unstable or what ???<BR>
SEOS 6.1.4.1.p4<BR>
<BR>
<BR>
Regards,<BR>
Marcin<BR>
<BR>
<BR>
<BR>
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