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<P><FONT SIZE=2>Well, I would be interested to know if the problem goes away if you shutdown/deconfigure vlan102<BR>
(and optionally clear nd cache as well)<BR>
<BR>
If not then it is more likely to be a bug.<BR>
<BR>
Dave.<BR>
<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: Marcin Kuczera [<A HREF="mailto:marcin@leon.pl">mailto:marcin@leon.pl</A>]<BR>
Sent: Sun 3/29/2009 13:57<BR>
To: David Freedman<BR>
Cc: redback-nsp@puck.nether.net<BR>
Subject: Re: [rbak-nsp] ipv6 - strange ?? (ping)<BR>
<BR>
David Freedman wrote:<BR>
> Can you paste output of your "show nd int" and "show nd neighbor" ?<BR>
<BR>
[bgp1]RedBack_SE100#show nd interface<BR>
Intf Grid Mac Address Status Circuit IPv6 Address<BR>
0x10000003 00:30:88:12:05:9f Up 2/1:1023:63/1/2/12<BR>
2a01:1d8:7fff:fffd:1::15/126<BR>
0x10000004 00:00:10:0b:31:21 Up 2/1:1023:63/1/2/13<BR>
2001:7f8:42::a501:3000:1/64<BR>
0x10000014 00:30:88:12:05:a0 Up 2/2:1023:63/1/2/40 2a02:c40:1::1/48<BR>
[bgp1]RedBack_SE100#show nd ne<BR>
[bgp1]RedBack_SE100#show nd neighbor<BR>
IPv6 Address Age Link-layer Addr State Circuit<BR>
2001:7f8:42::a500:8545:1 17 00:0c:29:d0:86:68 reach 2/1<BR>
vlan-id 102<BR>
2001:7f8:42::a501:3000:1 0 00:00:10:0b:31:21 intf 2/1<BR>
vlan-id 102<BR>
2a01:1d8:7fff:fffd:1::15 0 00:30:88:12:05:9f intf 2/1<BR>
vlan-id 101<BR>
2a01:1d8:7fff:fffd:1::16 5 00:21:59:0c:2e:72 reach 2/1<BR>
vlan-id 101<BR>
2a02:c40:1::1 0 00:30:88:12:05:a0 intf 2/2<BR>
vlan-id 201<BR>
2a02:c40:1::2 39 00:02:b3:26:44:95 reach 2/2<BR>
vlan-id 201<BR>
fe80::20e:38ff:fe67:f908 0 00:0e:38:67:f9:08 incmp 2/1<BR>
vlan-id 102<BR>
fe80::230:88ff:fe12:59e 0 00:30:88:12:05:9f intf 2/1<BR>
vlan-id 101<BR>
fe80::230:88ff:fe12:5a0 0 00:30:88:12:05:a0 intf 2/2<BR>
vlan-id 201<BR>
[bgp1]RedBack_SE100#<BR>
<BR>
(link-local for vlan101 is modified by me)<BR>
<BR>
MArcin<BR>
<BR>
<BR>
<BR>
<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: Marcin Kuczera [<A HREF="mailto:marcin@leon.pl">mailto:marcin@leon.pl</A>]<BR>
> Sent: Sun 3/29/2009 13:39<BR>
> To: David Freedman<BR>
> Cc: redback-nsp@puck.nether.net<BR>
> Subject: Re: [rbak-nsp] ipv6 - strange ?? (ping)<BR>
><BR>
> David Freedman wrote:<BR>
> ><BR>
> > Your output is a bit hard to parse , but I can see you have two link<BR>
> > local addresses the same :<BR>
> ><BR>
> > > Intf name: vlan101<BR>
> > > Link local addr:fe80::230:88ff:fe12:59f Number of Bound<BR>
> Circuits<BR>
> > ><BR>
> > > Intf name: vlan102<BR>
> > > Link local addr:fe80::230:88ff:fe12:59f Number of Bound<BR>
> Circuits<BR>
><BR>
> you are right, that's strage.. but - assigned automatically<BR>
><BR>
> > Can you ping vlan201 (which has a different link-local)?<BR>
><BR>
> nope..<BR>
> [bgp1]RedBack_SE100#ping 2a02:c40:1::1<BR>
> PING6 2a02:c40:1::1 : 8 data bytes<BR>
> timeout is 1 second, source 2a02:c40:1::1<BR>
> .....<BR>
> --- 2a02:c40:1::1 ping6 statistics ---<BR>
> 5 packets transmitted, 0 packets received, 100% packet loss<BR>
> [bgp1]RedBack_SE100#<BR>
><BR>
> > According to RFC, these should be "scoped" if they are going to be<BR>
> > shared, but I don't<BR>
> > see any evidence of scoping going on here.<BR>
> ><BR>
> > As a test, can you try changing link-local address of one of the vlans<BR>
> > to something else?<BR>
><BR>
> I did, but it didn't help...<BR>
><BR>
> Marcin<BR>
><BR>
><BR>
><BR>
> > Dave.<BR>
> ><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: Marcin Kuczera [<A HREF="mailto:marcin@leon.pl">mailto:marcin@leon.pl</A>]<BR>
> > Sent: Sun 3/29/2009 12:58<BR>
> > To: David Freedman<BR>
> > Cc: redback-nsp@puck.nether.net<BR>
> > Subject: Re: [rbak-nsp] ipv6 - strange ?? (ping)<BR>
> ><BR>
> > David Freedman wrote:<BR>
> > ><BR>
> > > What is the source IPv6 interface for your pings?<BR>
> ><BR>
> > Look - the ping goes to the other end of p2p interface (vlan102 is p2mp,<BR>
> > because it is IX).<BR>
> > So - i.e. for vlan101 if I ping 2a01:1d8:7fff:fffd:1::16, the source is<BR>
> > 2a01:1d8:7fff:fffd:1::15 (from outgoing interface, just like in ipv4).<BR>
> ><BR>
> > > Is it reachable by all the destinations you are pinging?<BR>
> ><BR>
> > yes, I'am pinging point-to-point ends..<BR>
> > The biggest problem is with... pinging myself !<BR>
> ><BR>
> > > Also, do you have an admin acl in place on the context?<BR>
> ><BR>
> > no ACLs.<BR>
> ><BR>
> > At the first interface setup (vlan101) both ends were responding, after<BR>
> > adding vlan102 ipv6 everything started behaving strange..<BR>
> ><BR>
> > Regards,<BR>
> > Marcin<BR>
> ><BR>
> ><BR>
> ><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 <BR>
> 0 0<BR>
> > > 14 2d01h 38 1<BR>
> > > 2a01:1d8:7fff:fffd:1::16 15744 11432 7919 22392 <BR>
> 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<BR>
> 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<BR>
> 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<BR>
> 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>
> > > _______________________________________________<BR>
> > > redback-nsp mailing list<BR>
> > > redback-nsp@puck.nether.net<BR>
> > > <A HREF="https://puck.nether.net/mailman/listinfo/redback-nsp">https://puck.nether.net/mailman/listinfo/redback-nsp</A><BR>
> > ><BR>
> ><BR>
> ><BR>
><BR>
><BR>
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