[rbak-nsp] ipv6 - strange ?? (ping)

[David Freedman]

What is the source IPv6 interface for your pings? 

Is it reachable by all the destinations you are pinging?

Also, do you have an admin acl in place on the context?

------------------------------------------------
David Freedman
Group Network Engineering 
Claranet Limited
http://www.clara.net



-----Original Message-----
From: redback-nsp-bounces at puck.nether.net on behalf of Marcin Kuczera
Sent: Sun 3/29/2009 11:41
To: redback-nsp at puck.nether.net
Subject: [rbak-nsp] ipv6 - strange ?? (ping)
 


Look at that, I have IPv6 /32 prefix, advertised via BGP.
Both peers are UP.
Neighbor              AS  MsgRcvd  MsgSent    TblVer  InQ OutQ Rst 
Up/Down  PfxRcvd/Sent
2001:7f8:42::a500:8545:1     8545     3095     3491     22392    0    0 
  14    2d01h     38      1
2a01:1d8:7fff:fffd:1::16    15744    11432     7919     22392    0    0 
   4    2d08h   1579      1

My interfaces:

Intf name:      vlan101
Intf state:     Up                        IPv6 MTU:       1500 
       Description:    Silweb
Address:        2a01:1d8:7fff:fffd:1::15  Prefix len:     126 
       Link local addr:fe80::230:88ff:fe12:59f  Number of Bound Circuits 
(incl. dynamic) = 1

Intf name:      vlan102
Intf state:     Up                        IPv6 MTU:       1500 
       Description:    PLIX
Address:        2001:7f8:42::a501:3000:1  Prefix len:     64 
       Link local addr:fe80::230:88ff:fe12:59f  Number of Bound Circuits 
(incl. dynamic) = 1

Intf name:      vlan201
Intf state:     Up                        IPv6 MTU:       1500 
       Description:    serwerownia komercyjna
Address:        2a02:c40:1::1             Prefix len:     48 
       Link local addr:fe80::230:88ff:fe12:5a0  Number of Bound Circuits 
(incl. dynamic) = 1

##################
now - the problem (vlan101):
[bgp1]RedBack_SE100#ping 2a01:1d8:7fff:fffd:1::15
PING6 2a01:1d8:7fff:fffd:1::15 : 8 data bytes
timeout is 1 second, source 2a01:1d8:7fff:fffd:1::15
.....
--- 2a01:1d8:7fff:fffd:1::15 ping6 statistics ---
5 packets transmitted, 0 packets received, 100% packet loss
[bgp1]RedBack_SE100#ping 2a01:1d8:7fff:fffd:1::16
PING6 2a01:1d8:7fff:fffd:1::16 : 8 data bytes
timeout is 1 second, source 2a01:1d8:7fff:fffd:1::15
.....
--- 2a01:1d8:7fff:fffd:1::16 ping6 statistics ---
5 packets transmitted, 0 packets received, 100% packet loss

1  2a01:1d8:7fff:fffd:1::15  3.955 ms  3.489 ms  3.761 ms
[bgp1]RedBack_SE100#trace 2a01:1d8:7fff:fffd:1::16
traceroute6 to 2a01:1d8:7fff:fffd:1::16 from 2a01:1d8:7fff:fffd:1::15, 
30 hops max, 12 byte packets
1  * * *
^C[bgp1]RedBack_SE100#trace 2a01:1d8:7fff:fffd:1::15
traceroute6 to 2a01:1d8:7fff:fffd:1::15 from 2a01:1d8:7fff:fffd:1::15, 
30 hops max, 12 byte packets
1  2a01:1d8:7fff:fffd:1::15  4.172 ms  1.481 ms  1.656 ms

(vlan102):
[bgp1]RedBack_SE100#ping 2001:7f8:42::a500:8545:1
PING6 2001:7f8:42::a500:8545:1 : 8 data bytes
timeout is 1 second, source 2001:7f8:42::a501:3000:1
!!!!!

--- 2001:7f8:42::a500:8545:1 ping6 statistics ---
5 packets transmitted, 5 packets received, 0% packet loss
round-trip min/avg/max/std-dev = 6.649/7.014/7.445/0.317 ms
[bgp1]RedBack_SE100#ping 2001:7f8:42::a501:3000:1
PING6 2001:7f8:42::a501:3000:1 : 8 data bytes
timeout is 1 second, source 2001:7f8:42::a501:3000:1
.....
--- 2001:7f8:42::a501:3000:1 ping6 statistics ---
5 packets transmitted, 0 packets received, 100% packet loss
[bgp1]RedBack_SE100#trace 2001:7f8:42::a501:3000:1
traceroute6 to 2001:7f8:42::a501:3000:1 from 2001:7f8:42::a501:3000:1, 
30 hops max, 12 byte packets
1  2001:7f8:42::a501:3000:1  3.839 ms  2.355 ms  2.785 ms


What is going wrong ???
Is it so unstable or what ???
SEOS 6.1.4.1.p4


Regards,
Marcin



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