Simon Lockhart wrote: > Noticed that 12.2(44)SE was recently released for the Cat3550 switch, and > feature navigator lists a whole load of IPv6 support. Yay! > > However, it doesn't seem to work very well... > > interface Loopback0 > no ip address > ipv6 address 2001:4B10::100/128 > ipv6 enable > end > > lab-sw.rbsov#ping 2001:4b10::100 > Type escape sequence to abort. > Sending 5, 100-byte ICMP Echos to 2001:4B10::100, timeout is 2 seconds: > !!!!! > Success rate is 100 percent (5/5), round-trip min/avg/max = 0/2/4 ms > > However, if I try to do IPv6 over an ethernet port, it's less successful... > > interface Vlan515 > no ip address > ipv6 address 2001:4B10:0:2::2/64 > ipv6 enable > end > > lab-sw.rbsov#ping 2001:4b10:0:2::1 > Type escape sequence to abort. > Sending 5, 100-byte ICMP Echos to 2001:4B10:0:2::1, timeout is 2 seconds: > ..... > Success rate is 0 percent (0/5) > > Running "debug ipv6 packet" on both ends of the link shows packets being > sent by lab-sw, and replies being sent by the upstream switch (a 3560), but > the 3550 never learns any neighbours, and pings don't work... > > lab-sw.rbsov#show ipv6 nei > lab-sw.rbsov# > > Have I missed something needed to make this work, or is it just a work in > progress, released prematurely? > > Simon
Can you do a tcp dump/wireshark for ether proto 0x86dd and see whether neigh discoveries are happening? Atleast in my network, when I ping 3750 with unicast routing enabled and ipv6 nd enabled, from within a VLAN I see neigh solicitation and neighbor discovery happening followed by echo req and echo reply. When you do show ipv6 nei and nothing is happening, I believe neighbor discovery has not happened for some unknown reason The following may be relevant to you or may not be, but this is what I am seeing command(s) used: sudo tcpdump -ennNSXxv -s 1518 -i pcn0 ether proto 0x86dd $ ping6 fdc2:c2cd:d343:39a6:21c:fff:fea6:6348 PING6(56=40+8+8 bytes) fdc2:c2cd:d343:39a6:20c:29ff:fe20:b1ff --> fdc2:c2cd:d343:39a6:21c:fff:fea6:6348 16 bytes from fdc2:c2cd:d343:39a6:21c:fff:fea6:6348, icmp_seq=0 hlim=64 time=3.565 ms 16 bytes from fdc2:c2cd:d343:39a6:21c:fff:fea6:6348, icmp_seq=1 hlim=64 time=1.056 ms ^C --- fdc2:c2cd:d343:39a6:21c:fff:fea6:6348 ping6 statistics --- 2 packets transmitted, 2 packets received, 0.0% packet loss round-trip min/avg/max/std-dev = 1.056/2.310/3.565/1.255 ms 10:14:10.752467 00:0c:29:20:b1:ff 33:33:ff:a6:63:48 86dd 86: fdc2:c2cd:d343:39a6:20c:29ff:fe20:b1ff > ff02::1:ffa6:6348: icmp6: neighbor sol: who has fdc2:c2cd:d343:39a6:21c:fff:fea6:6348(src lladdr: 00:0c:29:20:b1:ff) (len 32, hlim 255) 0000: 6000 0000 0020 3aff fdc2 c2cd d343 39a6 `.... :ÿýÂÂÍÓC9¦ 0010: 020c 29ff fe20 b1ff ff02 0000 0000 0000 ..)ÿþ ±ÿÿ....... 0020: 0000 0001 ffa6 6348 8700 4f59 0000 0000 ....ÿ¦cH..OY.... 0030: fdc2 c2cd d343 39a6 021c 0fff fea6 6348 ýÂÂÍÓC9¦...ÿþ¦cH 0040: 0101 000c 2920 b1ff ....) ±ÿ 10:14:10.752504 00:1c:0f:a6:63:48 00:0c:29:20:b1:ff 86dd 86: fdc2:c2cd:d343:39a6:21c:fff:fea6:6348 > fdc2:c2cd:d343:39a6:20c:29ff:fe20:b1ff: icmp6: neighbor adv: tgt is fdc2:c2cd:d343:39a6:21c:fff:fea6:6348(RSO)(tgt lladdr: 00:1c:0f:a6:63:48) [class 0xe0] (len 32, hlim 255) 0000: 6e00 0000 0020 3aff fdc2 c2cd d343 39a6 n.... :ÿýÂÂÍÓC9¦ 0010: 021c 0fff fea6 6348 fdc2 c2cd d343 39a6 ...ÿþ¦cHýÂÂÍÓC9¦ 0020: 020c 29ff fe20 b1ff 8800 f5e7 e000 0000 ..)ÿþ ±ÿ..õçà... 0030: fdc2 c2cd d343 39a6 021c 0fff fea6 6348 ýÂÂÍÓC9¦...ÿþ¦cH 0040: 0201 001c 0fa6 6348 .....¦cH 10:14:10.753431 00:0c:29:20:b1:ff 00:1c:0f:a6:63:48 86dd 70: fdc2:c2cd:d343:39a6:20c:29ff:fe20:b1ff > fdc2:c2cd:d343:39a6:21c:fff:fea6:6348: icmp6: echo request (len 16, hlim 64) 0000: 6000 0000 0010 3a40 fdc2 c2cd d343 39a6 `.....:@ýÂÂÍÓC9¦ 0010: 020c 29ff fe20 b1ff fdc2 c2cd d343 39a6 ..)ÿþ ±ÿýÂÂÍÓC9¦ 0020: 021c 0fff fea6 6348 8000 5833 1e9c 0000 ...ÿþ¦cH..X3.... 0030: 47a3 6172 000b 7499 G£ar..t. 10:14:10.753926 00:1c:0f:a6:63:48 00:0c:29:20:b1:ff 86dd 70: fdc2:c2cd:d343:39a6:21c:fff:fea6:6348 > fdc2:c2cd:d343:39a6:20c:29ff:fe20:b1ff: icmp6: echo reply (len 16, hlim 64) 0000: 6000 0000 0010 3a40 fdc2 c2cd d343 39a6 `.....:@ýÂÂÍÓC9¦ 0010: 021c 0fff fea6 6348 fdc2 c2cd d343 39a6 ...ÿþ¦cHýÂÂÍÓC9¦ 0020: 020c 29ff fe20 b1ff 8100 5733 1e9c 0000 ..)ÿþ ±ÿ..W3.... 0030: 47a3 6172 000b 7499 G£ar..t. 10:14:11.088588 00:1c:0f:a6:63:48 33:33:00:00:00:05 86dd 90: fe80::21c:fff:fea6:6348 > ff02::5: OSPFv3-hello 36: rtrid 10.57.127.2 backbone V6/E/R ifid 0.0.8.186 pri 1 int 10 dead 40 dr 10.57.127.2 nbrs [class 0xe0] [hlim 1] (len 36) 0000: 6e00 0000 0024 5901 fe80 0000 0000 0000 n....$Y.þ....... 0010: 021c 0fff fea6 6348 ff02 0000 0000 0000 ...ÿþ¦cHÿ....... 0020: 0000 0000 0000 0005 0301 0024 0a39 7f02 ...........$.9.. 0030: 0000 0000 6e54 0000 0000 08ba 0100 0013 ....nT.....º.... 0040: 000a 0028 0a39 7f02 0000 0000 ...(.9...... 10:14:11.760100 00:0c:29:20:b1:ff 00:1c:0f:a6:63:48 86dd 70: fdc2:c2cd:d343:39a6:20c:29ff:fe20:b1ff > fdc2:c2cd:d343:39a6:21c:fff:fea6:6348: icmp6: echo request (len 16, hlim 64) 0000: 6000 0000 0010 3a40 fdc2 c2cd d343 39a6 `.....:@ýÂÂÍÓC9¦ 0010: 020c 29ff fe20 b1ff fdc2 c2cd d343 39a6 ..)ÿþ ±ÿýÂÂÍÓC9¦ 0020: 021c 0fff fea6 6348 8000 3450 1e9c 0001 ...ÿþ¦cH..4P.... 0030: 47a3 6173 000b 987a G£as...z 10:14:11.760834 00:1c:0f:a6:63:48 00:0c:29:20:b1:ff 86dd 70: fdc2:c2cd:d343:39a6:21c:fff:fea6:6348 > fdc2:c2cd:d343:39a6:20c:29ff:fe20:b1ff: icmp6: echo reply (len 16, hlim 64) 0000: 6000 0000 0010 3a40 fdc2 c2cd d343 39a6 `.....:@ýÂÂÍÓC9¦ 0010: 021c 0fff fea6 6348 fdc2 c2cd d343 39a6 ...ÿþ¦cHýÂÂÍÓC9¦ 0020: 020c 29ff fe20 b1ff 8100 3350 1e9c 0001 ..)ÿþ ±ÿ..3P.... 0030: 47a3 6173 000b 987a G£as...z ^C 312 packets received by filter 0 packets dropped by kernel _______________________________________________ cisco-nsp mailing list cisco-nsp@puck.nether.net https://puck.nether.net/mailman/listinfo/cisco-nsp archive at http://puck.nether.net/pipermail/cisco-nsp/
