[c-nsp] Cisco and Juniper learning IPv6 neighbor different behavior

[Xu Hu]

Hi Experts,

Any idea about the difference between Cisco and Juniper equipment?
In the Juniper box, by default can learn the ULA, GUA and Link-local IPv6
neighbor,
In the Cisco box, by default just can learn the GUA and Link-local IPv6
neighbor,
Below is the output captured.

xuhu1> show ipv6 neighbors
IPv6 Address                 Linklayer Address  State       Exp Rtr Secure
Interface
fd00:0:1:1824:2420:1218:afe:7d89
                             f8:66:f2:d2:ed:00  stale       330 yes no
 ge-0/0/0.1824
fd00:0:1:1825:2520:1218:afe:7d8d
                             f8:66:f2:d2:f9:c0  stale       334 yes no
 ge-0/0/1.1825
fe80::fa66:f2ff:fed2:ed00    f8:66:f2:d2:ed:00  stale       540 yes no
 ge-0/0/0.1824
fe80::fa66:f2ff:fed2:f9c0    f8:66:f2:d2:f9:c0  stale       1009 yes no
ge-0/0/1.1825



xuhu2#sh ipv6 neighbors vrf SASN_OUT
IPv6 Address                              Age Link-layer Addr State
Interface
FE80::32E4:DBFF:FE33:A780                   7 30e4.db33.a780  STALE
Te2/3.1626
FE80::8271:1F07:20BF:F300                   3 8071.1fbf.f300  STALE
Gi1/1.1824

xuhu3#sh ipv6 neighbors
IPv6 Address                              Age Link-layer Addr State
Interface
2402:CE00:88:1::2                           0 001d.708d.8181  REACH Gi5/2
2402:CE00:88:5::2                           0 0021.d8ca.8140  REACH Te3/4
FE80::FA66:F2FF:FED2:ED00                   3 f866.f2d2.ed00  STALE
Te2/0/1.1626
FE80::221:D8FF:FECA:8140                    2 0021.d8ca.8140  STALE Te3/4


Will appreciate for any inputs.

Best Regards,
Hu Xu