12-13-2019 02:52 AM
Hi
Which type of address does OSPFv3 use to form neighbor adjacencies and to send LSAs?
A. unicast IPv6 addresses
B. link-local addresses
C. multicast address FF02::5
D. unicast IPv4 addresses
I believe both link-local address and multicast address FF02::5 are used for the neighbor formation.
Can anyone give the one answer, question-wording are seems to be tricky for me.
12-13-2019 03:23 AM - edited 12-18-2019 04:52 AM
@sivam siva Hello,
I hope that it can help you
For me, answer is: C
12-13-2019 04:22 AM
Hello,
for the sake of verification, I configured two OSPF neighbors and ran a debug:
GigabitEthernet0/0 is up, line protocol is up
Link Local Address FE80::E39:1BFF:FED8:6000, Interface ID 2
*Dec 13 12:14:51.990: OSPFv3-1-IPv6 PAK : Gi0/0: OUT: FE80::E39:1BFF:FED8:6000->FF02::5: ver:3 type:4 len:64 rid:1.1.1.1 area:0.0.0.1 chksum:6492 inst:0
12-13-2019 04:24 AM
Hi @sivam siva
The answer is:
C. multicast address FF02::5
OSPF for IPv4 uses the multicast 204.0.0.5
OSPF for IPv6 uses the multicast FF02::5
Check this:
https://www.ciscolive.com/c/dam/r/ciscolive/us/docs/2017/pdf/BRKRST-2022.pdf
Regards
12-13-2019 04:46 AM
Link local address
12-13-2019 05:24 AM
Are multiple answers possible, or is just one answer allowed ?
12-18-2019 04:40 AM
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