Hi.
I noticed that when I configure RSVP on Junos routers, RSVP Hello message unicast to neighbors as shown here:
R1 -------------------------------- R2
.1 10.10.10.0/30 .2
On R1:
Dec 2 10:24:56.459181 RSVP recv Hello
10.10.10.2->10.10.10.1 Len=40 lt-0/0/0.1 flags=0x1 ttl=1
Dec 2 10:24:56.459229 HelloRply Len 12 src-instance 0x78344001, dst-instance 0xde9f0a26
Dec 2 10:24:56.459238 RestartCap Len 12 restart time 0, recovery time 0
Dec 2 10:24:56.459247 Capability Len 8 00000018
Dec 2 10:24:56.459270 RPD_RSVP_NBRUP: RSVP neighbor 10.10.10.2 up on interface lt-0/0/0.1 nbr-type Direct
We can see from the message above that R2 has sent its RSVP Hello message unicast to R1.
My question is: How does R2 discover R1's IP address? (I did not see any multicast RSVP packets which could be used for neighbour discovery).
Many thanks,
Deepak