PIMD with only one router not working?

[lucdig]

Hi, I've compiled pimd on a Linux and for now I would like to test it as a single multicast router for testing purposes.
Actually for a VXLAN scenario to connect 2 different data centers.

The pimd.conf is:

phyint tun0 enable altnet PublicIP1/32
phyint tun1 enable altnet PublicIP2/32
no phyint

rp-address 10.14.11.1 224.0.0.0/4

spt-threshold packets 0 interval 100

• 10.14.11.1 is the ip address of the interface tun0, so pimd is configured with itself as RP
• The VXLAN is configured with the 239.13.13.3 multicast address
• PublicIP1 and PublicIP2 are the Source ip addresses of the VXLAN VTEPs that send messages to 239.13.13.3

When I start pimd -n -l debug, I see:

# pimd -n -l debug
pimd: 09:26:18.925 pimd version 3.0-beta1 starting.
...
...
pimd: 09:26:18.926 VIF #1: Installing tun0 (10.14.11.1 -> 10.14.11.1) rate 0
pimd: 09:26:18.926 VIF #2: Installing tun1 (10.14.12.1 -> 10.14.12.1) rate 0
pimd: 09:26:18.926 ALTNET: PublicIP1/32
pimd: 09:26:18.927 ALTNET: PublicIP2/32
pimd: 09:26:18.927 Local static RP: 10.14.11.1, group 224.0.0.0/4
pimd: 09:26:18.927 spt-threshold packets 0 interval 100
pimd: 09:26:18.927 Local static RP: 169.254.0.1, group 232.0.0.0/8
pimd: 09:26:18.927 VIF #0: Installing pimreg, using tun0 with ifaddr 10.14.11.1
pimd: 09:26:18.927 VIF #1: now in service, interface tun0 UP
pimd: 09:26:18.927 VIF #2: now in service, interface tun1 UP
pimd: 09:26:18.931 VIF #0: now in service, interface pimreg UP
pimd: 09:26:18.931 Binding IPC socket to /var/run/pimd.sock
pimd: 09:26:20.112 Upstream router not available.

When I try to communicate (with a simple ping) through VXLAN, the communication is not established, maybe due to the "Upstream router not available".
It means that the multicast message with (S,G) = (PublicIP1, 239.13.13.3), coming from tun0, is not routed to tun1.
pimctl shows:

Multicast Routing Table
Source            Group            RP Address       Flags
ANY               239.13.13.3      10.14.11.1       WC RP

Number of Groups        : 1
Number of Cache MIRRORs : 0

and:

PIM Candidate Rendez-Vous Point Table
Group Address     RP Address       Prio  Holdtime  Expires
232.0.0.0/8       169.254.0.1         1   Forever  Never
224.0.0.0/4       10.14.11.1          1   Forever  Never

mrouted works with a similar configuration file /etc/mrouted.conf:

no phyint
phyint gif0 enable altnet PublicIP1/32
phyint gif1 enable altnet PublicIP2/32

I would have some questions here:

1. why does pimd configure 169.254.0.1 as RP candidate for 232.0.0.0/8 ? I haven't specified it in the conf file.
2. Can pimd act as a "standalone" multicast router, with no neighbors, itself as RP, only with interfaces that send igmp joins/leaves and multicast traffic?
3. regarding VXLAN: RFCs say that bidir-pim would be better than sparse mode, can pimd act as bidir-pim router?

I tested with both the current release and the latest release v2.3.2, the results are exactly the same.

Regards, thanks in advance