Router A is a wireless bridge. All ports and wireless adapter are bridged. Bridge has DHCP-client configured.
Router B is the edge router. It has following bridges:
- Wireless. DHCP server, gw 192.168.100.60 / 27
- Wired. DHCP server, gw 192.168.100.1 / 27
- OpenVPN in TAP-mode. 192.168.110.1 / 28
- Guest. It is isolated from the networks above and doesn’t participate in PIM setup
Local receivers are connected to a random port and network segment (wired or wireless).
Remote receiver is connected to router B over Open-Vpn and has IP 192.168.110.12.
Router A PIM config
Code: Select all
/routing pim interface
add alternative-subnets=192.168.110.0/28,192.168.100.0/27 interface=Br
/routing pim rp
add address=192.168.100.1
Router B PIM config
Code: Select all
/routing pim bsr-candidates
add interface=vid10-home-1G priority=5
/routing pim interface
add dr-priority=5 interface=vid10-home-1G
add dr-priority=10 interface=vid10-home-wireless
add alternative-subnets=192.168.110.0/28 dr-priority=14 interface=OpenVpn-Br
/routing pim rp
add address=192.168.100.1 priority=3
The setup works fine in most cases. However, I have 2 questions:
- When I’m connected via VPN, OpenVpn-Br doesn’t always appear in the MFC list. I need to reconnect client sometimes to see it in MFC. Why this PIM interface is flapping?
- I can see multiple repeating entries in the log saying that routing is not complete. Something like this:
RX IGMP_V2_MEMBERSHIP_REPORT from 192.168.100.60 to 239.255.255.250 on vif vid10-home-1G: source must be directly connected
---//---- 192.168.100.58 to 239.255.255.250 on vif vid10-home-1G -----//-------
---//---- 192.168.100.58 to 239.255.255.250 on vif vid10-home-1G -----//-------
---//---- 192.168.100.1 to 239.255.255.250 on vif OpenVpn-Br -----//-------
---//---- 192.168.100.58 to 239.255.255.250 on vif OpenVpn-Br -----//-------
---//---- 192.168.10.58 to 239.255.255.250 on vif OpenVpn-Br -----//-------
According to Cisco Mcast troubleshooting guide, mcast routes are obtained from:- Static mroutes
- DVMRP routes
- MBGP routes
- Unicast routes