Task 6.4,6.5 Intra-AS Multicast mGRE tun 0
Router R1 sources the mGRE tunnel off interface ATM while R3 uses loopback 0 interface for mGRE tunnel.
On R1 the tunnel comes up with the following log messages:
*Mar 25 07:59:06.335: %BGP-5-ADJCHANGE: neighbor 188.8.131.52 Up
*Mar 25 08:00:22.083: %MDT-4-LBSRC: VRF 100: MDT ATM3/0.1 uses source address 184.108.40.206 from a non-loopback interface
*Mar 25 08:00:23.107: %LINEPROTO-5-UPDOWN: Line protocol on Interface Tunnel0, changed state to up
*Mar 25 08:00:24.135: %PIM-5-DRCHG: VRF 100: DR change from neighbor 0.0.0.0 to 220.127.116.11 on interface Tunnel0
I have noticed the same issue with Router R6:
Rack1R6#sh ip pim mdt
* implies group is the MDT default group
MDT Group Interface Source VRF
* 18.104.22.168 Tunnel0 Ethernet0/0 100
is there a way to influence mGRE tunnel to source off loopback 0?