Task 6.4,6.5 Intra-AS Multicast mGRE tun 0

Hi

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:

Rack1R1#
*Mar 25 07:59:06.335: %BGP-5-ADJCHANGE: neighbor 150.1.3.3 Up
Rack1R1#
*Mar 25 08:00:22.083: %MDT-4-LBSRC: VRF 100: MDT ATM3/0.1 uses source address 150.1.101.1 from a non-loopback interface
Rack1R1#
*Mar 25 08:00:23.107: %LINEPROTO-5-UPDOWN: Line protocol on Interface Tunnel0, changed state to up
Rack1R1#
*Mar 25 08:00:24.135: %PIM-5-DRCHG: VRF 100: DR change from neighbor 0.0.0.0 to 150.1.101.1 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
* 239.100.100.100 Tunnel0     Ethernet0/0              100
Rack1R6#

 

is there a way to influence mGRE tunnel to source off loopback 0?

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