2012 Feb 23 23：00：08.676710 pim： [16132] （default-base） Received unauthenticated hello- message from 10.1.1.2 on Ethernet1/18， message discarded 2012 Feb 23 23：00：12.528763 pim： [16132] （default-base） Send Hello with AH on Ethernet1/18 from 10.1.1.1， holdtimE. 105 secs，dr-priority：1  You are troubleshooting a PIM neighbor adjacency that is not coming up. You issued the command show ip pim neighbor e1/18 and confirmed there is no PIM neighbor on the interface. What is the problem based on the debug output？（）

• A、 The peer router 10.1.1.2 has PIM disabled on its interface connecting to Ethernet1/18.
• B、 The peer router 10.1.1.2 has the wrong PIM password configured on its interface connecting to Ethernet1/18.
• C、 The local router 10.1.1.1 has the wrong PIM password configured on Ethernet1/18.
• D、 The peer router 10.1.1.2 does not have PIM hello authentication enabled on its interface connecting to Ethernet1/18.
• E、 The local router 10.1.1.1 does not have PIM hello authentication enabled for Ethernet1/18.