Section 9: Multicast (2 Points)

• Ensure that R6 responds to pings from R4 to multicast address of 224.0.0.9; do not use PIM, any static mappings.

This is a simple multicast question as you should have already configured multicast in the voice section. You should recognize 224.0.0.9 as the multicast address used by RIP V2. You will find without the use of PIM that by enabling RIP V2 on R6 it will respond when pinging 224.0.0.9.You only need RIP on R6 as, by default, R4 will forward multicast pings becasue of the broadcast capability of the Frame Relay network. If you have configured this correctly as shown in Example 2-81, you have scored 3 points. Example 2-82 shows R6 responding to a ping for 224.0.0.9.

Example 2-81. R6 RIP V2 Multicast Configuration

 router rip  version 2  passive-interface default  network 10.0.0.0 

Example 2-82. R4 RIP V2 Ping Testing

 R4#ping 224.0.0.9 Type escape sequence to abort. Sending 1, 100-byte ICMP Echos to 224.0.0.9, timeout is 2 seconds: Reply to request 0 from 10.100.101.2, 8 ms