ip multicast

[zhuqingliu <zql@xxxxxxxxxx>]

Hi, all

 

The follow is the result from an router to ping an multicast address.

====================================================================

r14#
r14#ping 224.10.1.2

 

Type escape sequence to abort.
Sending 1, 100-byte ICMP Echos to 224.10.1.2, timeout is 2 seconds:
U
r14#
r14#ping 224.10.1.2

 

Type escape sequence to abort.
Sending 1, 100-byte ICMP Echos to 224.10.1.2, timeout is 2 seconds:
U
r14#ping
Protocol [ip]:
Target IP address: 224.10.1.2
Repeat count [1]: 4
Datagram size [100]:
Timeout in seconds [2]:
Extended commands [n]:
Sweep range of sizes [n]:
Type escape sequence to abort.
Sending 4, 100-byte ICMP Echos to 224.10.1.2, timeout is 2 seconds:
U
Reply to request 1 from 10.1.5.2, 8 ms
Reply to request 1 from 10.1.5.3, 8 msU
Reply to request 3 from 10.1.5.2, 8 ms
Reply to request 3 from 10.1.5.3, 8 ms
r14#

====================================================================

 

Why r14 can't get reply if it only ping once time?

 

any input are appreciate!

Thanks in advance!

 

 

Best regards
Perry.Zhu