The ping utility uses ICMP Echo messages to verify connectivity to any device with an IP address. However, in the case of multicast applications, a single ping sent to a multicast address can degrade the performance of routers because the stream of packets is replicated multiple times.
You can disable the router's response to ping (ICMP Echo) packets sent to multicast addresses. The system responds normally to unicast ping packets.
To configure, include the no-multicast-echo statement at the [edit system] hierarchy level:
- system {
- no-multicast-echo;
- }
For more information about this statement, see the JUNOS System Basics Configuration Guide.