My system is configured in such a way to respond for ICMP broadcast and multicast requests from outside our network. Below command will give the details: server1:~# ndd -get /dev/ip ip_respond_to_echo_multicast -> 1 server1:~# ndd -get /dev/ip ip_respond_to_echo_broadcast -> 1 server1:~# ndd -get /dev/ip ip6_respond_to_echo_multicast -> 1
It means currently it is enabled to respond to ICMP broadcast and multicast requests. Command to get system interface broadcast address is ifconfig ?a and command to get system interface multicast address is arp ?a. server:~# ifconfig -a lo0: flags=2001000849<UP,LOOPBACK,RUNNING,MULTICAST,IPv4,VIRTUAL> mtu 8232 index 1 inet 127.0.0.1 netmask ff000000 ce3: flags=1000843<UP,BROADCAST,RUNNING,MULTICAST,IPv4> mtu 1500 index 3 inet 10.0.1.1 netmask ffffff00 broadcast 10.191.2.255 server:~# arp -a Net to Media Table: IPv4 Device IP Address Mask Flags Phys Addr ce3 server1 255.255.255.255 ce3 server2 255.255.255.255 SPLA ce5 server3 255.255.255.255 SPLA ce4 server4 255.255.255.255 SPLA ce5 224.0.0.0 240.0.0.0 SM ce4 224.0.0.0 240.0.0.0 SM ce3 224.0.0.0 240.0.0.0 SM Note: M indicates it is the multicast address used by that interface. Queries: > If I tried sending ICMP request to multicast address by following command: > ping 224.0.0.0 from my laptop, I didn?t get response from server1. (as the > above parameters are enabled, I need to get response) > If I tried sending ICMP request to broadcast address by following command: > ping 10.191.2.255 from my laptop, I didn?t get response from server1. (as the above parameters are enabled, I need to get response) Rgrds, Ram. -- This message posted from opensolaris.org
