ping 224.0.0.1 question

[koeicjm]

I have some redhat7.3 servers in my lan.
Host A, B......
When I run "ping 224.0.0.1" from Host B, Host A donot give an answer, but When I run "ping 224.0.0.1" at host A, Host A and B give an answer too.
it seems A is not in the all-hosts group.
any idea?

 

[Morsing]

Multicast isn't enabled (kernel option)?? Missing entry in the routing table??

What do you use multicast for?? Does it otherwise work??

Cheers

Henrik Morsing
Certified AIX 4.3 Systems Administration
& p690 Technical Support

 

[koeicjm]

My server application use Multicast to make broadcast, so My client application that run at win2k can know which server is running anytime. the server application run at Host A is not list in the running server list , the client application can find server application run at other hosts,just like run at host B,
so I try to ping 224.0.0.1 and find no answer from host A.
I think there are question about my Multicast config.

The linux server is not installed by me , I try to read the config file in /boot . and find a line :"CONFIG_IP_MULTICAST=y", so I think multicast maybe enabled.how can I really confirm it ? and how can I confirm "Missing entry in the routing table" ?
thank you for reply.