Super User is a question and answer site for computer enthusiasts and power users. Join them; it only takes a minute:

Sign up
Here's how it works:
  1. Anybody can ask a question
  2. Anybody can answer
  3. The best answers are voted up and rise to the top

Last time I asked about masking class D ip addresses. I found that we cannot mask class D IP addresses. But, now I have another question about masking D class IP addresses:

If I want to recieve a multicast video on my PC and I try to cofigure a Multicast IP address (such as or another class D IP address), what mask should I use?

If it is impossible to mask class D IP addresses, what should I do else?

share|improve this question
By the way, your example,, is the all-hosts multicast address. All machines already get traffic at that address. If you ping that address, you'll get replies from all the machines in the same broadcast domain as your machine. – Spiff May 30 '11 at 4:02
up vote 1 down vote accepted

You don't "configure" multicast addresses the same way as unicast. The operating system usually has separate functions for joining a multicast group using IGMP: on Linux you can use ip maddr add dev eth0. Generally, the program should join multicast groups itself, without special configuration.

share|improve this answer

You must log in to answer this question.

Not the answer you're looking for? Browse other questions tagged .