<div dir="ltr">Multicast is directional only to the extend that it does a reverse path check (so it doesn't stream back to the source)... other than that it will flood based on the setting of PIM (either dense or sparse, or both... IOW, either flood to everywhere and wait for endpoints to unsubscribe, or wait for requests to subscribe before flooding, respectively).<br>
<br>As far as routing back, you can do a show ip mroute and see the multicast routing table. As long as PIM is enabled on all layer-3 interfaces and your stream does not expire its TTL, it should get there.<br><br>If you have a static RP, then you can point back to it from each node so each knows how to get to the multicast source, but you prob want the RP moved to a more central location so mcast does not have to route back through your central site...<br>
<br><br><br>Jonathan<br><br><div class="gmail_quote">On Fri, Sep 5, 2008 at 10:55 AM, Scott Voll <span dir="ltr"><<a href="mailto:svoll.voip@gmail.com">svoll.voip@gmail.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">
<div dir="ltr"><div>I don't even pretend to think I really know multicast, so if this is a simple question am sorry ahead of time.</div>
<div> </div>
<div>is multicast routing directional? Can you setup multicast to only route in one direction?</div>
<div> </div>
<div>I have ip mulitcast-routing on each device and ip pim sparse-dense-mode on each interface.</div>
<div> </div>
<div>Multicast is going from main site to remote just fine, but I have a device at the remote site that needs to multicast back to the central site and I need to know how I go about routing back?</div>
<div> </div>
<div>I do have a RP at the Central site manually configured.</div>
<div> </div>
<div>Thanks</div>
<div> </div>
<div>Scott</div>
<div> </div>
<div> </div></div>
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