Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S263713AbUDSPho (ORCPT ); Mon, 19 Apr 2004 11:37:44 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S264466AbUDSPho (ORCPT ); Mon, 19 Apr 2004 11:37:44 -0400 Received: from node249-201.sim.db.erau.edu ([155.31.249.201]:27776 "EHLO localhost.localdomain") by vger.kernel.org with ESMTP id S263713AbUDSPhl (ORCPT ); Mon, 19 Apr 2004 11:37:41 -0400 Subject: How to make Linux route multicast traffic bi-directionly between multible subnets From: John Pesce Reply-To: pescej@sprl.db.erau.edu To: linux-kernel@vger.kernel.org Cc: pescej@sprl.db.erau.edu Content-Type: text/plain Content-Transfer-Encoding: 7bit Organization: Message-Id: <1082389059.1982.15.camel@inferno> Mime-Version: 1.0 X-Mailer: Ximian Evolution 1.2.2 (1.2.2-4) Date: 19 Apr 2004 11:37:39 -0400 Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1224 Lines: 34 I'm using kernel 2.4.20-8. I have a Linux box multi-homed on three subnets using three NICs in order to route TCP and UDP traffic between them. I would like to also like route specific multicast group traffic between them. I've read the multicast-howto and crawled the popular search engines but I can not find any documentation to do it. I have three NICs on subnets A,B and C. Any multicast traffic arriving from any one of them needs to be forwarded to the other two so the clients can received it. The only thing I have been able to do is set a default multicast route to subnet A. This forwards traffic incoming from B and C to A, but what about the other ways? Some pages refer to something called mrouted but it is all dated like 1996. Did multicast routing die off into the realm of hardware routers ?? I see on bootup a kernel message about 0.96 PIM-SM. Can I somehow use that? Please help. I'm not on the mailing list so please CC me personally. Thank you, John - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/