The idea behind the PIM neighbor filter is to serve both as an alert (hey the downstream guy is forwarding things) as well as an expectation level (don't expect the downstream to help much).
So setting it up on R8 as well I don't think would accomplish anything. I'm not sure it would mess anything up, but you wouldn't gain anything by it either. The "ip igmp helper-address" command forwards things on to R7. HTH, Scott Morris, CCIE4 (R&S/ISP-Dial/Security/Service Provider) #4713, JNCIE-M #153, JNCIS-ER, CISSP, et al. CCSI/JNCI-M/JNCI-ER VP - Technical Training - IPexpert, Inc. IPexpert Sr. Technical Instructor A Cisco Learning Partner - We Accept Learning Credits! [EMAIL PROTECTED] Telephone: +1.810.326.1444 Fax: +1.810.454.0130 http://www.ipexpert.com -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Roger Sent: Thursday, April 17, 2008 10:25 AM To: [email protected] Subject: [OSL | CCIE_RS] Task 15.4 Multicast Stub Router Hi Group, In task 15.4 we are asked to make R8 a stub multicast router. For that reason PG tells to setup a pim neighbor-filter on R7. Well this will clear the PIM neighbor to R8 but should we not also configure a pim neighbor-filter on R8? If I look at R8, the pim neighborship to R7 is still up so to me it is not really stub or do I understand something wrong? Regards Roger
