Thanks for your response Jay. Ref Volume 3 Lab 5-T, Ticket 4
235.23 is the directly connected interface from R5 to BB3, it is the RPF neighbor. I was thinking that the source of the packet would be 192.0.0.23 and that is what would need to pass RPF. Indeed looking at BB3, it does have ip pim bsr-candidate Loopback0 0. Just to be sure, 235.23 also passes RPF check as well. R5#sh ip rpf 192.0.235.23 RPF information for ? (192.0.235.23) RPF interface: FastEthernet0/1.235 RPF neighbor: ? (192.0.235.23) - directly connected RPF route/mask: 192.0.235.0/24 RPF type: unicast (connected) RPF recursion count: 0 Doing distance-preferred lookups across tables R5# Patrick A. Baldwin (Alex) Network Engineering Colsa Corp., HOSC Contract NASA , Marshall Space Flight Center Office: (256) 544-2089 Fax: (256) 544-8629 E-mail: [email protected] -----Original Message----- From: Jay [mailto:[email protected]] Sent: Tuesday, January 18, 2011 12:42 PM To: Baldwin, Patrick A. Cc: [email protected] Subject: Re: [OSL | CCIE_RS] IP PIM BSR Where does 192.0.235.23 come into play? Does it pass the RPF check? Also, is both a mapping agent candidate and RP candidate configured? Sent from my iPad On Jan 18, 2011, at 12:32 PM, "Baldwin, Patrick A." <[email protected]> wrote: > Does anyone know if there is a bug in 12.4(24)T4 that would cause a router to > ignor BSR messages when RPF clearly is satisfied? > > > R5#sh ip rpf 192.0.0.23 > RPF information for ? (192.0.0.23) > RPF interface: FastEthernet0/1.235 > RPF neighbor: ? (192.0.235.23) > RPF route/mask: 192.0.0.23/32 > RPF type: mbgp > RPF recursion count: 0 > Doing distance-preferred lookups across tables > R5# > *Jan 18 17:33:19.255: PIM-BSR(0): bootstrap (192.0.0.23) on non-RPF path > FastEthernet0/1.235 or from non-RPF neighbor 192.0.235.23 discarded > R5# > *Jan 18 17:33:53.791: PIM-BSR(0): Build v2 Candidate-RP advertisement for > 192.0.0.52 priority 0, holdtime 150 > *Jan 18 17:33:53.791: PIM-BSR(0): Candidate RP's group prefix 224.0.0.0/4 > *Jan 18 17:33:53.791: PIM-BSR(0): no bootstrap router address > > > Cisco IOS Software, 2800 Software (C2800NM-ADVENTERPRISEK9-M), Version > 12.4(24)T4, RELEASE SOFTWARE (fc2) > Technical Support: http://www.cisco.com/techsupport > Copyright (c) 1986-2010 by Cisco Systems, Inc. > Compiled Fri 03-Sep-10 05:38 by prod_rel_team > > If I am missing something......please please tell me. I'm almost out of hair > to pull. > > Patrick A. Baldwin (Alex) > Network Engineering > Colsa Corp., HOSC Contract > NASA , Marshall Space Flight Center > *Office: (256) 544-2089 > ÊFax: (256) 544-8629 > *E-mail: [email protected]<mailto:[email protected]> > > _______________________________________________ > For more information regarding industry leading CCIE Lab training, please > visit www.ipexpert.com _______________________________________________ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com
