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Latest post 11-08-2008 1:28 AM by BassemMagdy. 0 replies.
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  • 11-08-2008 1:28 AM

    Lab 4 workbook II - section 6.5 Multicast VPN

    could you please confirm one of the following command is required for 6.5 or not?

    ip mroute 34.1.4.4 255.255.255.255 34.1.24.4

    Without this command I noticed RPF check on R2 fails for 34.1.4.4

    Rack1R2#sh ip rpf 34.1.4.4
    RPF information for ? (34.1.4.4) failed, no route exists
    Rack1R2#

    Rack1R2#sh ip route 34.1.4.4
    Routing entry for 34.1.4.4/32
    Known via "isis", distance 115, metric 20, type level-1
    Redistributing via isis
    Advertised by bgp 2456
    Last update from 34.1.4.4 on Tunnel24, 00:31:00 ago
    Routing Descriptor Blocks:
    * 34.1.4.4, from 34.1.4.4, via Tunnel24
    Route metric is 20, traffic share count is 1

    Rack1R2#

    4d05h: IP(0): s=34.1.4.4 (Serial2/0) d=224.14.14.14 id=6962, ttl=254, prot=47, len=82(78), RPF lookup failed for source
    4d05h: IP(0): s=34.1.4.4 (Serial2/0) d=224.14.14.14 id=6962, ttl=254, prot=47, len=82(78), not RPF interface
    Rack1R2#

    I know that static mroutes are needed to make the RPF check succeed when you recieve the mcast traffic with a source on an interface which is not the RPF interface for this specific source, but I really I can not understand the multicast traffic flow for this section and why the source is 34.1.4.4 ???

    Thanks a lot

     

    • Post Points: 5
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