From: Fang Gao (fanggao@gmail.com)
Date: Sun Jun 22 2008 - 22:36:35 ART
Hi, Roman,
OSPF is between these routers. R1 has R2-R3 ip subnet in its routing-table.
PING unicast address on the interfaces between R1 and R3 works. These
routers are 3640.
Thanks
Frank
On Sun, Jun 22, 2008 at 10:35 AM, Roman Rodichev <roman@iementor.com> wrote:
> Does R1 have the R2-R3 IP subnet in its RIB?
>
>
>
> Roman Rodichev
> 5xCCIE #7927 (R&S, Security, Voice, Storage, Service Provider)
> Instructor, Content Developer. ieMentor Corporation
> http://www.iementor.com
> Y!M: roman7927
>
> -----Original Message-----
> From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
> Frank CCIE
> Sent: Sunday, June 22, 2008 7:59 AM
> To: Cisco certification
> Subject: Multicast confused
>
> Hi, Expert,
>
> I have a simple scenario to test Multicast.
>
> (f0/0) R1 (s0/0) -- (s0/0) R2 (s0/1) -- (s0/0) R3 (f0/0)
>
> - Multicast mode is sparse-dense mode on all the port.
> - RP and MA is on Loopback0 on R1
> - R1(f0/0)# ip igmp join-group 224.1.1.1
>
> Ping 224.1.1.1 in case 1-3:
> -- case 1: ping 224.1.1.1 on R2 is ok.
> ** case 2: ping 224.1.1.1 with source port s0/0 on R3. ping failed.
> (use
> extended ping)
> -- case 3: ping 224.1.1.1 with source port f0/0 on R3. ping is ok.
>
> Could you explain why the "ping" in case 2 failed?
>
> The debug message on R2 is below. 10.10.23.3 is IP address of R3 s0/0,
> 10.10.33.3 is IP address of R3 f0/0.
>
> Thanks you in advance.
>
> Frank
>
> ==================
> R2# debug ip mpacket
>
> * IP(0): s=*10.10.23.3* (Serial0/1) d=224.1.1.1 id=7, ttl=254, prot=1,
> len=104(100), *mroute olist null*
>
> * IP(0): s=*10.10.33.3* (Serial0/1) d=224.1.1.1 (Serial1/0) id=8, ttl=253,
> prot=1, len=100(100), *mforward*
>
>
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