From: Brian McGahan (bmcgahan@internetworkexpert.com)
Date: Tue Nov 21 2006 - 17:40:23 ART
This is version dependent. To avoid this problem always run PIM
on the interface that has the RP address assigned to it and always have
the RP specify to itself that it is the RP. The second step is not
required in Auto-RP and BSR.
HTH,
Brian McGahan, CCIE #8593 (R&S/SP)
bmcgahan@internetworkexpert.com
Internetwork Expert, Inc.
http://www.InternetworkExpert.com
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> -----Original Message-----
> From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf
Of
> Michael Zuo
> Sent: Tuesday, November 21, 2006 1:58 PM
> To: ccielab@groupstudy.com
> Subject: need help with manually specifying RP
>
> Hi Group
>
>
>
> I have
>
>
>
> R1------------R2
>
> |
>
> |
>
> 150.1.14.1
>
>
>
>
>
> And on R2:
>
>
>
> Rack1R2(config)#do sh ip pim rp
>
> Group: 239.1.1.1, RP: 150.1.14.1, uptime 00:02:28, expires never
>
> Group: 224.0.1.40, RP: 150.1.14.1, uptime 00:06:28, expires never
>
> Rack1R2(config)#do sh run | in pim
>
> ip pim sparse-mode
>
> ip pim sparse-mode
>
> ip pim rp-address 150.1.14.1
>
> Rack1R2(config)#do ping 150.1.14.1
>
>
>
> Type escape sequence to abort.
>
> Sending 5, 100-byte ICMP Echos to 150.1.14.1, timeout is 2 seconds:
>
> !!!!!
>
> Success rate is 100 percent (5/5), round-trip min/avg/max = 28/60/104
ms
>
> Rack1R2(config)#
>
>
>
> And on R1:
>
>
>
> Rack1R1(config)#do sh run int e0/1
>
> Building configuration...
>
>
>
> Current configuration : 149 bytes
>
> !
>
> interface Ethernet0/1
>
> ip address 150.1.14.1 255.255.255.0
>
> ip pim sparse-mode
>
> ip igmp join-group 239.1.1.1
>
> no ip mroute-cache
>
> half-duplex
>
> end
>
>
>
> Rack1R1(config)#do sh ip pim rp
>
> Group: 239.1.1.1, RP: 0.0.0.0
>
> Rack1R1(config)#
>
>
>
>
>
> My understanding is that if R2 tells R1 that R1 is the RP, R1 should
> automatically behave like a RP. I don't understand why my R1 is not
> considering itself as the RP?
>
>
>
>
>
> Thanks a lot....
>
>
This archive was generated by hypermail 2.1.4 : Fri Dec 01 2006 - 08:05:48 ART