From: ian (iyux2000@gmail.com)
Date: Fri Apr 13 2007 - 04:30:37 ART
huangyinxiao,How are you#!
Hi, huangyinxiao
Can you pass on your configurations or give more detailed information?
======= 2007-04-13 00:33:43 What you've mentioned in your letter#:=======
>Hi all,
>
>I have two multicase problems when I am doing labs.
>
>Topology:
>R4-(FR multipoint)-R1----R5-(FR point-to-point)-R2
>
>R4 is RP and R1 is mapping agent. Sparse-dense-mode and auto-rp are used, and R4 loopback 0 join-group 239.8.8.30. Ip pim dm-fallback is enabled.
>----------------------------------------------------------------------------------------------------------------------------
>Two problem for me in this senario:
>
>1. It is very odd that R5 fail to ping 239.8.8.30 in first time and later it is success. After a little while, R5 ping again and it also fail to ping at the beginning, and then it is success.
>
>2. R2 cannot ping 239.8.8.30, but after R2 loopback0(150.4.8.1) enable sparse-dense-mode, R2 can ping 239.8.8.30.
>----------------------------------------------------------------------------------------------------------------------------
>And I found some different in "sh ip mroute" on R2. The incoming and outgoing interface seems right when enable sparse-dense-mode on loopback.
>
>Without enable sparse-dense-mode on R2 loopback:
>
>(*, 224.0.1.39), 00:00:08/stopped, RP 0.0.0.0, flags: D
> Incoming interface: Null, RPF nbr 0.0.0.0
> Outgoing interface list:
> Serial0, Forward/Sparse-Dense, 00:00:08/00:00:00
> FastEthernet0, Forward/Sparse-Dense, 00:00:08/00:00:00
>
>(8.8.4.4, 224.0.1.39), 00:00:08/00:02:51, flags: T
> Incoming interface: Serial0, RPF nbr 8.8.13.1
> Outgoing interface list:
> FastEthernet0, Forward/Sparse-Dense, 00:00:09/00:00:00
>
>(*, 224.0.1.40), 00:00:33/stopped, RP 0.0.0.0, flags: DCL
> Incoming interface: Null, RPF nbr 0.0.0.0
> Outgoing interface list:
> Serial0, Forward/Sparse-Dense, 00:00:33/00:00:00
> FastEthernet0, Forward/Sparse-Dense, 00:00:33/00:00:00
>----------------------------------------------------------------------------------------------------------------------------
>With enable sparse-dense-mode on R2 loopback:
>(*, 239.8.8.30), 00:07:14/stopped, RP 8.8.4.4, flags: SPF
> Incoming interface: Serial0, RPF nbr 8.8.13.1
> Outgoing interface list: Null
>
>(150.4.8.1, 239.8.8.30), 00:00:12/00:03:22, flags: FT
> Incoming interface: Loopback1, RPF nbr 0.0.0.0, Registering
> Outgoing interface list:
> Serial0, Forward/Sparse-Dense, 00:00:12/00:03:17
>
>(*, 224.0.1.39), 03:49:53/stopped, RP 0.0.0.0, flags: D
> Incoming interface: Null, RPF nbr 0.0.0.0
> Outgoing interface list:
> Serial0, Forward/Sparse-Dense, 03:49:53/00:00:00
> FastEthernet0, Forward/Sparse-Dense, 03:49:53/00:00:00
>
>(8.8.4.4, 224.0.1.39), 03:49:53/00:02:41, flags: T
> Incoming interface: Serial0, RPF nbr 8.8.13.1
> Outgoing interface list:
> FastEthernet0, Forward/Sparse-Dense, 03:49:53/00:00:00
>
>(*, 224.0.1.40), 03:50:31/stopped, RP 0.0.0.0, flags: DCL
> Incoming interface: Null, RPF nbr 0.0.0.0
> Outgoing interface list:
> Serial0, Forward/Sparse-Dense, 03:50:31/00:00:00
> FastEthernet0, Forward/Sparse-Dense, 03:50:31/00:00:00
>
>(8.8.1.1, 224.0.1.40), 03:18:06/00:02:30, flags: LT
> Incoming interface: Serial0, RPF nbr 8.8.13.1
> Outgoing interface list:
> FastEthernet0, Forward/Sparse-Dense, 03:18:06/00:00:00
>----------------------------------------------------------------------------------------------------------------------------
>Can someone tell me what's reason will lead to two problems happening? How can R2 ping 239.8.8.30 without enabling pim sparse-dense-mode on loopback 0?
>
>
>Thank you for any reply!
>Laurence
>
>_______________________________________________________________________
>Subscription information may be found at:
>http://www.groupstudy.com/list/CCIELab.html
= = = = = = = = = = = = = = = = = = = =
!!!!!!!!!!!!!!!!Have a nice day.
!!!!!!!!!!!!!!!!ian
!!!!!!!!!!!!!!!!iyux2000@gmail.com
!!!!!!!!!!!!!!!!!!!!2007-04-13
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