Re: IPV6 Multicast

Check out "sh ipv6 pim neighbor" it should show you this information. Also,
yeah if the receiver, R3 in this case did not know who the RP was and was
also the PIM DR , I could see why this would be an issue. Like I said, make
sure everybody always knows the RP and you are much better off.

On Mon, Mar 15, 2010 at 6:20 PM, Muzammil Malick <malickmuz_at_gmail.com>wrote:

> In this case I did not try to influence the DR but R1 is the RP. It was R3
> the receiver that did not have the RP configured. How exactly do you know
> who the PIM DR is because
> if I do show ipv6 pim interface on all routers they all seem to have one
> interface that shows:
>
> DR : this system
>
> I am assuming this means that this router is the DR?
>
>
>
>
>
>
> On 15 March 2010 22:07, Joe Astorino <jastorino_at_ipexpert.com> wrote:
>
>> Ah yes, and if thinking about it from R1's point of view...when R0 starts
>> pinging it becomes a multicast source...now, the DR on the segment will have
>> to register that source with the RP. If R1 is the DR on the segment and
>> does not know who the RP is that is a problem.
>>
>>
>>
>> On Mon, Mar 15, 2010 at 6:04 PM, Joe Astorino <jastorino_at_ipexpert.com>wrote:
>>
>>> If the receiver is the router itself perhaps what is happening is that
>>> your MLD receiver router is itself trying to send the PIM join to the RP.
>>> Is the receiver router also the PIM DR on the segment by chance? You could
>>> play with that and see if you get differences.
>>>
>>> In general I always say make sure EVERYBODY knows who the RP is. It is
>>> safer that way : )
>>>
>>>
>>> On Mon, Mar 15, 2010 at 6:00 PM, Muzammil Malick <malickmuz_at_gmail.com>wrote:
>>>
>>>> Configuring all routers with static RP, which in my case is R1, solved
>>>> the problem.But this breaks my understanding of source and receivers.
>>>>
>>>> Does this mean that in ipv6 the receiver somehow tries to contact the RP
>>>> directly?
>>>> I'm confused!
>>>>
>>>>
>>>> On 15 March 2010 21:54, Joe Astorino <jastorino_at_ipexpert.com> wrote:
>>>>
>>>>> I would put the static RP command everywhere even if it is not
>>>>> technically required. Let's try to narrow down the problem. Which router
>>>>> is the RP? Is the topology as simple as what you wrote out or is there a
>>>>> possibility of an RPF failure or something of that nature?
>>>>>
>>>>> On Mon, Mar 15, 2010 at 5:51 PM, Muzammil Malick <malickmuz_at_gmail.com>wrote:
>>>>>
>>>>>> It is static, now when you say all the routers, do I need the RP
>>>>>> configured on all routers, or just R1 an R2?
>>>>>>
>>>>>> This is how I would have done things in ipv4, with the source (R0) and
>>>>>> the receiver (R3) not needing to have RP info
>>>>>>
>>>>>>
>>>>>> On 15 March 2010 21:41, Joe Astorino <jastorino_at_ipexpert.com> wrote:
>>>>>>
>>>>>>> How do you have the RP learned on all your routers? Static or BSR?
>>>>>>> Is that functioning properly? Do all routers know who the RP is (Assuming
>>>>>>> you are using sparse-mode and not SSM) ?
>>>>>>>
>>>>>>> On Mon, Mar 15, 2010 at 5:36 PM, Muzammil Malick <
>>>>>>> malickmuz_at_gmail.com> wrote:
>>>>>>>
>>>>>>>> Hi can somebody please help me out.
>>>>>>>>
>>>>>>>> I have searched the archives and nobody seems to have talked about
>>>>>>>> this.
>>>>>>>>
>>>>>>>> The DOC CD is very vague on this but I am trying to configure
>>>>>>>> multicast in
>>>>>>>> the following scenario
>>>>>>>>
>>>>>>>> R0 ------- R1 ------ R2 ------- R3
>>>>>>>>
>>>>>>>> I have enabled IGP reachability between the routers with EIGRPv6 and
>>>>>>>> have
>>>>>>>> enabled ipv6 multicast-routing on all routers.
>>>>>>>>
>>>>>>>> R3 is joining group using
>>>>>>>>
>>>>>>>> ipv6 mld join-group FF04::10
>>>>>>>>
>>>>>>>> I am using R0 as a source but when I ping the group FF04::10, R1 and
>>>>>>>> R2 are
>>>>>>>> pruning the traffic. R1's outgoing interface list is null.
>>>>>>>>
>>>>>>>> Now from my ipv4 days this suggests that there is no source that
>>>>>>>> is interested in receiving traffic for the group. However I have
>>>>>>>> joined the
>>>>>>>> group at R3
>>>>>>>>
>>>>>>>> Can someone point me at what I am missing or doing wrong?
>>>>>>>>
>>>>>>>> R1
>>>>>>>>
>>>>>>>>
>>>>>>>> (155:1:1::1, FF04::10), 00:00:05/00:03:23, flags: SPFT
>>>>>>>> Incoming interface: FastEthernet1/0
>>>>>>>> RPF nbr: FE80::C800:8FF:FEE8:1C
>>>>>>>> Outgoing interface list: Null
>>>>>>>>
>>>>>>>>
>>>>>>>> R2
>>>>>>>>
>>>>>>>> (*, FF04::10), 00:32:51/never, RP 155:1:2::1, flags: SPC
>>>>>>>> Incoming interface: FastEthernet1/1
>>>>>>>> RPF nbr: FE80::C801:8FF:FEE8:1D
>>>>>>>> Immediate Outgoing interface list:
>>>>>>>> FastEthernet1/0, Null, 00:32:51/never
>>>>>>>>
>>>>>>>> Thanks
>>>>>>>>
>>>>>>>>
>>>>>>>> Blogs and organic groups at http://www.ccie.net
>>>>>>>>
>>>>>>>>
>>>>>>>> _______________________________________________________________________
>>>>>>>> Subscription information may be found at:
>>>>>>>> http://www.groupstudy.com/list/CCIELab.html
>>>>>>>>
>>>>>>>>
>>>>>>>>
>>>>>>>>
>>>>>>>>
>>>>>>>>
>>>>>>>>
>>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>> --
>>>>>>> Regards,
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>> Joe Astorino - CCIE #24347
>>>>>>> Sr. Technical Instructor - IPexpert
>>>>>>> Mailto: jastorino_at_ipexpert.com
>>>>>>> Telephone: +1.810.326.1444
>>>>>>> Live Assistance, Please visit: www.ipexpert.com/chat
>>>>>>> eFax: +1.810.454.0130
>>>>>>>
>>>>>>> IPexpert is a premier provider of Self-Study Workbooks, Video on
>>>>>>> Demand, Audio Tools, Online Hardware Rental and Classroom Training for the
>>>>>>> Cisco CCIE (R&S, Voice, Security & Service Provider) certification(s) with
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>>>>>>> Australia. Be sure to visit our online communities at
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>>>>>>> www.ipexpert.com
>>>>>>>
>>>>>>
>>>>>>
>>>>>
>>>>>
>>>>> --
>>>>> Regards,
>>>>>
>>>>>
>>>>>
>>>>> Joe Astorino - CCIE #24347
>>>>> Sr. Technical Instructor - IPexpert
>>>>> Mailto: jastorino_at_ipexpert.com
>>>>> Telephone: +1.810.326.1444
>>>>> Live Assistance, Please visit: www.ipexpert.com/chat
>>>>> eFax: +1.810.454.0130
>>>>>
>>>>> IPexpert is a premier provider of Self-Study Workbooks, Video on
>>>>> Demand, Audio Tools, Online Hardware Rental and Classroom Training for the
>>>>> Cisco CCIE (R&S, Voice, Security & Service Provider) certification(s) with
>>>>> training locations throughout the United States, Europe, South Asia and
>>>>> Australia. Be sure to visit our online communities at
>>>>> www.ipexpert.com/communities and our public website at
>>>>> www.ipexpert.com
>>>>>
>>>>
>>>>
>>>
>>>
>>> --
>>> Regards,
>>>
>>>
>>>
>>> Joe Astorino - CCIE #24347
>>> Sr. Technical Instructor - IPexpert
>>> Mailto: jastorino_at_ipexpert.com
>>> Telephone: +1.810.326.1444
>>> Live Assistance, Please visit: www.ipexpert.com/chat
>>> eFax: +1.810.454.0130
>>>
>>> IPexpert is a premier provider of Self-Study Workbooks, Video on Demand,
>>> Audio Tools, Online Hardware Rental and Classroom Training for the Cisco
>>> CCIE (R&S, Voice, Security & Service Provider) certification(s) with
>>> training locations throughout the United States, Europe, South Asia and
>>> Australia. Be sure to visit our online communities at
>>> www.ipexpert.com/communities and our public website at www.ipexpert.com
>>>
>>
>>
>>
>> --
>> Regards,
>>
>>
>>
>> Joe Astorino - CCIE #24347
>> Sr. Technical Instructor - IPexpert
>> Mailto: jastorino_at_ipexpert.com
>> Telephone: +1.810.326.1444
>> Live Assistance, Please visit: www.ipexpert.com/chat
>> eFax: +1.810.454.0130
>>
>> IPexpert is a premier provider of Self-Study Workbooks, Video on Demand,
>> Audio Tools, Online Hardware Rental and Classroom Training for the Cisco
>> CCIE (R&S, Voice, Security & Service Provider) certification(s) with
>> training locations throughout the United States, Europe, South Asia and
>> Australia. Be sure to visit our online communities at
>> www.ipexpert.com/communities and our public website at www.ipexpert.com
>>
>
>

-- 
Regards,
Joe Astorino - CCIE #24347
Sr. Technical Instructor - IPexpert
Mailto: jastorino_at_ipexpert.com
Telephone: +1.810.326.1444
Live Assistance, Please visit: www.ipexpert.com/chat
eFax: +1.810.454.0130
IPexpert is a premier provider of Self-Study Workbooks, Video on Demand,
Audio Tools, Online Hardware Rental and Classroom Training for the Cisco
CCIE (R&S, Voice, Security & Service Provider) certification(s) with
training locations throughout the United States, Europe, South Asia and
Australia. Be sure to visit our online communities at
www.ipexpert.com/communities and our public website at www.ipexpert.com
Blogs and organic groups at http://www.ccie.net