From: Hobbs (deadheadblues@gmail.com)
Date: Mon Jan 19 2009 - 14:25:53 ARST
You can use MSDP between the RP's to share mroute tables. Basically what you
have is two domains, not really a primary/backup. Although if the RP's have
the same loopback, then this is called "anycast RP." This is covered pretty
well in the DocCD.
On Mon, Jan 19, 2009 at 6:56 AM, CCIE To Be <ccie.tobe81@gmail.com> wrote:
>
> Hi,
>
> I have observed one more thing that if I use 2 RPs in primary/backup setup
> and all routers are using sparse-mode. Now if a router which is directly
> connected with backup RP but not with primary RP is still able to ping
> multicast groups successfully. It means in this scenario we don't need to
> worry about 'autorp listner' or 'sparse-dense-mode' ??
>
> Kindly clear this confusion.
>
> HTH
>
> On Mon, Jan 12, 2009 at 1:27 AM, CCIE To Be <ccie.tobe81@gmail.com> wrote:
>
>>
>> Hi Hobbs/Anthony,
>>
>> On hub I am using physical interface and ip pim nbma-mode is already
>> configured. Because R2 and R3 are directly connected with RP ( R1 ) so we
>> don't need to configure autorp listner or sparse-dense-mode untill unless I
>> add another router either with R2 or R3. Thanks Hobbs for clarification.
>>
>>
>>
>> On Mon, Jan 12, 2009 at 1:15 AM, Anthony Sequeira <
>> asequeira@internetworkexpert.com> wrote:
>>
>>> Something else to consider here - I presume you are using subinterfaces
>>> on the hub router, otherwise you must be using ip pim nmba-mode there.
>>>
>>> Anthony J. Sequeira, CCIE #15626, CCSI #23251
>>> Senior CCIE Instructor
>>>
>>> asequeira@internetworkexpert.com
>>>
>>> Internetwork Expert, Inc.
>>> http://www.InternetworkExpert.com <http://www.internetworkexpert.com/>
>>> Toll Free: 877-224-8987
>>> Outside US: 775-826-4344
>>>
>>>
>>> On Jan 11, 2009, at 3:52 PM, Hobbs wrote:
>>>
>>> Hi, Because the devices are directly connected. If you had another router
>>>> attached to R2 or R3, they probably wouldn't receive the RP information
>>>> and
>>>> if they joined a group would not know where to send it the join. Try
>>>> adding
>>>> R4 to R2 or R3 and see what happens.
>>>>
>>>> On Sun, Jan 11, 2009 at 1:41 PM, CCIE To Be <ccie.tobe81@gmail.com>
>>>> wrote:
>>>>
>>>> Dear Group,
>>>>>
>>>>> Following is the topology,
>>>>>
>>>>> R1,R2 & R3 are connected over frame relay network whereas R1 is the
>>>>> hub.
>>>>> Multicasting is also running over this FR network in which R1 is acting
>>>>> as
>>>>> RP & Mapping Agent. All interfaces in multicast domain are in 'sparse
>>>>> mode'
>>>>> and following groups have been assigned to R3's ethernet for multicast
>>>>> testing 224.1.1.1 & 224.2.2.2. My question is that I am not using
>>>>> 'sparse-dense-mode' nor 'autorp listener' but multicast is working fine
>>>>> without using any of these options. How autorp messages are propagating
>>>>> across the multicast domain in this scenario ??
>>>>>
>>>>> Following are few outputs,
>>>>>
>>>>> R2#ping 224.1.1.1
>>>>> Type escape sequence to abort.
>>>>> Sending 1, 100-byte ICMP Echos to 224.1.1.1, timeout is 2 seconds:
>>>>> Reply to request 0 from 192.168.1.3, 276 ms
>>>>> Reply to request 0 from 192.168.1.3, 280 ms
>>>>>
>>>>> R2#show ip pim rp
>>>>> Group: 224.1.1.1, RP: 1.1.1.1, v2, uptime 00:33:37, expires 00:02:04
>>>>> R2#show ip pim rp mapping
>>>>> PIM Group-to-RP Mappings
>>>>> Group(s) 224.1.1.1/32
>>>>> RP 1.1.1.1 (?), v2v1
>>>>> Info source: 1.1.1.1 (?), elected via Auto-RP
>>>>> Uptime: 00:36:19, expires: 00:02:22
>>>>> Group(s) 224.2.2.2/32
>>>>> RP 1.1.1.1 (?), v2v1
>>>>> Info source: 1.1.1.1 (?), elected via Auto-RP
>>>>> Uptime: 00:36:18, expires: 00:02:21
>>>>>
>>>>>
>>>>> Blogs and organic groups at http://www.ccie.net
>>>>>
>>>>> _______________________________________________________________________
>>>>> Subscription information may be found at:
>>>>> http://www.groupstudy.com/list/CCIELab.html
>>>>>
>>>>
>>>>
>>>> Blogs and organic groups at http://www.ccie.net
>>>>
>>>> _______________________________________________________________________
>>>> Subscription information may be found at:
>>>> http://www.groupstudy.com/list/CCIELab.html
Blogs and organic groups at http://www.ccie.net
This archive was generated by hypermail 2.1.4 : Sun Mar 01 2009 - 09:43:39 ARST