Re: PIM Bsr hash value

Thanks, have the book at work, will have a read.

On 2 July 2010 18:48, Anthony Sequeira <terry.francona_at_gmail.com> wrote:
> Doyle/Carroll also do a great job explaining this in Routing TCP/IP Volume 2. If you do not have access, search Google with the following terms:
>
> hash-mask-length doyle
>
> You should receive a Google Books excerpt.
>
>
> On Jul 2, 2010, at 1:04 PM, Muzammil Malick wrote:
>
>> Hi
>> Err will we asked to be calculate the hash-mask-length value in:
>> ip pim bsr-candidate [hash-mask-length] [priority]
>> Because the following just goes way over my head:
>>
>> Input: Group Address (G), RP-Set (R1, R2 Rn), Mask. This information
>> is used as the input to the hash funcation. R1, R2.. Rn are IP
>> addresses of the RPs mapped to the Group address G. The Mask is
>> calculated based on the mask-length distributed by the BSR.
>>
>> 1) Among the routers in RP-Set, select those that have numerically
>> lowest priority values. By default all cRPs advertise priority of
>> zero, so they all are eligible.
>>
>> 2) For every RP IP address, calculate the hash function value:
>>
>> value1 = Hash(G&Mask, R1),
>> value2 = Hash(G&Mask, R2)
>> valueN = Hash(G&Mask,Rn).
>>
>> Anthony forgive my ignorance here but I cant quite grasp what you are
>> saying in step 1 and 2.
>>
>> On 2 July 2010 07:43, Gabriel Adam Kujawski <gabriel_at_brama.waw.pl> wrote:
>>>
>>> IMHO you should also take a look at RFC4601
>>> (http://tinyurl.com/348slwc)
>>>
>>> Take a closer look at point "4.7.2 Hash Function".
>>>
>>> --
>>> BRs
>>> Gab
>>>
>>>
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>>
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Received on Fri Jul 02 2010 - 18:56:49 ART