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From: Ivan <ivan@iip.net>
To: ccielab@groupstudy.com, "Cisco Key" <ciscokey@googlemail.com>
Subject: Re: BSR - hash mask length field
Date: Mon, 6 Nov 2006 15:00:37 +0300
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IMO it is not nessesary such distribution of RP. May be
1, 3, 5, 7
0, 2, 4, 6

This depend of hash algorithm.
May be lab it up help understanding.

On Monday 06 November 2006 00:07, Cisco Key wrote:
> Correct me if I am wrong but its seen the same as a Subnet Mask
> So for example
>
> 225.1.1.0
> 225.1.1.1
> 225.1.1.2
> 225.1.1.3
> 225.1.1.4
> 225.1.1.5
> 225.1.1.6
> 225.1.1.7
>
> Statement would be - #ip pim bsr-candidate loopback 29 as in /29
>
> If you want to load balance then
> 225.1.1.0
> 225.1.1.1
> 225.1.1.2
> 225.1.1.3
>
> Statement would be - #ip pim bsr-candidate loopback 30 as in /30
>
> 225.1.1.4
> 225.1.1.5
> 225.1.1.6
> 225.1.1.7
>
> Statement would be - #ip pim bsr-candidate loopback 30 as in /30
>
> Please tell me if this is correct
>
> Regards
> Paul
>
> On 03/11/06, Adhu Ajit <adhu_ajit@yahoo.com> wrote:
> > Folks,
> >
> > ip pim bsr-candidate [intf] [hash-mask-length] [priority}
> >
> > I looked this up in the Cisco CD and I got:
> >
> > hash-mask-length: Length of a mask (32 bits maximum) that is to be ANDed
> > with the group address before the hash function is called. All groups
> > with the same seed hash (correspond) to the same RP. For example, if this
> > value is 24, only the first 24 bits of the group addresses matter. This
> > fact allows you to get one RP for multiple groups.
> >
> >
> > I dont fully understand this option. Can someone please explain with an
> > example ?
> >
> > Thanks,
> > Adhu.
> >
> >
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-- 
Ivan


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