From: Jay.Hanke@alltel.com
Date: Mon Oct 08 2007 - 15:29:50 ART
It must be a mistake in the docs. I mocked it up on the routers and the
groups. If both RPs are set to bidirectional all the groups go into
bidirectional. If one RP has the bidirectional argument only the groups
associated with that RP are bidirectional which makes a lot more sense.
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
shiran guez
Sent: Monday, October 08, 2007 11:38 AM
To: Hanke, Jay
Cc: ccielab@groupstudy.com
Subject: Re: Bidir-PIM: Example
bidirectional dose not mean it will be sparse or dense mode.
if you want sparse or dense then you need simply to do ip pim
sparse-dense mode this command under the interface will insure you will
work spars and if there is no RP or you lost the connection to the RP
then you will work dense.
the bidirectional is as I said before only for sparse mode. Bidir-PIM is
designed to be used for many-to-many applications within individual PIM
domains
On 10/8/07, Jay.Hanke@alltel.com <Jay.Hanke@alltel.com> wrote:
>
> If I understand correctly groups not matching the RP group access left
> will fail back to dense-mode unless otherwise allowed.
>
> The example is supposed to have an RP that can support 3 blocks of
> groups
>
> 224/8 and 227/8 as bidirectional
> 226/8 as only sparse mode only
>
> If you configure sparse mode only, you issue the same command without
> the bidirectional. So if I wanted 224/8 and 227/8 to be bidirectional
> (and 226/8 as sparse only), wouldn't the config for the RP be as
> follows?
>
> Ip multicast-routing
> !
> Ip pim bidir-enable
> !
> ip pim rp-address 10.0.1.1 45 bidir
> ip pim rp-address 10.0.2.1 46
> !
> access-list 45 permit 224.0.0.0 0.255.255.255 access-list 45 permit
> 227.0.0.0 0.255.255.255 access-list 46 permit 226.0.0.0 0.255.255.255
>
>
> If the example from Cisco is correct, how does ios know which ones are
> sparse mode and which ones are bidirectional?
>
> Thanks,
>
> jay
>
> -----Original Message-----
> From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf
> Of shiran guez
> Sent: Monday, October 08, 2007 10:24 AM
> To: Hanke, Jay
> Cc: ccielab@groupstudy.com
> Subject: Re: Bidir-PIM: Example
>
> I don't understand why you expect it to be stripped off?
> the bidirectional is configured together with sparse mode, the
> bidirectional job is like to be the master of a sparse mode domain to
> control several RP's by adding a designated forwarder (DF)
>
> http://www.cisco.com/univercd/cc/td/doc/product/software/ios124/124cg/
> hi
> mc_c/chap05/mcbbasic.htm#wp1080866
>
>
> On 10/8/07, Jay.Hanke@alltel.com <Jay.Hanke@alltel.com> wrote:
> >
> > Agreed, but my question is regarding running two RP's on the same
> > router, one for Bidirectional and one for Sparse mode. Otherwise,
> > how would the routers know to allow upstream traffic for a
> > particular
> group?
> >
> > ------------------------------
> > *From:* shiran guez [mailto:shiranp3@gmail.com]
> > *Sent:* Monday, October 08, 2007 12:21 AM
> > *To:* Hanke, Jay
> > *Cc:* ccielab@groupstudy.com
> > *Subject:* Re: Bidir-PIM: Example
> >
> >
> > no, when you set a static RP address you must set it on all the
> > Multicast Routers inclde the RP himself.
> >
> >
> >
> >
> > On 10/7/07, Jay.Hanke@alltel.com <Jay.Hanke@alltel.com> wrote:
> > >
> > > In the bidir-pim example on this page:
> > >
> > >
> > > http://www.cisco.com/univercd/cc/td/doc/product/software/ios124/12
> > > 4c
> > > g/himc_c/
> > > chap05/mcbbasic.htm#wp1134906
> > >
> > > The following example is cited with the description saying that
> > > group
> > > 226/8
> > > will be in sparse mode rather than bidirectional mode.
> > >
> > > !Enable IP multicast routing
> > > ip multicast-routing
> > > !Enable bidir-PIM
> > > ip pim bidir-enable
> > > interface loopback 0
> > > description One Loopback address for this routers Bidir Mode RP
> > > function ip address 10.0.1.1 255.255.255.0 !
> > > interface loopback 1
> > > description One Loopback address for this routers Sparse Mode RP
> > > function ip address 10.0.2.1 255.255.255.0
> > >
> > > ip pim rp-address 10.0.1.1 45 bidir ip pim rp-address 10.0.2.1 46
> > > bidir
> > >
> > > access-list 45 permit 224.0.0.0 0.255.255.255 access-list 45
> > > permit 227.0.0.0 0.255.255.255 access-list 46 permit 226.0.0.0
> > > 0.255.255.255
> > >
> > > Shouldn't the ip pim rp-address 10.0.2.1 46 bidir command have the
> > > bidir stripped off?
> > >
> > > Thanks,
> > >
> > > jay
> > >
> > >
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> > --
> > Shiran Guez
> > MCSE CCNP NCE1
> > http://cciep3.blogspot.com
> > http://www.linkedin.com/in/cciep3
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> --
> Shiran Guez
> MCSE CCNP NCE1
> http://cciep3.blogspot.com
> http://www.linkedin.com/in/cciep3
>
> ______________________________________________________________________
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-- Shiran Guez MCSE CCNP NCE1 http://cciep3.blogspot.com http://www.linkedin.com/in/cciep3
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