RE: /128 mcast group in IPv6 multicast

Hi Jeffrey,

Unless things are different in IPv6 mcast, the ACL you've specified allows
sets FE45:1:2:3::5 to be the RP for any mcast group.

The ACL should be thought of as (S,G), i.e. the source part of the ACL
specifies the allowed mcast Sources and the destination part of the ACL
specifies the allowed mcast Groups.
(If my understanding here is wrong, please correct me!)

The functionality that doesn't work is I'm trying to set the destination
part of the ACL as a host, not the source part.

Cheers,
Gavin

-----Original Message-----
From: nobody_at_groupstudy.com [mailto:nobody_at_groupstudy.com] On Behalf Of
Jeffrey Pazahanick
Sent: 19 February 2010 21:25
To: Gavin Schokman
Cc: Gavin Schokman; ccielab_at_groupstudy.com
Subject: Re: /128 mcast group in IPv6 multicast

Gavin,
This works for me...

ipv6 pim rp-address FE45:1:2:3::5 TST
!
!
!
!
ipv6 access-list TST
 permit ipv6 host FE90:1:1:1::1 any
!

On Fri, Feb 19, 2010 at 4:29 AM, Gavin Schokman
<Gavin.Schokman_at_nscglobal.com> wrote:
> So no-one able to answer this one?
>
> Cheers,
> Gavin
>
>
> -----Original Message-----
> From: nobody_at_groupstudy.com [mailto:nobody_at_groupstudy.com] On Behalf
> Of Gavin Schokman
> Sent: 18 February 2010 11:58
> To: ccie_ka_at_gmx.de; Gavin Schokman; ccielab_at_groupstudy.com
> Subject: RE: /128 mcast group in IPv6 multicast
>
> Unfortunately, "ipv6 mld access-group" will only filter out incoming
> MLD messages, not configure the router to act as an RP for the single
> group
> - which is what my question is.
>
> This one is curly... There doesn't seem to be any references on the
> internet regarding configuring RP for a single mcast group.
>
> Kind regards,
> Gavin
>
>
>
>
>
> -----Original Message-----
> From: nobody_at_groupstudy.com [mailto:nobody_at_groupstudy.com] On Behalf
> Of ccie_ka_at_gmx.de
> Sent: 18 February 2010 06:33
> To: Gavin Schokman; ccielab_at_groupstudy.com
> Subject: Re: /128 mcast group in IPv6 multicast
>
> hi,
>
> you can configure it on the interface of the RP
>
> Assume the RP is Rx :
> interface fa0/1
> ipv6 mld access-group ACL-for-IPv6
>
> ipv6 access-list ACL-for-IPv6
> permit ipv6 any host x::x:x
>
> Dennis
> -------- Original-Nachricht --------
>> Datum: Thu, 18 Feb 2010 00:52:17 -0000
>> Von: "Gavin Schokman" <g_schokman_at_yahoo.com.au>
>> An: ccielab_at_groupstudy.com
>> Betreff: /128 mcast group in IPv6 multicast
>
>> Hi GS'ers,
>>
>> Been having some trouble with IPv6 multicast and can't seem to find
>> the answer anywhere.
>>
>> How does one configure a router to be RP for a single mcast group,
>> i.e. a /128?
>>
>> I've tried static-rp & BSR, but I get errors and it doesn't work
>>
>> ### using static-RP
>>
>> RSRack8R5(config)# ipv6 access-list RP-LIST
>> RSRack8R5(config-ipv6-acl)# permit any host FF05:1:1:1::1
>>
>> RSRack8R5(config)# ipv6 pim rp-address 2001:150:8:5::5 RP-LIST
>> %Error: Group prefix must be less than 128, skipping
>> FF05:1:1:1::1/128
>>
>> ! by entering the command again, the IOS will not report an error,
>> however the group is silently ignored (witnessed by the group not
>> being shown in "show ipv6 pim groups")
>>
>>
>> ### using BSR
>>
>> ! same ACL definition for RP-LIST
>>
>> ! add "debug ipv6 pim bsr"
>>
>> RSRack8R5(config)# ipv6 pim bsr candidate rp 2001:150:8:5::5
>> group-list RP-LIST *Mar 1 03:39:54.959: IPv6 BSR: Building C-RP Adv
>> for 2001:150:8:5::5, priority 192, holdtime 150 *Mar 1 03:39:54.963:
>> IPv6 BSR: Ignoring invalid prefix FF05:1:1:1::1/128
>> -
>> Not added to C-RP Adv
>>
>>
>> This one's got me heavily stuck, so any help will be greatly
> appreciated.
>>
>> Cheers,
>> Gavin
>>
>>
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Received on Sat Feb 20 2010 - 13:12:27 ART