From: Scott, Tyson C (tyson.scott@hp.com)
Date: Fri Apr 02 2004 - 12:32:04 GMT-3
But Craig you are also stating what my question is. The groups you are
stating are what I understand as administratively scoped addresses. In
some of the practice labs I have done they have used the boundary
command to block addresses in the 224.0.0.0/8 range. From what I
understand this is not in the administratively scoped range. So am I
wrong or is the help topic in IOS wrong?
R4(config-if)#ip multicast ?
Boundary Boundary for administratively scoped multicast addresses
Regards,
Tyson Scott
-----Original Message-----
From: Craig Dorry [mailto:chdorry@yahoo.com]
Sent: Friday, April 02, 2004 7:33 AM
To: Scott, Tyson C; ccielab@groupstudy.com
Subject: Re: Multicast Boundary command
Tyson - I think you are misinterpreting the
"administratively scoped" addresses. I have used the
boundary command in the following way:
Multiple campuses running multicast, so we defined 3
"administrative scopes" (3 different blocks of
multicast addresses) from the 239.0.0.0/8 block of
addresses - campus local (never leaves the campus),
regional (stays within the United States), and global.
The boundary was applied to the "campus local" which
is multicast groups where all sources and receivers
are at the same physical campus. In this case we used
the same scope for all campus local multicast at each
campus. So on the connections from the Campus to the
MAN we used the ip multicast boundary 1 command, and
then defined access-list 1 deny 239.1.0.0 0.0.255.255
and permit everything else. (239.1.0.0/16 groups were
to never leave the campus)
Hope this helps.
--- "Scott, Tyson C" <tyson.scott@hp.com> wrote:
> Group,
>
> I am confused as to the topic of the use
> of Boundary with
> Multicast. When you use the help from IOS it says
> it is for
> administratively scoped Multicast addresses. I
> thought the
> administratively scoped addresses where 239.0.0.0 to
> 239.255.255.255.
> So does this command only apply to this range or is
> the help menu
> misleading?
>
>
>
> R4(config-if)#ip multicast ?
>
> Boundary Boundary for administratively scoped
> multicast addresses
>
>
>
> Regards,
>
> Tyson Scott
>
>
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