All things related to multicast

["Richard Mavrogeanes" <>]

While also less-than-perfect, if the source is video and requires a SDP as with MPEG-4 (.nsc as with WM/VC1), you can place that reference file on a password-protected web server and only give access to those you wish. You can do similar reference file technique for MPEG-2. If you are not advertising the SAP, this can be a useful technique in some cases.  Again, while less-than-perfect, it may be a practical way to get at least close you what you need.

 

 

---

From: Lee, Kang [mailto:]
Sent: Sunday, November 11, 2007 1:13 PM
To: Ruud Toonders;
Subject: RE: dynamic access controll on multicast groups

 

In Cisco case, there are no well defined mechanism but still have few method to achieve  your goal.

 

IGMP runs on switch level and that is last mile for the users. So if you control access to IGMP group, you can do some level of access control but this is pretty tough to do on each user based. In Cisco, these are called multicast profiling and igmp access-group.  I can send you more detail doc. It is not intuitive.

 

Then you can control which rp is hadnlding what groups by putting some more filter. Again this does not work as way as typical access list.

 

To control each user, it is possible but it is almost impractical. That is how much I know.

 

Thanks

 

From: Ruud Toonders [mailto:]
Sent: Sunday, November 11, 2007 4:06 AM
To:
Subject: dynamic access controll on multicast groups

 

Hi All,

 

I am bit of a newbie in this, but does anybody know how I can dynamically do access control on multicast group reception?

 

For example:

I have different multicast groups A,B,C for usergroups gA, gB, gC.

Normally I can assign VLANs and setup ACL’s in such a way that for example:

-users to gA can only see Group A

-users to gB can only see Group A,B

-users to gC can only see Group B,C

 

However as soon as a user belonging to gB gets the new access right to belong to group gC, then manually we need to reassign the VLAN again for him.

Is there a simpler/easier way of doing this preferably from an external piece of software or software interface?

 

Regards,

 

Ruud Toonders

 

No virus found in this outgoing message.
Checked by AVG Free Edition.
Version: 7.5.503 / Virus Database: 269.15.28/1123 - Release Date: 10/11/2007 15:47