RE: igmp filter

From: wing_lam@jossynergy.com
Date: Mon Jun 30 2003 - 11:01:54 GMT-3

Hi Connie,

I use a PC (actually it's a notebook) install a IP/TV viewer, and a 2000
server installed IP/TV server located somewhere in my network; the last
hope router and the IP/TV viewer is located in the same segment. The filter
is applied to the switch port where the IP/TV viewer is installed, no the
router.

For your case, I have no idea where the source of the group from (May be
you have a serial line or ATM); but the igmp filter only means your
router's igmp join request will be filtered by the 3550.

Thx,
BBD (Big Black Dog)

                                                                                                                                       
                      Connie Nie
                      <CNie@EPLUS.com> To: "'wing_lam@jossynergy.com'" <wing_lam@jossynergy.com>
                      Sent by: cc: ccielab@groupstudy.com
                      nobody@groupstudy Subject: RE: igmp filter
                      .com
                                                                                                                                       
                                                                                                                                       
                      06/30/2003 09:11
                      PM
                      Please respond to
                      Connie Nie
                                                                                                                                       
                                                                                                                                       

Hi, BBD. Thanks for getting back to me. Did you use a PC or use a router
simulating a PC?

I am using a router on fa 0/6 to simulating a member of the group using
IGMP
Join-group, and I applied the filter on fa0/6 as well. But it does not seem
to work either way.

Any thoughts?

Thanks,
Connie

-----Original Message-----
From: wing_lam@jossynergy.com [mailto:wing_lam@jossynergy.com]
Sent: Monday, June 30, 2003 12:45 AM
To: Connie Nie
Cc: ccielab@groupstudy.com; nobody@groupstudy.com
Subject: Re: igmp filter

Hi Connie,

Do you mean your router is connect to the Fas 0/4 port?

I have tried and success before for the IGMP filtering in 3550, but I apply
the filter to the port where the PC connected, not the router.

This filter is to permit/deny certain group so that user cannot access, by
filter out IGMP join request only, as the 3550 configurtion guide mentions
(11-20):

"IGMP filtering controls only IGMP membership join requests and has no
relationship with the function that directs the forwarding of multicast
traffic. The filtering feature operates in the same manner whether CGMP or
MVR is used to forward the multicast traffic"

So it seems no effect to router which generate multicast traffic. Would you
please try apply this filter to the PC port?

Thx,
BBD (Big Black Dog)

                      Connie Nie

                      <CNie@EPLUS.com> To:
ccielab@groupstudy.com

                      Sent by: cc:

                      nobody@groupstudy Subject: igmp filter

                      .com

                      06/30/2003 04:27

                      AM

                      Please respond to

                      Connie Nie

Has anyone played with IGMP filter on 3550? I would like to hear your
experience with it. I have been trying to make it work in the past 2 days,
but with no luck. The configuration is fairly straight forward:

IGMP Profile 10
    range 229.0.0.13 229.0.0.13

interface FastEthernet0/4
 switchport access vlan 50
 switchport mode access
 no ip address
 ip igmp filter 10

But on the router that is connected to the port where 229.0.0.13 membership
report is supposed to be blocked, I still see membership report for
229.0.0.13, as well as mroute entry. I tried this on dense and sparse mode
configuration, same result.

Any thoughts?

Thank you very much for your help.

Connie

This archive was generated by hypermail 2.1.4 : Fri Jul 04 2003 - 11:11:14 GMT-3