From: Sydney Hawke (sydneyhawke@yahoo.com)
Date: Fri Feb 09 2007 - 07:45:51 ART
Hi and thanks.
I am running ip igmp snooping on the switch.
So I still do
not understand, please help.
Best Regards,
Sydney
----- Original
Message ----
From: Ivan <ivan@iip.net>
To: ccielab@groupstudy.com; Sydney
Hawke <sydneyhawke@yahoo.com>
Sent: Friday, February 9, 2007 10:16:57 AM
Subject: Re: Multicast MAC address
sh mac-address-table display only mac
addess learned by the switch. Multicast
address can't be a src MAC-address of
packet consecuently it will never
displayed by command above.
You must use
special technology such as RGMP, CGMP, IGMP snooping or manual
configuring to
see this information. Without it all multicast traffic spread
across all
ports in switch.
On Friday 09 February 2007 00:37, Sydney Hawke wrote:
>
Hello,
>
> Where is the 0100.5e01.0101 address?
>
> "sh mac-address-table
multicast"
> is empty?
> I have a scenario where I would like to check the
mapped multicast
> mac-address for a multicast group and I thought I could do
that after
> enabling the ip igmp join-group 224.1.1.1 on a SVI or connected
router
> interfaces to the switch ports.
> I have attached 4 routers and 2 of
then are simulating
> receivers and the other two are just there to make me
believe in the igmp
> snooping ie that it does not flood the non receiver
ports. All "hosts" are
> connected to the same vlan.
> xxxxxxxxxxxxxxxxxxxxxxx
> sw4#sh mac-address-table
> multicast
> Vlan Mac Address Type
Ports
> ---- -----------
> ---- -----
> <-- I expected to have
something here ie the mapped 224.1.1.1 -->
> 0100.5e01.0101
> sw4#
>
xxxxxxxxxxxxxxxxxxxxxxx
> I created a static entry and that
> show up???
>
sw4#sh mac-address-table multicast
> Vlan Mac Address Type
> Ports
>
---- ----------- ---- -----
> 100 0100.5e00.1234
> USER
Gi0/23
> sw4#
> xxxxxxxxxxxxxxxxxxxxxxx
> This is one of the routers
>
simulating a receiver connected to sw4:
> FRS#sh ip igmp groups 224.1.1.1
>
IGMP
> Connected Group Membership
> Group Address Interface
Uptime
> Expires Last Reporter
> 224.1.1.1 FastEthernet0/0
01:05:10
> 00:02:03 150.1.56.10
> FRS#
> Does anyone have a small test
scenario I could test
> so I actually can see the dynamic multicast
mac-address entry that I though
> igmp snooping would do or what am I missing?
>
> Best Regards,
>
> Sydney
>
This archive was generated by hypermail 2.1.4 : Thu Mar 01 2007 - 07:38:46 ART