[e-nsp] Summit450X - strange IGMP-snooping on port connected to Linux server?
F J
ripprapp at hotmail.com
Tue Sep 16 06:25:37 EDT 2008
Hi,
Thanks for your answer. But isn't the BCR and CBSR config only important if
you are running the Switch in layer3?
I am only using it as a layer2 switch.
I still think that it is strange that the switch is considering this server as being
a "router" when running the show commands. There must be some critera for
the switch to do that or?
More info about this Linux server:
My Linux server is running JBoss and I see some IGMP-join packages to going to
224.0.0.75 and 228.30.4.76 when starting up.
Best Regards
/// Fredrik
Date: Tue, 16 Sep 2008 11:52:02 +0300From: napstertash at gmail.comTo: ripprapp at hotmail.comSubject: Re: [e-nsp] Summit450X - strange IGMP-snooping on port connected to Linux server?CC: extreme-nsp at puck.nether.net
Hello FJ,
On Tue, Sep 16, 2008 at 8:21 AM, F J <ripprapp at hotmail.com> wrote:
Hi,I am using a Summit450X as a layer2 switch in my multicast network. I am using PIM SM on my routers and I am running IGMP snooping on my layer2 switches.On this 450X-switch I have a HP server runnning Linux connected to port 21.When running some show commands (see below) it looks like the switch thinks that the server is a router? And that it should get all Multicast streams?
You might have to play a lot more with the priorities so you figure this out, I would think.
Can anyone explain what is causing this?
I think the answer might be between the configuration settings you have got for both the BSR and CBSR.
Is my switch misconfigured or is my server doing something strange?What is the criteria for being listed as a router by the switch?Port 45 is connected to the closest router.Any ideas of what could be causing this kind of behaviour is appreciated!
If you don't want this box to participate the the multicast traffic then I would suggest you remove that port form the selected list, OR make the specified port that you want to be the BSR by using the priorities.
Hope it helps.
Regards
Best RegardsFredrikX450a-48tdc.19 # sh igmp snooping Vlan Vid Port #Senders #Receivers Router Enable-------------------------------------------------------------- SN102 164 6 Yes 19 2 No 20 5 No 21 3 Yes 45 0 YesVLAN SN102 (164) Snooping=Enabled Group Sender Age 239.1.1.1 10.21.65.5 14 239.1.1.2 10.21.65.5 10 228.0.198.75 10.21.64.4 25 228.0.198.76 10.21.64.4 13 228.0.198.77 10.21.64.4 13 5 Incoming multicast streams Port Host Subscribed Age 19 10.21.64.2 225.10.10.10 66 19 10.21.64.2 226.10.10.10 63 20 10.21.64.3 224.2.127.254 67 20 10.21.64.3 224.2.127.255 69 20 10.21.64.3 234.5.6.7 63 20 10.21.64.3 239.1.1.1 64 20 10.21.64.3 239.1.1.2 61 21 10.21.64.4 228.0.198.75 68 21 10.21.64.4 228.0.198.76 63 21 10.21.64.4 228.0.198.77 60 21 10.21.64.4 All Groups 69 45 10.21.64.1 All Groups 1
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