[e-nsp] Summit450X - strange IGMP-snooping on port connected to Linux server?
Ronald Nsubuga
napstertash at gmail.com
Tue Sep 16 08:53:54 EDT 2008
Hello all,
Sorry to take you back guys, Am wondering how you can enable the IGMP on a
layer 2 switch without preparing the switch for any routing and hence having
the switch at layer 3.
Because the way I understand this you can't enable igmp OR ipmcforwarding
without having ipforwarding enabled.
If you have some good results with the ethereal then you can stop the igmp
service OR deman of the unix server.
Regards
On Tue, Sep 16, 2008 at 3:13 PM, Mike Louis <MLouis at nwnit.com> wrote:
> Can you disable IGMP on the server? is it going to need to receive MC
> streams itself or just send them?
> ------------------------------
> *From:* extreme-nsp-bounces at puck.nether.net [
> extreme-nsp-bounces at puck.nether.net] On Behalf Of F J [
> ripprapp at hotmail.com]
> *Sent:* Tuesday, September 16, 2008 6:25 AM
> *To:* extreme-nsp at puck.nether.net
>
> *Subject:* Re: [e-nsp] Summit450X - strange IGMP-snooping on port
> connected to Linux server?
>
> 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 +0300
> From: napstertash at gmail.com
> To: ripprapp at hotmail.com
> Subject: 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 Regards
> Fredrik
>
> X450a-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 Yes
>
> VLAN 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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---------
A: Because we read from top to bottom, left to right.
Q: Why should i start my reply below the quoted text?
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