[e-nsp] Summit450X - strange IGMP-snooping on port connected to Linux server?

[Ronald Nsubuga]

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
>
> *
> *
>
> ------------------------------
> Connect to the next generation of MSN Messenger  Get it now!
> <http://imagine-msn.com/messenger/launch80/default.aspx?locale=en-us&source=wlmailtagline>
> ------------------------------
> Explore the seven wonders of the world Learn more!<http://search.msn.com/results.aspx?q=7+wonders+world&mkt=en-US&form=QBRE>
>
> _______________________________________________
> extreme-nsp mailing list
> extreme-nsp at puck.nether.net
> https://puck.nether.net/mailman/listinfo/extreme-nsp
>



-- 
Ronnie Tash
---------
A: Because we read from top to bottom, left to right.
Q: Why should i start my reply below the quoted text?
- -- http://www.i-hate-computers.demon.co.uk/
----------------------------------------------
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <https://puck.nether.net/pipermail/extreme-nsp/attachments/20080916/0da9c2eb/attachment-0001.html>