Mailing List Archive

Hello FJ,

On Tue, Sep 16, 2008 at 8:21 AM, F J <ripprapp@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@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/
----------------------------------------------

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@gmail.comTo: ripprapp@hotmail.comSubject: Re: [e-nsp] Summit450X - strange IGMP-snooping on port connected to Linux server?CC: extreme-nsp@puck.nether.net
Hello FJ,
On Tue, Sep 16, 2008 at 8:21 AM, F J <ripprapp@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



Connect to the next generation of MSN Messenger Get it now!

Explore the seven wonders of the world Learn more!_______________________________________________extreme-nsp mailing listextreme-nsp@puck.nether.nethttps://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/----------------------------------------------
_________________________________________________________________
Connect to the next generation of MSN Messenger 
http://imagine-msn.com/messenger/launch80/default.aspx?locale=en-us&source=wlmailtagline

Hi Frederik,



If your server is considered as a Router, that means that it is advertising
on multicast address : 224.0.0.2



So do a TCPDUMP to check if so and verify if you don't have a router feature
enabled.



Regards, Fabian.



From: extreme-nsp-bounces@puck.nether.net
[mailto:extreme-nsp-bounces@puck.nether.net] On Behalf Of F J
Sent: mardi 16 septembre 2008 12:26
To: extreme-nsp@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@gmail.com
To: ripprapp@hotmail.com
Subject: Re: [e-nsp] Summit450X - strange IGMP-snooping on port connected to
Linux server?
CC: extreme-nsp@puck.nether.net



Hello FJ,

On Tue, Sep 16, 2008 at 8:21 AM, F J <ripprapp@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 <http://239.1.1.1/> 10.21.65.5 <http://10.21.65.5/>
14
239.1.1.2 <http://239.1.1.2/> 10.21.65.5 <http://10.21.65.5/>
10
228.0.198.75 <http://228.0.198.75/> 10.21.64.4 <http://10.21.64.4/>
25
228.0.198.76 <http://228.0.198.76/> 10.21.64.4 <http://10.21.64.4/>
13
228.0.198.77 <http://228.0.198.77/> 10.21.64.4 <http://10.21.64.4/>
13
5 Incoming multicast streams

Port Host Subscribed Age
19 10.21.64.2 <http://10.21.64.2/> 225.10.10.10
<http://225.10.10.10/> 66
19 10.21.64.2 <http://10.21.64.2/> 226.10.10.10
<http://226.10.10.10/> 63
20 10.21.64.3 <http://10.21.64.3/> 224.2.127.254
<http://224.2.127.254/> 67
20 10.21.64.3 <http://10.21.64.3/> 224.2.127.255
<http://224.2.127.255/> 69
20 10.21.64.3 <http://10.21.64.3/> 234.5.6.7
<http://234.5.6.7/> 63
20 10.21.64.3 <http://10.21.64.3/> 239.1.1.1
<http://239.1.1.1/> 64
20 10.21.64.3 <http://10.21.64.3/> 239.1.1.2
<http://239.1.1.2/> 61
21 10.21.64.4 <http://10.21.64.4/> 228.0.198.75
<http://228.0.198.75/> 68
21 10.21.64.4 <http://10.21.64.4/> 228.0.198.76
<http://228.0.198.76/> 63
21 10.21.64.4 <http://10.21.64.4/> 228.0.198.77
<http://228.0.198.77/> 60
21 10.21.64.4 <http://10.21.64.4/> All Groups 69
45 10.21.64.1 <http://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@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/
----------------------------------------------



_____

Connect to the next generation of MSN Messenger Get it now!
<http://imagine-msn.com/messenger/launch80/default.aspx?locale=en-us&source=
wlmailtagline>

In my experience, IGMP snooping will not work unless the layer 2 switch snoops the client report. Meaning you have to have clients who want to join a group sending IGMP join reports that the switch can snoop. This usually requires that something be performing the quierier process, ie a multicast enabled router. 224.0.0.2 is all routers MC address. Enable PIM on the router and see if IGMP snooping works.
________________________________
From: extreme-nsp-bounces@puck.nether.net [extreme-nsp-bounces@puck.nether.net] On Behalf Of Fabian [fabian.extr@gmail.com]
Sent: Tuesday, September 16, 2008 7:28 AM
To: extreme-nsp@puck.nether.net
Subject: Re: [e-nsp] Summit450X - strange IGMP-snooping on port connected to Linux server?

Hi Frederik,

If your server is considered as a Router, that means that it is advertising on multicast address : 224.0.0.2

So do a TCPDUMP to check if so and verify if you don’t have a router feature enabled.

Regards, Fabian.

From: extreme-nsp-bounces@puck.nether.net [mailto:extreme-nsp-bounces@puck.nether.net] On Behalf Of F J
Sent: mardi 16 septembre 2008 12:26
To: extreme-nsp@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@gmail.com
To: ripprapp@hotmail.com
Subject: Re: [e-nsp] Summit450X - strange IGMP-snooping on port connected to Linux server?
CC: extreme-nsp@puck.nether.net

Hello FJ,
On Tue, Sep 16, 2008 at 8:21 AM, F J <ripprapp@hotmail.com<mailto:ripprapp@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<http://239.1.1.1/> 10.21.65.5<http://10.21.65.5/> 14
239.1.1.2<http://239.1.1.2/> 10.21.65.5<http://10.21.65.5/> 10
228.0.198.75<http://228.0.198.75/> 10.21.64.4<http://10.21.64.4/> 25
228.0.198.76<http://228.0.198.76/> 10.21.64.4<http://10.21.64.4/> 13
228.0.198.77<http://228.0.198.77/> 10.21.64.4<http://10.21.64.4/> 13
5 Incoming multicast streams

Port Host Subscribed Age
19 10.21.64.2<http://10.21.64.2/> 225.10.10.10<http://225.10.10.10/> 66
19 10.21.64.2<http://10.21.64.2/> 226.10.10.10<http://226.10.10.10/> 63
20 10.21.64.3<http://10.21.64.3/> 224.2.127.254<http://224.2.127.254/> 67
20 10.21.64.3<http://10.21.64.3/> 224.2.127.255<http://224.2.127.255/> 69
20 10.21.64.3<http://10.21.64.3/> 234.5.6.7<http://234.5.6.7/> 63
20 10.21.64.3<http://10.21.64.3/> 239.1.1.1<http://239.1.1.1/> 64
20 10.21.64.3<http://10.21.64.3/> 239.1.1.2<http://239.1.1.2/> 61
21 10.21.64.4<http://10.21.64.4/> 228.0.198.75<http://228.0.198.75/> 68
21 10.21.64.4<http://10.21.64.4/> 228.0.198.76<http://228.0.198.76/> 63
21 10.21.64.4<http://10.21.64.4/> 228.0.198.77<http://228.0.198.77/> 60
21 10.21.64.4<http://10.21.64.4/> All Groups 69
45 10.21.64.1<http://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@puck.nether.net<mailto:extreme-nsp@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/
----------------------------------------------

________________________________
Connect to the next generation of MSN Messenger Get it now! <http://imagine-msn.com/messenger/launch80/default.aspx?locale=en-us&source=wlmailtagline>

________________________________
Note: This message and any attachments is intended solely for the use of the individual or entity to which it is addressed and may contain information that is non-public, proprietary, legally privileged, confidential, and/or exempt from disclosure. If you are not the intended recipient, you are hereby notified that any use, dissemination, distribution, or copying of this communication is strictly prohibited. If you have received this communication in error, please notify the original sender immediately by telephone or return email and destroy or delete this message along with any attachments immediately.

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@puck.nether.net [extreme-nsp-bounces@puck.nether.net] On Behalf Of F J [ripprapp@hotmail.com]
Sent: Tuesday, September 16, 2008 6:25 AM
To: extreme-nsp@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@gmail.com
To: ripprapp@hotmail.com
Subject: Re: [e-nsp] Summit450X - strange IGMP-snooping on port connected to Linux server?
CC: extreme-nsp@puck.nether.net


Hello FJ,

On Tue, Sep 16, 2008 at 8:21 AM, F J <ripprapp@hotmail.com<mailto:ripprapp@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<http://239.1.1.1/> 10.21.65.5<http://10.21.65.5/> 14
239.1.1.2<http://239.1.1.2/> 10.21.65.5<http://10.21.65.5/> 10
228.0.198.75<http://228.0.198.75/> 10.21.64.4<http://10.21.64.4/> 25
228.0.198.76<http://228.0.198.76/> 10.21.64.4<http://10.21.64.4/> 13
228.0.198.77<http://228.0.198.77/> 10.21.64.4<http://10.21.64.4/> 13
5 Incoming multicast streams

Port Host Subscribed Age
19 10.21.64.2<http://10.21.64.2/> 225.10.10.10<http://225.10.10.10/> 66
19 10.21.64.2<http://10.21.64.2/> 226.10.10.10<http://226.10.10.10/> 63
20 10.21.64.3<http://10.21.64.3/> 224.2.127.254<http://224.2.127.254/> 67
20 10.21.64.3<http://10.21.64.3/> 224.2.127.255<http://224.2.127.255/> 69
20 10.21.64.3<http://10.21.64.3/> 234.5.6.7<http://234.5.6.7/> 63
20 10.21.64.3<http://10.21.64.3/> 239.1.1.1<http://239.1.1.1/> 64
20 10.21.64.3<http://10.21.64.3/> 239.1.1.2<http://239.1.1.2/> 61
21 10.21.64.4<http://10.21.64.4/> 228.0.198.75<http://228.0.198.75/> 68
21 10.21.64.4<http://10.21.64.4/> 228.0.198.76<http://228.0.198.76/> 63
21 10.21.64.4<http://10.21.64.4/> 228.0.198.77<http://228.0.198.77/> 60
21 10.21.64.4<http://10.21.64.4/> All Groups 69
45 10.21.64.1<http://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@puck.nether.net<mailto:extreme-nsp@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/
----------------------------------------------

________________________________
Connect to the next generation of MSN Messenger Get it now! <http://imagine-msn.com/messenger/launch80/default.aspx?locale=en-us&source=wlmailtagline>

________________________________
Note: This message and any attachments is intended solely for the use of the individual or entity to which it is addressed and may contain information that is non-public, proprietary, legally privileged, confidential, and/or exempt from disclosure. If you are not the intended recipient, you are hereby notified that any use, dissemination, distribution, or copying of this communication is strictly prohibited. If you have received this communication in error, please notify the original sender immediately by telephone or return email and destroy or delete this message along with any attachments immediately.

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@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@puck.nether.net [
> extreme-nsp-bounces@puck.nether.net] On Behalf Of F J [
> ripprapp@hotmail.com]
> *Sent:* Tuesday, September 16, 2008 6:25 AM
> *To:* extreme-nsp@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@gmail.com
> To: ripprapp@hotmail.com
> Subject: Re: [e-nsp] Summit450X - strange IGMP-snooping on port connected
> to Linux server?
> CC: extreme-nsp@puck.nether.net
>
>
> Hello FJ,
>
> On Tue, Sep 16, 2008 at 8:21 AM, F J <ripprapp@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@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/
> ----------------------------------------------
>
> ------------------------------
> Connect to the next generation of MSN Messenger Get it now!
> <http://imagine-msn.com/messenger/launch80/default.aspx?locale=en-us&source=wlmailtagline>
>
> ------------------------------
> Note: This message and any attachments is intended solely for the use of
> the individual or entity to which it is addressed and may contain
> information that is non-public, proprietary, legally privileged,
> confidential, and/or exempt from disclosure. If you are not the intended
> recipient, you are hereby notified that any use, dissemination,
> distribution, or copying of this communication is strictly prohibited. If
> you have received this communication in error, please notify the original
> sender immediately by telephone or return email and destroy or delete this
> message along with any attachments immediately.
>
> _______________________________________________
> extreme-nsp mailing list
> extreme-nsp@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/
----------------------------------------------

Hi,
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.

It might be those packets that causes the problem. But I do not understand how they can make the 450X think that the server is a router or making the IGMP-snooping funcionality stop working...

Best Regards
/// Fredrik

> Date: Wed, 17 Sep 2008 15:10:10 +0530> From: shankarp5@gmail.com> To: extreme-nsp@puck.nether.net> Subject: Re: [e-nsp] Summit450X - strange IGMP-snooping on port connected to Linux server?> > Hey> > Check if the server is sending out any control protocol or routing> protocols or any other packet that you expect only a router to send. I> really dont know the list, but as you suggested there are few protocol> packets, observing which the L2 box assumes that there is a router on> the other end....> > regards,> shankar> > > On Tue, Sep 16, 2008 at 6:24 PM, F J <ripprapp@hotmail.com> wrote:> > Hi,> > I am running a Juniper M10 as Multicast router in my network. It> > automatically becomes the DR of the "VLAN" as the Linux server is situated> > on. I also have other Linux servers on that switch in the same VLAN and> > IGMP-snooping is working for them.> >> > They are running RedHat and not Suse though. They are not listed as "Router"> > by the Summit450X.> >> > When doing a tcpdump on my Linux server I do not see any traffic going to> > 224.0.0.2 (all routers) so I don't understand why the switch lists that> > Linux as a router. Really strange...> >> > BR> > /// Fredrik> >> >> >> > ________________________________> > From: MLouis@nwnit.com> > To: fabian.extr@gmail.com; extreme-nsp@puck.nether.net> > Date: Tue, 16 Sep 2008 08:10:44 -0400> > Subject: Re: [e-nsp] Summit450X - strange IGMP-snooping on port connected to> > Linux server?> >> > In my experience, IGMP snooping will not work unless the layer 2 switch> > snoops the client report. Meaning you have to have clients who want to join> > a group sending IGMP join reports that the switch can snoop. This usually> > requires that something be performing the quierier process, ie a multicast> > enabled router. 224.0.0.2 is all routers MC address. Enable PIM on the> > router and see if IGMP snooping works.> > ________________________________> > From: extreme-nsp-bounces@puck.nether.net> > [extreme-nsp-bounces@puck.nether.net] On Behalf Of Fabian> > [fabian.extr@gmail.com]> > Sent: Tuesday, September 16, 2008 7:28 AM> > To: extreme-nsp@puck.nether.net> > Subject: Re: [e-nsp] Summit450X - strange IGMP-snooping on port connected to> > Linux server?> >> > Hi Frederik,> >> >> >> > If your server is considered as a Router, that means that it is advertising> > on multicast address : 224.0.0.2> >> >> >> > So do a TCPDUMP to check if so and verify if you don't have a router feature> > enabled.> >> >> >> > Regards, Fabian.> >> >> >> > From: extreme-nsp-bounces@puck.nether.net> > [mailto:extreme-nsp-bounces@puck.nether.net] On Behalf Of F J> > Sent: mardi 16 septembre 2008 12:26> > To: extreme-nsp@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@gmail.com> > To: ripprapp@hotmail.com> > Subject: Re: [e-nsp] Summit450X - strange IGMP-snooping on port connected to> > Linux server?> > CC: extreme-nsp@puck.nether.net> >> > Hello FJ,> >> > On Tue, Sep 16, 2008 at 8:21 AM, F J <ripprapp@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!> >> > ________________________________> >> > Explore the seven wonders of the world Learn more!> >> > _______________________________________________> > extreme-nsp mailing list> > extreme-nsp@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/> > ----------------------------------------------> >> >> >> > ________________________________> >> > Connect to the next generation of MSN Messenger Get it now!> >> > ________________________________> > Note: This message and any attachments is intended solely for the use of the> > individual or entity to which it is addressed and may contain information> > that is non-public, proprietary, legally privileged, confidential, and/or> > exempt from disclosure. If you are not the intended recipient, you are> > hereby notified that any use, dissemination, distribution, or copying of> > this communication is strictly prohibited. If you have received this> > communication in error, please notify the original sender immediately by> > telephone or return email and destroy or delete this message along with any> > attachments immediately.> >> > ________________________________> > Invite your mail contacts to join your friends list with Windows Live> > Spaces. It's easy! Try it!> > _______________________________________________> > extreme-nsp mailing list> > extreme-nsp@puck.nether.net> > https://puck.nether.net/mailman/listinfo/extreme-nsp> >> _______________________________________________> extreme-nsp mailing list> extreme-nsp@puck.nether.net> https://puck.nether.net/mailman/listinfo/extreme-nsp
_________________________________________________________________
Invite your mail contacts to join your friends list with Windows Live Spaces. It's easy!
http://spaces.live.com/spacesapi.aspx?wx_action=create&wx_url=/friends.aspx&mkt=en-us