Subject: [pim] Very simple pimd multicast configuration

From: Famille Béasse <[email-masked]>
Date: Sun, 9 May 2004 17:10:49 +0200

Hi,

Can someone can help-me to make a very simple multicast configuration.

Here is my test configuration  (With just one Router):

Server ----------------Multicast Router ----------------------Client
[192.168.1.1        192.168.1.250]   [192.168.0.250         192.168.0.1]

Netmask is 255.255.255.0
/proc/sys/net/ipv4/ip_forward is set to1
Router is Linux Fedora Core 1 With Pimd-2.1.0-alpha29-18
IP_Multicast PIM-SM etc is activate by default in kernel.

My router is ok for unicast. I can communicate from server to client.

But When i want to make Multicast from Server to Client, traffic is not
forward by the router.When i do a "ping -t 5 224.0.0.1" on Linux Client,
packets are not forwards to Linux Server and vice-versa.

What tools can i use to see if configuration is OK ?
What's about pimd.conf configuration file ?

When i do a "ip mroute show" there is nothing to see is it normal ?

Do you have any idea.
Thanks for your help.

Best regards

Christophe Béasse
France

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From: "Ganapathasaa" <[email-masked]>
Date: Tue, 11 May 2004 16:34:18 +0900

Hi,
 
Even though it is not possible to ensure "end to end multicast' connectivity using ping command, however you can check the multicast connectivity seperately(i.e., from server to Multicast router and then from router client) in your setup, using the ping command itself.
 
Try pinging 224.0.0.2(all routers), 224.0.0.13(all pim routers) from server/client to router, the router should relpy as you are running PIM. And also try "ping 224.0.0.1(all systems)" from router to server and client. But remember to check the default unicast route on the system from where you are generating the ping, ping 224.x.x.x packets will be sent only on default link as there will be no matching entry for 224.x.x.x in unicast routing table.
 
cheers,
Ganapath

	-----Original Message----- 
	From: Prashant Jhingran([email-masked]) [mailto:[email-masked]] 
	Sent: Tue 5/11/2004 1:14 PM 
	To: [email-masked]; [email-masked] 
	Cc: [email-masked] 
	Subject: RE: [pim] Very simple pimd multicast configuration

	hi, 
	    Also not very sure how Ping can work with a multicast address , because 
	multicast fwd entries will be created only on request in case of PIM-SM. 
	You may however try a utility called "mping" instead of normal "ping". 

	regards, 
	Prashant 

	-----Original Message----- 
	From: [email-masked] [mailto:[email-masked]]On Behalf Of 
	[email-masked] 
	Sent: Tuesday, May 11, 2004 7:22 AM 
	To: Famille B閍sse .huawei.com 
	Cc: [email-masked] 
	Subject: Re: [pim] Very simple pimd multicast configuration 

	First of all, you're using group addr 224.0.0.1 for testing. 
	It is a very special group, which, along with all of 224.0.0.0/24 
	will not be forwarded by any multicast router. 
	It's reserved for link-local multicast, 
	for protocol hellos and such, that are to be sent with TTL=1. 

	However, I can't tell what else is wrong, if you're using other 
	valid multicast data groups too. At least, the first thought is 
	to point out the invalid group usage above. 

	- Paras. 

	> Christophe B閍sse

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From: "Ganapathasaa" <[email-masked]>
Date: Tue, 11 May 2004 16:34:18 +0900

Hi,

 
cheers,
Ganapath

	-----Original Message----- 
	From: Prashant Jhingran([email-masked]) [mailto:[email-masked]] 
	Sent: Tue 5/11/2004 1:14 PM 
	To: [email-masked]; [email-masked] 
	Cc: [email-masked] 
	Subject: RE: [pim] Very simple pimd multicast configuration

	hi, 

	regards, 
	Prashant 

	-----Original Message----- 
	From: [email-masked] [mailto:[email-masked]]On Behalf Of 
	[email-masked] 
	Sent: Tuesday, May 11, 2004 7:22 AM 
	To: Famille B閍sse .huawei.com 
	Cc: [email-masked] 
	Subject: Re: [pim] Very simple pimd multicast configuration 

	- Paras.

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From: "wlq" <[email-masked]>
Date: Thu, 13 May 2004 22:29:11 +0800

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From: "wlq" <[email-masked]>
Date: Thu, 13 May 2004 22:29:11 +0800