[Xorp-users] Question regarding PIM-SM

[Pavlin Radoslavov]

Please send your XORP configuration (on the RUT).

Pavlin

P.S. Yes, XORP supports the SPT switch.


Jigar <jjajal at gmail.com> wrote:

> Hi all,
> 
> I want to test the following scenario given in RFC-4601 (PIM-SM) in
> section 3.3 ( Phase Three: Shortest Path Tree ):
> ##############################################################
> To obtain lower latencies or more efficient bandwidth utilization,
> a router on the receiver's LAN, typically the DR, may *optionally* initiate
> a transfer from the shared tree to a source specific shortest path tree (SPT).
> To do this, it issues an (S,G) Join towards S.
> ##############################################################
> 
> I have tested this scenario with XORP and I found that XORP does not initiate
> this step.
> 
> To test this particular initiation, I have following setup:
> Please find the setup which is attached.
> 
> Test Setup details:
> - XORP PIM-SM is enabled on the RUT. The RP is statically configured
> for 224.0.6.130.
> - The RUT is the DR for network 0.
> - RUT has a static route to the RP through TR2.
> - The RUT has a static route to the source through TR1.
> 
> Steps followed:
> 1. On networks 2, TR1 and TR2 transmit Hello messages.
> 2. On network 0, transmit IGMP reports for 224.0.6.130.
> 3. On network 1, the RP will transmit the data packets.
> 4. The multicast destination address of the data is 224.0.6.130.
> 5. TR2 will forward the data packets on to network 2.
> 
> Expectations:
> - As expected, RUT forwards multicast data packets from network 2 to network 0.
> - As mentioned in statements in RFC, RUT may issue an (S,G) Join towards
> source.
> But I did not find any (S,G) Join on network 2.
> 
> I want to know whether XORP supports the feature of creating Shortest Path Tree
> or not. If XORP initiates this step then please tell me where I am going wrong.
> 
> Regards,
> Jigar Jajal
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