Multicast mtrace !

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Hi Guys,
Could u pls tell me the meaning of "none" in multicast mtrace?
R6-Client#mtrace 10.0.12.1
Type escape sequence to abort.
Mtrace from 10.0.12.1 to 10.0.56.6 via RPF
From source (?) to destination (?)
Querying full reverse path...  
 0  10.0.56.6
-1  10.0.56.6 None  [10.0.12.0/24]
-2  10.0.56.5 None  [10.0.12.0/24]
-3  10.0.45.4 None  [10.0.12.0/24]
-4  10.0.24.2 PIM  [10.0.12.0/24]
-5  10.0.12.1

I have already enable ip multicast-routing on global, PIM-SM on interface.
Thanks so much !
 Duong Vu.

Re: Multicast mtrace !
Hello D??ng,

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 Do you see the PIM neighbours? It seems that field is meant to be the
protocol in use on those links.

 The documentations seems uniformly awful but perhaps a little wireshark and
reference to
http://www.ietf.org/proceedings/48/I-D/idmr-traceroute-ipm-07.txt which
seems to be the genesis for mtrace could be revealing.

--  
Rgds,
Martin

Re: Multicast mtrace !
Hi Martin,
Many many thanks for your reply. I use Iou Web to simulate this lab and I t
hink problem here is iou web. When I use GNS3, the mtrace output is normal.
again, thank you so much
--------------
Duong Vu

On Thursday, September 11, 2014 4:52:30 PM UTC+7, Martin Gallagher wrote:
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ce.
and

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