When it comes to multicast you should be familiar with MRM... I usually only
"join" a group to test also but I think the blue-print mentions MRM! Also,
another cool way to test is use "mstat" and it will tell you where it is broken
along the path! It even gives you a little diagram!!
This is when it is broken!
R5#mstat 172.16.120.1
Type escape sequence to abort.
Mtrace from 172.16.120.1 to 172.16.25.5 via RPF
From source (?) to destination (?)
Waiting to accumulate statistics.....
*Mar 1 03:37:06.903: %MROUTE-3-NO_PIM_NBR: There is no PIM neighbor on this
IDB: FastEthernet0/0.25 -Process= "IGMP Input", ipl= 0, pid= 269.
Results after 10 seconds:
Source Response Dest Packet Statistics For Only For Traffic
172.16.120.1 172.16.25.5 All Multicast Traffic From 172.16.120.1
| __/ rtt 7 ms Lost/Sent = Pct Rate To 0.0.0.0
v / hop 7 ms --------------------- --------------------
172.16.120.1
172.16.23.20 ?
| ^ ttl 0
v | hop -2 s 0/0 = --% 0 pps 0/0 = --% 0 pps
172.16.23.2
172.16.25.2 ? Multicast disabled
| ^ ttl 1
v | hop 2723 ms 0/0 = --% 0 pps 0/0 = --% 0 pps
172.16.25.5 ?
| \__ ttl 2
v \ hop 0 ms 0 0 pps 0 0 pps
172.16.25.5 172.16.25.5
Receiver Query Source
On May 27, 2010, at 3:20 PM, Jonathan Fernatt wrote:
> As far as multicast, typically I'll just join the multicast group on an
> interface on the router somewhere to verify. If you ping the group from
> wherever you want to simulate the source from, you should get a response from
> any interfaces that you've joined to the group. "ip igmp join-group
> 239.0.0.1" for example
>
> For QoS, to be honest, other than verifying configs, I don't do all that
> much. They're usually pretty straight forward. There are some traffic
> generators out there. I can't remember the names off the top of my head but I
> have them at home. I'll find the names and send to you later.
>
> Jon
>
> On Tue, May 25, 2010 at 12:41 PM, Áki Hermann Barkarson <[email protected]> wrote:
> Hi guys.
>
> I'm new to the IP Expert study program, starting the blended solution studies
> this week(passed my written 350-001 this morning, yay :o).
>
> Seems this list is used for anything and everything so i have a study related
> question.
>
> I plan on generating traffic other then icmp or tcp connection verification
> with telnet, especially for QoS and multicast. I'd love to get my hands on a
> lightweight QEMU bootable image with pre-compiled tools for this(like iPerf,
> nmap etc), does anyone know of a distribution like this? Or maybe a
> lightweight image that has capability to compile stuff, i have tried some of
> the one's available and had little luck getting tools properly compiled.
>
> And if this is maybe the wrong approach, what are you guys using to verify
> technologies like QoS or multicast?
>
>
> Áki Hermann Barkarson
> Sérfræðingur | Netbúnaðarhópur
> CCNP/CCIP/CCDP
>
> EJS ehf.
> Grensásvegi 8 - 108 Reykjavík
> Sími : 5633124
> GSM : 6643124
>
> www.ejs.is
> _______________________________________________
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> visit www.ipexpert.com
>
> _______________________________________________
> For more information regarding industry leading CCIE Lab training, please
> visit www.ipexpert.com
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