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<DIV><FONT face=Arial size=2><SPAN class=272371505-23112007>Hi
There,</SPAN></FONT></DIV>
<DIV><FONT face=Arial size=2><SPAN class=272371505-23112007><BR>We are using
CallManager 5.1 and I believe I've set up the network to be multicast ready, but
I don't know how to confirm that multicast is working properly for Music On
Hold which is currently being streamed using multicast datagrams from our two
CallManager servers.</SPAN></FONT></DIV>
<DIV><FONT face=Arial size=2><SPAN
class=272371505-23112007></SPAN></FONT> </DIV>
<DIV><FONT face=Arial size=2><SPAN class=272371505-23112007>Here's a brief
overview of the current set up.</SPAN></FONT></DIV>
<DIV><FONT face=Arial size=2><SPAN
class=272371505-23112007></SPAN></FONT> </DIV>
<DIV><FONT face=Arial size=2><SPAN class=272371505-23112007>We have all our
Cisco IP phones (7961's) set up on vlan 40.</SPAN></FONT></DIV>
<DIV><FONT face=Arial size=2><SPAN class=272371505-23112007>There's only one
core router involved with this set up and various PoE
switches.</SPAN></FONT></DIV>
<DIV><FONT face=Arial size=2><SPAN
class=272371505-23112007></SPAN></FONT> </DIV>
<DIV><FONT face=Arial size=2><SPAN
class=272371505-23112007>---------------------------------------------------------<FONT
face=Arial size=2><SPAN
class=272371505-23112007>---------------------------------------------------------</SPAN></FONT></SPAN></FONT></DIV>
<DIV><FONT face=Arial size=2><SPAN class=272371505-23112007>Core Router (cisco
7206VXR (NPE300))<BR><SPAN class=272371505-23112007>
<DIV><FONT face=Arial size=2><SPAN
class=272371505-23112007>---------------------------------------------------------<FONT
face=Arial size=2><SPAN
class=272371505-23112007>---------------------------------------------------------<BR></SPAN></FONT></SPAN></FONT></DIV></SPAN></SPAN></FONT><FONT
face=Arial size=2><SPAN class=272371505-23112007></SPAN></FONT></DIV>
<DIV><FONT face=Arial size=2><SPAN class=272371505-23112007>* I've enabled
multicast on this router and set up PIM on the respective
sub-interface.</SPAN></FONT></DIV>
<DIV><FONT face=Arial size=2><SPAN
class=272371505-23112007></SPAN></FONT> </DIV>
<DIV><FONT face=Arial size=2><SPAN class=272371505-23112007>ip
multicast-routing</SPAN></FONT></DIV>
<DIV><FONT face=Arial size=2><SPAN
class=272371505-23112007></SPAN></FONT> </DIV>
<DIV><FONT face=Arial size=2><SPAN class=272371505-23112007>interface
FastEthernet0/0.40<BR> description Cisco IP Phone
System<BR> encapsulation dot1Q 40<BR> ip address 172.16.55.1
255.255.255.0<BR> ip pim dense-mode<BR></SPAN></FONT></DIV>
<DIV><FONT face=Arial size=2><SPAN class=272371505-23112007><FONT face=Arial
size=2><SPAN class=272371505-23112007>
<DIV><FONT face=Arial size=2><SPAN
class=272371505-23112007>---------------------------------------------------------<FONT
face=Arial size=2><SPAN
class=272371505-23112007>---------------------------------------------------------</SPAN></FONT></SPAN></FONT></DIV></SPAN></FONT></SPAN></FONT><FONT
face=Arial size=2><SPAN class=272371505-23112007><SPAN
class=272371505-23112007>switch1-voip<BR><FONT face=Arial size=2><SPAN
class=272371505-23112007>
<DIV><FONT face=Arial size=2><SPAN
class=272371505-23112007>---------------------------------------------------------<FONT
face=Arial size=2><SPAN
class=272371505-23112007>---------------------------------------------------------<BR></SPAN></FONT></SPAN></FONT></DIV></SPAN></FONT><FONT
face=Arial size=2><SPAN class=272371505-23112007></SPAN></FONT></DIV>
<DIV>
<DIV><FONT face=Arial size=2><SPAN class=272371505-23112007>
<DIV><FONT face=Arial size=2><SPAN class=272371505-23112007>* The switches all
are have igmp snooping enabled as seen below for vlan40.</SPAN></FONT></DIV>
<DIV><FONT face=Arial size=2><SPAN
class=272371505-23112007></SPAN></FONT> </DIV></SPAN></FONT></DIV></SPAN></SPAN></FONT></DIV>
<DIV><FONT face=Arial size=2><SPAN class=272371505-23112007>switch1-voip#sh ip
igmp snooping vlan 40</SPAN></FONT></DIV>
<DIV><FONT face=Arial size=2><SPAN class=272371505-23112007><BR>Global IGMP
Snooping configuration:<BR>-------------------------------------------<BR>IGMP
snooping
: Enabled<BR>IGMPv3 snooping (minimal) : Enabled<BR>Report
suppression :
Enabled<BR>TCN solicit
query :
Disabled<BR>TCN flood query count :
2<BR>Robustness variable :
2<BR>Last member query count : 2<BR>Last member
query interval : 1000</SPAN></FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2><SPAN class=272371505-23112007>Vlan
40:<BR>--------<BR>IGMP
snooping
: Enabled<BR>IGMPv2 immediate
leave
: Disabled<BR>Multicast router learning mode :
pim-dvmrp<BR>CGMP interoperability
mode :
IGMP_ONLY<BR>Robustness
variable
: 2<BR>Last member query
count :
2<BR>Last member query
interval :
1000<BR></SPAN></FONT></DIV>
<DIV><FONT face=Arial size=2><SPAN class=272371505-23112007><SPAN
class=272371505-23112007>---------------------------------------------------------<FONT
face=Arial size=2><SPAN
class=272371505-23112007>---------------------------------------------------------</SPAN></FONT></SPAN></DIV></SPAN></FONT>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><SPAN class=272371505-23112007><FONT face=Arial size=2>I can see that the
multicast group exists on the core router.</FONT></SPAN></DIV>
<DIV><SPAN class=272371505-23112007><FONT face=Arial size=2>172.16.55.5 =
callmanager1 </FONT></SPAN></DIV>
<DIV><SPAN class=272371505-23112007><FONT face=Arial size=2>172.16.55.6 =
callmanager2</FONT></SPAN></DIV>
<DIV><SPAN class=272371505-23112007><FONT face=Arial
size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=272371505-23112007><FONT face=Arial size=2>core-routerr#sh ip
mroute<BR>IP Multicast Routing Table<BR>Flags: D - Dense, S - Sparse, B - Bidir
Group, s - SSM Group, C - Connected,<BR> L -
Local, P - Pruned, R - RP-bit set, F - Register
flag,<BR> T - SPT-bit set, J - Join SPT, M -
MSDP created entry,<BR> X - Proxy Join Timer
Running, A - Candidate for MSDP
Advertisement,<BR> U - URD, I - Received
Source Specific Host Report<BR>Outgoing interface flags: H - Hardware
switched<BR>Timers: Uptime/Expires<BR>Interface state: Interface, Next-Hop or
VCD, State/Mode<BR></FONT></SPAN></DIV>
<DIV><SPAN class=272371505-23112007><FONT face=Arial size=2>(*, 239.1.2.1),
1d03h/00:02:59, RP 0.0.0.0, flags: DP<BR> Incoming interface: Null, RPF
nbr 0.0.0.0<BR> Outgoing interface list: Null</FONT></SPAN></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><SPAN class=272371505-23112007><FONT face=Arial size=2>(172.16.55.6,
239.1.2.1), 00:01:10/00:01:49, flags: PT<BR> Incoming interface:
FastEthernet0/0.40, RPF nbr 0.0.0.0<BR> Outgoing interface list:
Null</FONT></SPAN></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><SPAN class=272371505-23112007><FONT face=Arial size=2>(*, 239.1.1.1),
1d03h/00:02:59, RP 0.0.0.0, flags: DP<BR> Incoming interface: Null, RPF
nbr 0.0.0.0<BR> Outgoing interface list: Null</FONT></SPAN></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><SPAN class=272371505-23112007><FONT face=Arial size=2>(172.16.55.5,
239.1.1.1), 00:01:06/00:01:53, flags: PT<BR> Incoming interface:
FastEthernet0/0.40, RPF nbr 0.0.0.0<BR> Outgoing interface list:
Null<BR></FONT></SPAN></DIV>
<DIV><SPAN class=272371505-23112007><FONT face=Arial size=2>But I don't
understand why no hosts (ip phones) are joining this multicast group (0 joins, 0
leaves)</FONT></SPAN></DIV>
<DIV><SPAN class=272371505-23112007><FONT face=Arial
size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=272371505-23112007><FONT face=Arial size=2>core-routerr#sh ip
igmp interface fa0/0.40<BR>FastEthernet0/0.40 is up, line protocol is
up<BR> Internet address is 172.16.55.1/24<BR> IGMP is enabled on
interface<BR> Current IGMP host version is 2<BR> Current IGMP router
version is 2<BR> IGMP query interval is 60 seconds<BR> IGMP querier
timeout is 120 seconds<BR> IGMP max query response time is 10
seconds<BR> Last member query count is 2<BR> Last member query
response interval is 1000 ms<BR> Inbound IGMP access group is not
set<BR> IGMP activity: 0 joins, 0 leaves<BR> Multicast routing is
enabled on interface<BR> Multicast TTL threshold is 0<BR> Multicast
designated router (DR) is 172.16.55.1 (this system)<BR> IGMP querying
router is 172.16.9.50<BR> No multicast groups joined by this
system<BR></FONT></SPAN></DIV>
<DIV><FONT face=Arial><FONT size=2><SPAN class=272371505-23112007>I've followed
this troubleshooting article and everything appears correct within the switch
network:</SPAN></FONT></FONT></DIV>
<DIV><FONT face=Arial><FONT size=2><SPAN
class=272371505-23112007></SPAN></FONT></FONT> </DIV>
<DIV><FONT face=Arial><FONT size=2><SPAN class=272371505-23112007><A
href="http://www.cisco.com/en/US/products/hw/switches/ps708/products_tech_note09186a008059a9df.shtml">http://www.cisco.com/en/US/products/hw/switches/ps708/products_tech_note09186a008059a9df.shtml</A></SPAN></FONT></FONT></DIV>
<DIV><FONT face=Arial><FONT size=2><SPAN
class=272371505-23112007></SPAN></FONT></FONT> </DIV>
<DIV><FONT face=Arial><FONT size=2><SPAN class=272371505-23112007>This CCIE also
has a simple set up which I followed but can't confirm if multicast is properly
working bc I don't see the join counter increasing on the sub
interface.</SPAN></FONT></FONT></DIV>
<DIV><FONT face=Arial><FONT size=2><SPAN
class=272371505-23112007></SPAN></FONT></FONT> </DIV>
<DIV><FONT face=Arial><FONT size=2><SPAN class=272371505-23112007><A
href="http://cciev.wordpress.com/2006/06/17/moh-settings-for-multicast/">http://cciev.wordpress.com/2006/06/17/moh-settings-for-multicast/</A></SPAN></FONT></FONT></DIV>
<DIV><FONT face=Arial><FONT size=2><SPAN
class=272371505-23112007></SPAN></FONT></FONT> </DIV>
<DIV><FONT face=Arial><FONT size=2><SPAN class=272371505-23112007>
<DIV></SPAN></FONT></FONT><FONT face=Arial><FONT size=2><SPAN
class=272371505-23112007>Strange enough, <SPAN
class=272371505-23112007><FONT face=Arial size=2>MOH is still working eventhough
multicast doesn't appear to be working. Why would this be the
case?</FONT></SPAN></SPAN></FONT></FONT></DIV>
<DIV><FONT face=Arial><FONT size=2><SPAN class=272371505-23112007><SPAN
class=272371505-23112007></SPAN></SPAN></FONT></FONT> </DIV>
<DIV><FONT face=Arial><FONT size=2><SPAN class=272371505-23112007><SPAN
class=272371505-23112007>
<DIV><SPAN class=272371505-23112007><FONT face=Arial size=2>How do I confirm
multicast is properly working with CallManager's MOH within the
network?</FONT></SPAN></DIV></SPAN></SPAN></FONT></FONT></DIV></DIV>
<DIV><FONT face=Arial><FONT size=2><SPAN class=272371505-23112007><SPAN
class=272371505-23112007></SPAN></SPAN></FONT></FONT> </DIV>
<DIV><FONT face=Arial><FONT size=2><SPAN class=272371505-23112007><SPAN
class=272371505-23112007>Any help or page reference would be greatly
appreciated.</SPAN></SPAN></FONT></FONT></DIV>
<DIV><FONT face=Arial><FONT size=2><SPAN class=272371505-23112007></SPAN><SPAN
class=272371505-23112007></SPAN></FONT></FONT> </DIV>
<DIV><FONT face=Arial size=2>--</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>Regards,</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>Andy</FONT></DIV></BODY><!--[object_id=#staff.netspace.net.au#]--><P align=left><FONT face=Arial size=1>This email and any files transmitted with it are confidential and intended solely for the use of the individual or entity to whom they are addressed. Please notify the sender immediately by email if you have received this email by mistake and delete this email from your system. Please note that any views or opinions presented in this email are solely those of the author and do not necessarily represent those of the organisation. Finally, the recipient should check this email and any attachments for the presence of viruses. The organisation accepts no liability for any damage caused by any virus transmitted by this email.</FONT></P></HTML>