[cisco-voip] MoH on CME & Internal Network

[Sean Walberg]

Instead of disabling IGMP snooping, try enabling PIM on the routers. There's
also the "ip gmp snooping querier" command on 3750s that will keep the
queries going and therefore the snooping tables primed.

I've run into enough problems caused by the lack of snooping (either because
it was turned off, or the switch didn't support it) to last a while. IGMP
snooping is there for a very good reason.

Sean


On Thu, Oct 1, 2009 at 2:58 PM, Nick Matthews <matthnick at gmail.com> wrote:

> Some common things to get multicast MoH working:  Enabling multicast
> routing on any l3 points between the CME and phones, and disabling igmp
> snooping - 'no ip igmp snooping'.
>
>
> -nick
>
> On Thu, Oct 1, 2009 at 3:34 PM, Chris Ward (chrward) <chrward at cisco.com>wrote:
>
>>  The fact that they quit beeping is actually a positive sign as this
>> means the MOH stream is probably being allocated, just not making it to the
>> phone.
>>
>>
>>
>> Can you give us the logical topology between the CME and the phones? Is
>> the GigE 0/0 connected to the subnet that the phones are on or are there
>> other hops?
>>
>>
>>
>> Also, on the “multicast moh 239.1.1.1 port 2000” command you should try
>> to specify a source address of the GigE interface and see if that helps.
>>
>>
>>
>> -Chris
>>
>>
>>
>> *From:* cisco-voip-bounces at puck.nether.net [mailto:
>> cisco-voip-bounces at puck.nether.net] *On Behalf Of *Kim, Hyoun S
>> *Sent:* Thursday, October 01, 2009 3:30 PM
>> *To:* cisco-voip at puck.nether.net
>> *Subject:* [cisco-voip] MoH on CME & Internal Network
>>
>>
>>
>> I’m running CME 7.0 and have a question on MoH.
>>
>>
>>
>> I’ve successfully changed my music-on-hold for my VoIP system.  However,
>> my manager has told me he wants to play the music-on-hold file for internal
>> calls as well.  Previously, the phone would just beep to remind you that you
>> have a call on hold (for internal calls).  For outside calls, the MoH plays
>> fine.
>>
>>
>>
>> I’ve read that in order to play MoH for the internal network, you have to
>> do it through multicast.  So on my router, I did the following:
>>
>> ----------------------
>>
>> ip multicast-routing
>>
>> !
>>
>> Interface GigabitEthernet0/0
>>
>> ip pim dense-mode (also did sparse-dense-mode)
>>
>> !
>>
>> ccm-manager music-on-hold
>>
>> !
>>
>> telephony-sevice
>>
>> moh On-Hold-Rev2.wav
>>
>> multicast moh 239.1.1.1 port 2000 (I’ve also tried 239.1.1.3, 5, etc)
>>
>> ----------------------
>>
>>
>>
>> Things to note:  All entries in ephone-dn have “multicast-moh” enabled.
>>
>>
>>
>> What am I missing here?  When I make the above changes, our phones quit
>> “beeping” when internal calls are placed on hold.  When I remove the
>> ‘multicast moh 239.1.1.1 port 2000’ line, our phones beep again internally
>> when on hold.
>>
>>
>>
>> Any help would be appreciated.
>>
>>
>>
>> -Hyoun
>>
>>
>>
>>
>>
>> [image: 2C_CharLogo_Tag_CMYK]
>>  ------------------------------
>>
>> *Hyoun Kim** •** *Network Administrator I – East Division
>>
>> 640 Broadmor Blvd *• *Suite 80 *• *Murfreesboro, TN 37129
>>
>> ' 615.217.6245 *• *' 859.312.6941 *•* 7 615.217.6255 *• **
>> Hyoun.Kim at chartercom.com
>>
>>
>>
>>
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-- 
Sean Walberg <sean at ertw.com>    http://ertw.com/
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