All things related to multicast

[Simon Leinen <>]

>>>>> "ac" == Alan Crosswell 
>>>>> <>
>>>>>  writes:
> Yes, that's right, UMD's VOIP gateway has registered with my gatekeeper:-)

Remark for those who don't know it - gatekeeper.mcast.net [224.0.1.41]
is the IANA-assigned multicast address for H.323 gatekeeper discovery.
Btw. just yesterday I verified that this works fine with Sun's free
(beer) SunForum 3.2 H.323 client.  Very handy.

If you have an H.323 gatekeeper which is multicast-reachable, then you
should administratively limit routing of 224.0.1.41 to the domain that
you want to provide H.323 gatekeeper service to.

Bill, maybe this should go into the BCP I-D.
Toerless, maybe this should go into your MSDP SA filter suggestions.
-- 
Simon.

> gatekeeper#sho ip igmp groups 
> IGMP Connected Group Membership
> Group Address    Interface                Uptime    Expires   Last Reporter
> 224.0.1.41       FastEthernet0/0          04:11:24  stopped   128.59.31.68
> gatekeeper#sho gatekeeper endpoints 
>                     GATEKEEPER ENDPOINT REGISTRATION
>                     ================================
> CallSignalAddr  Port  RASSignalAddr   Port  Zone Name         Type    Flags 
> --------------- ----- --------------- ----- ---------         ----    ----- 
> 128.8.97.5      1720  128.8.97.5      51685 Columbia_Universi VOIP-GW  
>     H323-ID: ciscoh323
> 128.59.39.163   1720  128.59.39.163   1168  Columbia_Universi TERM     
>     E164-ID: 15883290917514
>     H323-ID: alan
> 128.59.31.200   1720  128.59.31.200   2053  Columbia_Universi TERM     
>     E164-ID: 15883290917519
>     H323-ID: AcIS Polycom Watson 802
> 128.59.31.214   1720  128.59.31.214   2053  Columbia_Universi TERM     
>     E164-ID: 17520
>     H323-ID: 17520 AcIS 1
> Total number of active registrations = 4

> :-)
> /a




-- 
Simon Leinen                                   

SWITCH                             http://www.switch.ch/misc/leinen/

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