>Hi Jason:
>
>When there is a change a router forwards the LSU to the DR of the 
>multiaccess network using the OSPF multicast 224.0.0.6. The DR 
>acknowledges the receipt of the change and floods the LSU to the 
>others int the multiaccess network using the OSPF multicast address 
>224.0.0.5.
>
>Hope this helps,
>
>Carlos Manjarres
>CCNA


Yes, this is true, but not the whole story.  As a study topic, why 
doesn't the reporting router send to the unicast address of the DR? 
Multicasts imply that more than one destination will listen.  Who 
else would be interested in this update?  Why?

>
>
>
>>From: "Jason" <[EMAIL PROTECTED]>
>>Reply-To: "Jason" <[EMAIL PROTECTED]>
>>To: [EMAIL PROTECTED]
>>Subject: ospf lsu using 224.0.0.5 and 224.0.0.6 ?
>>Date: Fri, 18 Aug 2000 15:12:07 +0800
>>
>>hi all,
>>
>>anyone knows why during lsu (link state update) of ospf why the router uses
>>ip addr 224.0.0.6, I know this is a multi-cast address but in particular
>>224.0.0.6.
>>
>>
>>thanks
>>
>>Jason

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