At 09:40 AM 8/18/00, Howard C. Berkowitz wrote:
>>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?
The backup designated router (BDR) is interested also, in case it has to
take over for the DR?
>>>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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