From: Bhuvanesh Rajput (ashu2084@gmail.com)
Date: Sat Mar 14 2009 - 15:04:25 ARST
Hey dude,
Howz ur preparation..?
Bob is 110% accurate.....................
Cheers!
Bhuvanesh
On Sat, Mar 14, 2009 at 3:22 AM, Bob Sinclair <bob@bobsinclair.net> wrote:
> Hello Raghav,
>
> Here is the rule I would recommend for broadcast keywords on static Frame
> Relay maps. Assuming that you need to send multicasts or broadcasts on a
> PVC, then you need one broadcast keyword per PVC, per protocol.
>
> So if you have 2 unicast IPv4 static maps to PVC 102, then at least one of
> those maps needs to have the broadcast keyword. It makes no difference which
> unicast map has the broadcast keyword, self, hub or far spoke. It simply
> does not matter.
>
> If you also have IPv6 static maps on an interface, then at least one of
> those will need a broadcast keyword, if you want to send multicast packets
> on the pvc. It makes no difference which unicast static map has the
> broadcast keyword: it could be a routable address mapping or a link-local
> address mapping, to the hub, or to the spoke.
>
> In other words: one broadcast keyword per PVC, per protocol. WHICH unicast
> map makes absolutely no difference!
>
> As you suggest, having more than one broadcast keyword per pvc, per protocol
> could waste bandwidth by duplicating broadcast or multicast packets.
>
> HTH,
>
> -Bob Sinclair CCIE 10427 CCSI 30427
> www.netmasterclass.net
>
>> -----Original Message-----
>> From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
>> Raghav Bhargava
>> Sent: Friday, March 13, 2009 5:31 PM
>> To: Cisco certification
>> Subject: Confusion regarding FR
>>
>> Hi Experts,
>>
>> I have some confusion in FR regarding the broadcast keyword. Here is
>> what i
>> understand . Please correct me wherever I am wrong.
>>
>> 1. FR multipoint between Hub and spokes ( *Serial Interface* )
>>
>> ----> When doing this we use the keyword broadcast on all i.e- hub as
>> well
>> as spokes as long as spokes are not mapping to each one of them. Also
>> this
>> configuration is done on the serial Interface not the sub interface
>> Now when we have to map spokes to each other then we don't use
>> broadcast as
>> it will send duplicate routes to the hub.
>>
>> 2. FR multipoint between Hub and spokes ( *Serial sub-Interface* )
>>
>> -----> When we configure a sub-interface with multipoint on the hub
>> side for
>> each of the spoke , now do we use the keyword broadcast ???? yes or
>> no..I
>> really don know
>>
>> But if someone can shed some light that will be great...
>>
>>
>> --
>> Warm Regards
>> Raghav
>>
>>
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>>
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