From: Atif Awan (atifawan@xxxxxxxxxxx)
Date: Thu Sep 21 2000 - 06:02:25 GMT-3
This is probably to take into consideration the RII which is the first bit
in the source MAC address in Token Ring environments. If you use 0000
instead of 8000 you will not allow packets with a RIF to pass through
consequently preventing any communication to take place.
Regards
Atif
>From: "yujianchun" <stiff.yu@datacraft-asia.com>
>Reply-To: "yujianchun" <stiff.yu@datacraft-asia.com>
>To: <ccielab@groupstudy.com>
>Subject: about MAC Address filter
>Date: Thu, 21 Sep 2000 14:48:05 +0800
>
>hi, all
>
>I find a example is below:
>We "remote source route bridge" to a customer network to provide
>connectivity between our HOST TIC and their Gateway
>PC. Here is the basic setup:
>
> ======== ========
> Token Ring | | | | Token Ring
> ( #3225 )----| AGS+ |----56KB Serial----| 3000 |----( #513 )
> HOST TIC | | Link | | Gateway PC
> 4000.0000.0001 ======== ======== 4000.3174.0001
>
>We are preventing unnecessary broadcast traffic from entering our network
>by
>using the following RSRB filter on the 3000:
>
> interface TokenRing 0
> source-bridge input-address-list 702
>
> access-list 702 permit 4000.3174.0001 8000.0000.0000
>
>I have a question:
>
>why canot I use command ' access-list 702 permit 4000.3174.0001
>0000.0000.0000'
>
>pls tell me answer.
>
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