Layer 2 Filtering for Routing

From: ke Hei (heike9@xxxxxxxxx)
Date: Fri Jul 28 2000 - 10:09:49 GMT-3

   
Here is the situation:

  e0: R1 s0: ----- s0: R2 e0:
 running any IP routing protocol (ospf, rip ...)
having full ip connection. How can I block the routing
updates sent from R2 by configuring a Mac address
level filter on R1 only -- no layer 3 filtering are
allowed ?

I had tried by using following commands on R1:
 !
 int s0
    ip add ...
    Access-expression IN ( Dmac(700)|Smac(700))
 !
  Access-list 700 permit <mac_add_of_R2_e0>
 !
It seems to be not working and both routers still be
able pinging each other.

I couldn't find more info. on layer 2 address
filtering
from cisco CD and web.

Thanks in advance for any hints.

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