From: mahmoud genidy (ccie.mahmoud@gmail.com)
Date: Mon Dec 29 2008 - 03:06:24 ARST
Hi team,
Filtering for MAC addresses with FALLBACK Bridging does not work with me.
I have SW1 connected with R1 and R2. I like to disable forwarding of dynamic
learned MAC addresses. Also I like to statically enable FORWARD and DISCARD
of specific MAC addresses.
1- Test 1: I like to disable DYNAMIC learning for MAC-Addresses. Here is the
configuration:
{
bridge 10 protocol vlan-bridge
no bridge 10 acquire
!
interface FastEthernet0/1
no switchport
no ip address
bridge-group 10
!
interface FastEthernet0/2
no switchport
no ip address
bridge-group 10
}
The result was that the switch still learning the mac addresses of the two
routers dynamically. I don't why!?
{
Rack8SW1(config)#do show bridge 10
Br Group Mac Address State Type Ports
-------- ----------- ----- ---- -----
10 001b.0c3c.34d9 Forward DYNAMIC Fa0/2
10 001b.0cd0.3bc8 Forward DYNAMIC Fa0/1
}
2- Test 2: I tried to statically forward and discard one of the two mac
addresses. Here is the configuration I have added:
{
bridge 10 address 001b.0c3c.34d9 forward
bridge 10 address 001b.0cd0.3bc8 discard
}
The result is that I got the same output. Means no change happened. Here is
the result again:
{
Rack8SW1(config)#do show bridge 10
Br Group Mac Address State Type Ports
-------- ----------- ----- ---- -----
10 001b.0c3c.34d9 Forward DYNAMIC Fa0/2
10 001b.0cd0.3bc8 Forward DYNAMIC Fa0/1
}
Your support is much appreciated.
Thanks
Mahmoud.
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