From: Tariq Sharif (tariq_sharif@xxxxxxxxxxxxxx)
Date: Tue Apr 10 2001 - 12:28:07 GMT-3
Sorry guys, I was after generic MAC filtering. e.g. with IRB etc not DLSw+
Ok, here is the question I have:
R2 has IRB running with 1 Ethernet interface, serial & 1 BVI. Configure an
MAC Address filter on R2 so that it will block broadcast and multicast
packets for a host on its Ethernet Bridge segment. The filter is shown
below. Now why is 1st line in the filter with mask of "feff". I know we need
to match multicasts which start with "0100" but shouldn't the mask for this
portion be "f0ff" rather than "feff"?
hostname R2
bridge irb
interface Ethernet1/0
no ip address
bridge-group 1
bridge-group 1 input-pattern-list 1100
!
interface Serial1/0
ip address 140.1.5.2 255.255.255.0
interface BVI1
ip address 140.1.3.2 255.255.255.240
!
bridge 1 protocol ieee
bridge 1 route ip
!
access-list 1100 deny 0000.0000.0000 ffff.ffff.ffff 0100.0000.0000
feff.ffff.ffff
access-list 1100 deny 0000.0000.0000 ffff.ffff.ffff ffff.ffff.ffff
0000.0000.0000
access-list 1100 permit 0000.0000.0000 ffff.ffff.ffff 0000.0000.0000
ffff.ffff.ffff
-----Original Message-----
From: Patrick Murphy [mailto:pjm@roadrunner.nf.net]
Sent: 10 April 2001 16:04
To: Tariq Sharif; Ccielab@Groupstudy. Com
Subject: Re: MAC Address Filter Examples
http://www.cisco.com/warp/public/697/dlswfilter.shtml
The best I have seen yet!
Patrick
----- Original Message -----
From: "Tariq Sharif" <tariq_sharif@yahoo.com>
To: "Ccielab@Groupstudy. Com" <ccielab@groupstudy.com>
Sent: Tuesday, April 10, 2001 11:49 AM
Subject: MAC Address Filter Examples
> Does anyone know where I can get MAC Address Filter Examples or info?
>
> Many thanks & regards.
>
> Tariq Sharif
>
> [GroupStudy.com removed an attachment of type application/ms-tnef which
had a name of winmail.dat]
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