The hard limit is to keep someone from stacking networks behind a port.

On Wed, Nov 2, 2022 at 2:58 PM David Farmer
<0000000e7948cb21-dmarc-request@lists.iphouse.net> wrote:
>
> Maybe we don't need to define a hard limit of 1 or 2, but only that the list needs to be static, as in not auto-detected but a defined list; the point is to be able to quash/filter unknown unicast traffic.
>
> On Wed, Nov 2, 2022 at 9:33 AM Jay Hanke <jayhanke@southfront.io> wrote:
>>
>> What if we raised the maximum number of static mac addresses to 2 (to
>> allow for migrations and to allow Jeremy to sleep) in the mac acl?
>>
>> On Mon, Oct 31, 2022 at 12:48 PM Mike Johnston <mjohnston@wiktel.com> wrote:
>> >
>> > Well articulated, as always, David.  Thank you.
>> >
>> >
>> > I am in favor of the use of static MAC ACL, even if that requires manual
>> > changes to that ACL, and the additional coordination that may consume.
>> > A few thoughts, though....
>> >
>> > Maybe 1G links are exempt from this?  Since a couple second switching
>> > loop from a 1G port is not as impactful?  ????? Thoughts from others,
>> > please.
>> >
>> > Using a static MAC ACL could make troubleshooting a failure more
>> > problematic.  For example, replacing a line card to "see if that fixes
>> > the issue" could send a tech down a trail of red hearings. Even if the
>> > member is fully aware that they need to coordinate the MAC change, this
>> > sort work is often being done in response to an unexpected outage.  The
>> > added time spend on the coordination could be seen as frustrating.  But,
>> > for some members it's not a big deal, and can use other links until
>> > their MICE connectivity is restored.
>> >
>> > I've heard that some members are using a virtual MAC address, which is
>> > probably the way to avoid needing to coordinate in the first place.
>>
>>
>>
>> --
>> Jay Hanke, President
>> South Front Networks
>> jayhanke@southfront.io
>> Phone  612-204-0000
>
>
>
> --
> ===============================================
> David Farmer               Email:farmer@umn.edu
> Networking & Telecommunication Services
> Office of Information Technology
> University of Minnesota
> 2218 University Ave SE        Phone: 612-626-0815
> Minneapolis, MN 55414-3029   Cell: 612-812-9952
> ===============================================
>
> ________________________________
>
> To unsubscribe from the MICE-DISCUSS list, click the following link:
> http://lists.iphouse.net/cgi-bin/wa?SUBED1=MICE-DISCUSS&A=1



--
Jay Hanke, President
South Front Networks
jayhanke@southfront.io
Phone  612-204-0000