just looking at a quick test setup I did, I am jumping to the conclusion
that the BVI mac is that of any particular interface that 1) already has a
BIA, such as a TR or an E or an FE AND 2) is a member of the bridge group.
It may be that if there are multiple interfaces with BIA's, that the address
taken is that of the first interface placed into the bridge group.
I have not verified this on CCO.
example follows:
Ethernet0/0 is up, line protocol is up
Hardware is AmdP2, address is 0010.7bc7.3640 (bia 0010.7bc7.3640)
Ethernet0/1 is up, line protocol is up
Hardware is AmdP2, address is 0010.7bc7.3641 (bia 0010.7bc7.3641)
Ethernet0/2 is up, line protocol is up
Hardware is AmdP2, address is 0010.7bc7.3642 (bia 0010.7bc7.3642)
Ethernet0/3 is up, line protocol is up
Hardware is AmdP2, address is 0010.7bc7.3643 (bia 0010.7bc7.3643)
BVI1 is up, line protocol is up
Hardware is BVI, address is 0010.7bc7.3642 (bia 0000.0000.0000)
interface Ethernet0/1
ip address 192.168.1.1 255.255.255.0
no keepalive
bridge-group 1
!
interface Ethernet0/2
ip address 192.167.1.1 255.255.255.0
no keepalive
bridge-group 1
interface BVI1
ip address 10.3.3.5 255.255.255.0
HTH
Chuck
-----Original Message-----
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On Behalf Of
CCIE Wannabe
Sent: Sunday, September 02, 2001 9:47 PM
To: [EMAIL PROTECTED]
Subject: Re: How to determine MAC address of a BVI? [7:18271]
Thanks for the response!
My question has more to do with: if we didn't hardcode the MAC address
of a BVI, what address would it use? I speculate it would then use one
of the MAC addresses of a physical interface. I am trying to figure out
which interface would it choose, assuming that there are multiple
physical interfaces on the router that belongs to the same bridge group
as the BVI number.
Thanks.
Brian wrote:
> On Sun, 2 Sep 2001, CCIE Wannabe wrote:
>
>
>>Does anyone know how to determine the MAC address of a BVI? Is it
>>randomly selected from one for interfaces on the bridge group? Or is
>>there a preference for a particular interface on the bridge group?
>>
>
> sh run int bvi will show you the MAC. Its a good idea to hard code the
> mac address of a BVI. If the router reboots, the mac could change, and
> some people would be left not being able to get places.
>
> Brian
>
>
>
>>Thanks!
>>
> I'm buying / selling used CISCO gear!!
> email me for a quote
>
> Brian Feeny, CCIE #8036 Netjam, LLC
> [EMAIL PROTECTED] http://www.netjam.net
> VISA/MC/AMEX/COD phone: 318-212-0245
> 30 day warranty fax: 318-212-0246
Message Posted at:
http://www.groupstudy.com/form/read.php?f=7&i=18292&t=18271
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