From: balaji.balakrishnan (balaji.balakrishnan@swift.com)
Date: Fri Jan 30 2004 - 11:39:23 GMT-3
Kasturi,
Yes. It looks only theoritical. Router always reply back and forward any traffic with its own physical MAC either if you use bia
or not..
Check out yourself.
11159.0: 7(o):0010db2d6447->0000.0c07.ac01/0800 ----> Ping to HSRP IP/ MAC
192.168.10.9->192.168.10.3/1, tlen=128
vhl=45, tos=00, id=4026, frag=0000, ttl=64
11159.0: 7(i):00070ea60d80->0010db2d6447/0800 ---> Reply from Cisco with physical MAC
192.168.10.3->192.168.10.9/1, tlen=56
vhl=45, tos=00, id=43399, frag=0000, ttl=255
interface Ethernet0/0
description customer network interface
ip address 192.168.10.1 255.255.255.0
standby 1 ip 192.168.10.3
standby 1 priority 110
standby 1 preempt
end
sh arp
Protocol Address Age (min) Hardware Addr Type Interface
Internet 192.168.10.3 - 0000.0c07.ac01 ARPA Ethernet0/0
Internet 192.168.10.1 - 0007.0ea6.0d80 ARPA Ethernet0/0
Internet 192.168.10.9 8 0010.db2d.6447 ARPA Ethernet0/0
- Bala.
kasturi cisco wrote:
> Balaji, Sorry did not read ur Q completely...
> I am under the impression that when u use HSRP the MAc address used
> should be the address of the HSRP virtual mac address and not actual
> physical the Mac address. HSRP uses the mac address of the format
> 00.00.0c.07.ac.hsrp-group#. The 07.ac is the HSRP virtual mac address
> indicator and this is the one which it should be using. I think if u use
> the "standby use-bia" command under HSRP config them it should use the
> Physical Mac. Can u please post ur configs and what router platform it is
> ? Someone care to add or correct me if wrong.
>
> Good Luck,
> Kasturi.
>
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