Title: RE: Swithces !!!
Thanks for your reply, but
This was happening in a single subnet lan without any router/vlan in between.
The arp was cleared before pinging the machine from both the pcs.
The switch are stacked, all the three pcs are connected to physically different switches but same lan.
An important poing I found about switches I would like to share,
Normally the switch should advertise its lowest mac value to the network, and if the ip is configured on this switch this lowest mac address should be used.
For instance
If the switch has 12 ports with corresponding macs,
001
002
003..
...
...
It should use the lowest mac (001) for any ip based communication with another switches/pc/ devices. but if the switch is not using this default technique this process is known as some bug flaw and I dont know yet the technical term for it.
Hope I am seeing in the right direction,
Thanks anyway.
-Original Message-
From: Hitesh Pathak (CSD-BBYRO-RTSG) [mailto:[EMAIL PROTECTED]]
Sent: Wednesday, August 09, 2000 11:21 AM
To: '[EMAIL PROTECTED]'
Subject: RE: Swithces !!!
Dear,
I believe that whenever u ping to any device , it's mac to ip address
mapping gets added to ur arp cache table. If there is any router/switch or
any other device comes in between it will return the response with that
device's mac address rather than actual device. In ur case that might be
happenning. Try giving # traceroute or # tracert command verify the route
that it takes to reach to that device.
Hitesh
-Original Message-
From: Raees Ahmed Shaikh [SMTP:[EMAIL PROTECTED]]
Sent: Wednesday, August 09, 2000 12:07 PM
To: '[EMAIL PROTECTED]'
Subject: Swithces !!!
Dear Buddies,
Have a question about switches if anybody can put some light on it,
Can a switch advertise more than one mac address, for ip communication.
In our network we observed the following.
Pinging and checking the arp table resulted in different mac addresses
from different segments. The same ip address was ping from two different
segment and on checking the arp table we found that the mac address
related to the ip is different to both segments.
The inference I took out from the same is that whether two different
interfaces on one pc/router/or networking component could share the same
ip address.
Please correct me if I am missing some thing.
Thanks in advance.
Shaikh Raees Ahmed,
Cisco Certified Network Associate,
Microsoft Certified Systems Engineer,
Systems Network,
IT Division.
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