Link to home
Start Free TrialLog in
Avatar of leblanc
leblanc

asked on

mac address not showing

I was in a Cisco 2960S and I was able to ping an IP address. However when I do sh arp | inc 10.10.10.1, it did not display it. I had to do sh mac address-table to find that MAC address with the port it is connected to. I want to know why sh arp did not show that IP address. Usually it does. Thanks
Avatar of Don Johnston
Don Johnston
Flag of United States of America image

Is the 2960 in layer 2 mode or layer 3 mode?  
Is the 10.10.10.1 host directly connected to the 2960?
Is the 10.10.10.1 host on the same IP network as the management address of the switch?
Avatar of leblanc
leblanc

ASKER

layer 2 for 2960.
10.10.10.1 is directly connected to the 2960.
it is not the same as the management subnet.
ASKER CERTIFIED SOLUTION
Avatar of Don Johnston
Don Johnston
Flag of United States of America image

Link to home
membership
This solution is only available to members.
To access this solution, you must be a member of Experts Exchange.
Start Free Trial
Avatar of leblanc

ASKER

Hmm... So it is difficult to locate the port where the device is connected to.
SOLUTION
Link to home
membership
This solution is only available to members.
To access this solution, you must be a member of Experts Exchange.
Start Free Trial
Avatar of leblanc

ASKER

yes. I did the sh arp at the DG and get its MAC address from there. then I went to the switch where it is connected to the do sh mac address, then discover the port that way.
Right...  Just an extra step.