Is it possible to map a static IP to a given MAC on a Cisco switch?

Unanswered Question
Jul 22nd, 2009

Hi, I need to do the below on a 3750-48P and 2950:

Imagine I have a terminal server. Terminal server vendor tells me that I should grab the given terminal server MAC address and assign it to an IP address temporarily on the Cisco switch, connect the terminal server to the Cisco switch, telnet to the terminal server, so I can configure it using the temporary IP.

I tried to the following but I would like to confirm this is right:

On the Cisco switch I did:

config t

mac-address-table static <given_MAC> vlan 300 int fa0/1

Then I assigned port fa0/1 to vlan 300:

config t

int fa0/1

switchport mode access

switchport access vlan 300

Now the problem is that I still do not see how I can assign a temporary IP to the respective MAC address though.

Any ideas?

I have this problem too.
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news2010a Wed, 07/22/2009 - 13:57

Darn. It sounds like:

Switch(config)#arp 0090.x410.2d08

can do.

In case anyone knows this, please let me know if I should use 'arpa' option for this.

news2010a Wed, 07/22/2009 - 15:03

Never mind. Got this one.


Encapsulation type. The encapsulation types are:





For Ethernet interfaces, this is typically the arpa keyword.

Peter Paluch Fri, 07/24/2009 - 06:02


Sure, use the 'arpa' option - that is the usual Ethernet_II format.

Best regards,



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