Trace Ip address

[mandg]

Is there some command that will allow me to isolate a particualr switch port from a known IP address on the network?

Thanks.

 

[mandg]

Wait a minute...reverse that. I know the pysical port that the user is plugged into (on the switch) and I now I just want to identify what his IP address is...

 

[ADB100]

If its all Cisco IOS equipment then:

On the switch type:

switch# show mac-address-table interface fastethernet 0/2

Mac Address Table
-------------------------------------------

Vlan Mac Address Type Ports
---- ----------- -------- -----
10 0050.11ab.134b STATIC Fa0/2
Total Mac Addresses for this criterion: 1

That obtains the MAC address of the attached device. Then on the Layer-3 switch or router for that VLAN type:

router# show ip arp | include 0050.11ab.134b

Internet 192.168.100.10 0 0050.11ab.134b ARPA Vlan10


HTH

Andy

 

[mandg]

Stupid question... Can I access the switch through the router or do switch connections require a serial (hyperterm) connection only?