TRACKING CONNECTED DEVICE DOWN A CISCO SWITCH

[chrismtove]

I have IP address and mac address i wanted to track down on which exactly switch and ports it the device connected also is cisco device but when i run the below commands does not show any output what could be the problems?

TAASERVER3750-1#show mac address-table address 544a.00bc.9f40
Mac Address Table
-------------------------------------------

Vlan Mac Address Type Ports
---- ----------- -------- -----

TAASERVER3750-1#show mac address-table | include 544a.00bc.9f40
TAASERVER3750-1#

How can i locate the switch and ports please?

[Mark Malone]

Ping the ip address again so it goes into the mac/arp tables then use your commands above to trace

You can only trace macs that are live in the layer 2 tables

[chrismtove]

ok

i will try later but if you show ip arp

TAASERVER3750-1#show ip arp

Protocol Address Age (min) Hardware Addr Type Interface
Internet 192.168.1.98 68 90b1.1ca7.acda ARPA Vlan1
Internet 192.168.1.65 0 34e6.d70c.57d1 ARPA Vlan1
Internet 192.168.1.66 224 544a.00bc.9f40 ARPA Vlan1
Internet 192.168.1.13 0 001b.7896.6cb4 ARPA Vlan1
Internet 192.168.1.24 92 001d.e69c.dac0 ARPA Vlan1
Internet 192.168.1.20 37 0090.fb4a.99e8 ARPA Vlan1
Internet 192.168.1.23 1 001d.e6d2.ec40 ARPA Vlan1
Internet 192.168.1.22 - 001d.e629.82c0 ARPA Vlan1
Internet 192.168.1.242 128 0021.9b37.adf9 ARPA Vlan1
Internet 192.168.1.216 229 bc30.5bab.5159 ARPA Vlan1
Internet 192.168.1.161 238 782b.cbae.00ca ARPA Vlan1
Internet 192.168.1.166 192 0023.ae90.3f7e ARPA Vlan1

now i wanted to get exactly the port connected with the ip .66 and its mac address as show above in bolded

[Mark Malone]

you should be able to once its in your arp table and complete that's exactly how you trace a layer 2 mac as below

SW1#sh mac address-table address d89d.6714.03ac
          Mac Address Table
-------------------------------------------

Vlan    Mac Address       Type        Ports
----    -----------       --------    -----
   1    d89d.6714.xxxx    DYNAMIC     Gi0/44
Total Mac Addresses for this criterion: 1

sw1#sh ip arp d89d.6714.xxxx
Protocol  Address          Age (min)  Hardware Addr   Type   Interface
Internet  189.x.x.x       189   d89d.6714.xxxx  ARPA   Vlan1