dex 1 inet 127.0.0.1 netmask ff000000 dmfeo: flags=1000843<UP, BROADCAST, RUNNING, MULTICAST, IPv4> mtu 1500 index 2 inet 172.16.1.9 netmask ffff0000 broadcast 172.16.255.255 ether 0:13:ba:da:d1:ca Then, take the MAC address (shown on the last line) and include it in the IOS com- mand show mac-address-table include mac-address: Switch1-I0S>sho mac-address-table I include 0013. bada.d1ca 18 0013.bada.d1ca dynamic Yes Gi3/22 Note the format when using MAC addresses, as different systems dis- play MAC addresses differently. You'll need to convert the address to the appropriate format for IOS or CatOS. IOS displays each group of two-byte pairs separated by a period. Solaris and most other operating systems display each octet separated by a colon or hyphen (CatOS uses a hyphen as the delimiter when displaying MAC addresses in hexadec- imal). Some systems may also display MAC addresses in decimal, while others use hexadecimal. The output from the preceding command shows that port Gi3/22 is where our server is connected. In NX-OS, the command is the same as IOS, though the interface names reflect the Nexus hardware (in this case, a 5010 with a 2148T configured as FEX100): -1(config-if)# sho mac-address-table MAC Address 0005.9b74.b811 dynamic 0 Po100 0013.bada.d1ca dynamic 40 Eth100/1/2 Total MAC Addresses: 2 On a switch running CatOS, this works a little differently because the show cam com- mand contains an option to show a specific MAC address: Switch1-Catos: (enable) sho cam 00-00-13-ba-da-d1-ca * = Static Entry. + = Permanent Entry. # = System Entry. R = Router Entry. X = Port Security Entry $ = Dot1x Security Entry VLAN Dest MAC/Route Des [CoS] Destination Ports or VCs / [Protocol Type] 00-13-ba-da-d1-ca 3/48 [ALL] Total Matching CAM Entries Displayed =1 Switches Switch Types Cisco switches can be divided into two types: fixed-configuration and modular switches. Fixed-configuration switches are smaller-usually one rack unit (RU) in size. These switches typically contain nothing but Ethernet ports and are designed 