I was tasked to find a bunch of printers on the network. Cable labeling was a train wreck, and we needed to know where all the printers were so that we could change them to appropriate vlans. Thankfully, the company knew the IP addresses of the printers. So, if they know that, I can find the printers.
First, get the printer in the arp table by pinging it.
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 192.168.13.71, timeout is 2 seconds:
Success rate is 100 percent (5/5), round-trip min/avg/max = 1/202/1000 ms
Then, find out the mac address.
Cisco_Switch#sh arp 192.168.13.71
Protocol Address Age (min) Hardware Addr Type Interface
Internet 192.168.13.71 0 0080.9176.1234 ARPA Vlan1
Then, find out what port its on.
Cisco_Switch#sh mac add add 0080.9176.1234
Mac Address Table
Vlan Mac Address Type Ports
---- ----------- -------- -----
1 0080.9176.1234 DYNAMIC Gi2/0/5
Total Mac Addresses for this criterion: 1
This is the retired Shane Killen personal blog, an IT technical blog about configs and topics related to the Network and Security Engineer working with Cisco, Brocade, Check Point, and Palo Alto and Sonicwall. I hope this blog serves you well. -- May The Lord bless you and keep you. May He shine His face upon you, and bring you peace.
Friday, November 13, 2015
Cisco Switch: Three Commands To Find A Device In CLI
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Can this be automated in some why so that the connected port for a range of Ip addressess can be discovered ?ReplyDelete
I'm sure Brocade Network Advisor (BNA) would do this automatically for you. Other than that, I'm sure there are other third party software that might. I never use those things, probably because if the type of role I do. But it might be worth looking at.Delete