08-07-2006 08:59 AM - edited 03-05-2019 12:00 PM
hey Guys
What commmand would I use to view the current IP addresses being use. I'm having a problem with IP address conflicting.Please note this is the fist time I'm working with a Cisco router. I have the proper access to get to the router. Thank You in Advnace
08-07-2006 10:26 AM
there are a few ways to see what IP addresses a cisco router is aware of:
1) do a 'show arp' at the router prompt. (to view all arp entries the router has)
2) check the DHCP server if the router is running one with 'show dhcp server | lease | pool (to view any DHCP pools/leases the router is handling)
3) do a 'show ip interface' to get a list of interfaces running IP. (to view all interfaces, and their addresses, configured for IP)
08-07-2006 05:38 PM
You may also try to use some scan tool (not from Cisco) to scan the active IP in the network. Or write a script to ping the range.
08-08-2006 12:09 PM
If you are looking for ip addresses used for the router itself you can do
show ip interface brief
if you are looking for what addresses router sees you should look at arp table
show arp
Also consider looking at the logs , if you have logging configured. You may see something of value there
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