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Command to see if IP or MAC is getting to Cisco Router
I have a 2821 router and I'm trying to see if a specific IP or MAC is passing the WAN and hitting this router. What is the command to monitor for this?
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I have a device on one side of my WAN that isn't talking to the device on the other side of the WAN so I want to see if the request is getting across the WAN (not blocked) by seeing if I can see any trace of that IP or MAC registering with the router on the other side of the WAN
John-Charles-Herzberg suggestion of using tracert is a good place to start. This assumes that all the routing equipment is configured to allow ICMP packets through.
Depending on the type of routers used, you could look at the ACL's and/or do packet captures of traffic flowing through them.
Depending on the type of routers used, you could look at the ACL's and/or do packet captures of traffic flowing through them.
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What is it you are trying to do?