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Internet router arp output error

I've a c3640 Internet router recently upgraded to IOS 12.0.26 showing the following output in connection with the SHOW ARP commend despite that I did " clear ARP " just a minute ago:

Internet_II#sh arp

Protocol Address Age (min) Hardware Addr Type Interface

Internet 63.161.138.20 0 Incomplete ARPA

Internet 216.207.28.11 0 Incomplete ARPA

Internet 63.161.138.21 0 Incomplete ARPA

Internet 216.207.28.10 0 Incomplete ARPA

Internet 63.161.138.22 0 Incomplete ARPA

Internet 216.207.28.9 0 Incomplete ARPA

Internet 63.161.138.23 0 Incomplete ARPA

Internet 216.207.28.8 0 Incomplete ARPA

Internet 63.161.138.16 0 Incomplete ARPA

Internet 216.207.28.15 0 Incomplete ARPA

Internet 63.161.138.17 0 Incomplete ARPA

Internet 216.207.28.14 0 Incomplete ARPA

Internet 63.161.138.18 0 Incomplete ARPA

Internet 216.207.28.13 0 Incomplete ARPA

Internet 63.161.138.19 0 Incomplete ARPA

Internet 216.207.28.12 0 Incomplete ARPA

Internet 63.161.138.28 0 Incomplete ARPA

Internet 216.207.28.3 0 Incomplete ARPA

Internet 63.161.138.29 0 Incomplete ARPA

Internet 216.207.28.2 0 Incomplete ARPA

Internet 63.161.138.30 0 Incomplete ARPA

Internet 216.207.28.1 - 00d0.bad2.bd01 ARPA Ethernet0/0

Internet 63.161.138.31 0 Incomplete ARPA

What's the problem?

1 REPLY
Bronze

Re: Internet router arp output error

Presumably traffic is being sent through the router destined to those IP addresses. Putting a sniffer somewhere is probably the best way to figure out what the traffic is.

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