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When I ping this address on my internal network, it says "reply from ....165". See below.

What does it mean? How is .165 relevant in this scenario?

Pinging 192.168.1.10 with 32 bytes of data:
Reply from 192.168.1.165: Destination host unreachable.
Reply from 192.168.1.165: Destination host unreachable.
Reply from 192.168.1.165: Destination host unreachable.
Reply from 192.168.1.165: Destination host unreachable.

edit

Just realised the cable for .10 was sitting out of the router because the cable clip is broken. Pushed it back in and now when I ping it this is the result

C:\Users\Jason Fonseca>ping 192.168.1.10

Pinging 192.168.1.10 with 32 bytes of data:
Reply from 192.168.1.10: bytes=32 time<1ms TTL=255
Reply from 192.168.1.10: bytes=32 time<1ms TTL=255
Reply from 192.168.1.10: bytes=32 time<1ms TTL=255
Reply from 192.168.1.10: bytes=32 time<1ms TTL=255

I'm still struggling to understand why it mentions .165 though.

Jason

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I suggest getting a new cable, or putting a new terminator on the broken end. –  Iszi May 10 '11 at 0:46

4 Answers 4

up vote 5 down vote accepted

It's also possible that .165 is the address of your machine.

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It's likely your router (probably your default gateway) replying. You can check using ipconfig.

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Reply from 192.168.1.165: Destination host unreachable.

This doesn't mean .165 is not reachable but that .165 can't reach the address you asked to ping. Probably .165 is you own machine or your router.

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There are some switches (I've seen it from Netgear) that reply like that as well. I don't believe this is correct behavior for the default gateway or switch. It should report a time out

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