Switch showing MAC but no IP

Support questions about the MAC Track plugin

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WiCk3d
Posts: 8
Joined: Tue May 10, 2011 8:21 am

Switch showing MAC but no IP

Post by WiCk3d »

Hi

Could you please shed some light on why a Cisco Catalyst 500 series switch would display MAC addresses but not any IP addresses? Please take a look at the screenshots I have attached and let me know if any incorrect settings jump out at you.

Thanks in advanced for your help.
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Device Tracking Devices.jpg
Device Tracking Devices.jpg (56.64 KiB) Viewed 4518 times
Router Device Type.JPG
Router Device Type.JPG (88.12 KiB) Viewed 4518 times
Switch Device Type.JPG
Switch Device Type.JPG (97.22 KiB) Viewed 4518 times
WiCk3d
Posts: 8
Joined: Tue May 10, 2011 8:21 am

Re: Switch showing MAC but no IP

Post by WiCk3d »

I'm sure I'm missing something here so a shove in the right direction would be greatly appreciated please.
Syntax
Posts: 10
Joined: Thu Jul 14, 2011 1:55 am

Re: Switch showing MAC but no IP

Post by Syntax »

Hello, I think you must choose "Switch/Router" as "Device type". If you choose "Hub/Switch", it will always show you "N/A"
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JorisFRST
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Re: Switch showing MAC but no IP

Post by JorisFRST »

Hi, Layer 2 devices only have a mac-address table, they don't have an ARP table so can't show IP addresses.

Your router should give out the ARP table to mactrack. Then mactrack maps the IP's to the Mac addresses.

That is if both the router and the switch are in the same "site".

Joris.
Joris.
http://www.routerjanitor.com
Syntax
Posts: 10
Joined: Thu Jul 14, 2011 1:55 am

Re: Switch showing MAC but no IP

Post by Syntax »

I'm aggre with you Joris but you need as well to configure your switch in "Switch/Router".
Moreover, if it doesn't work after that, see my post : http://forums.cacti.net/viewtopic.php?f=15&t=43741
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JorisFRST
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Re: Switch showing MAC but no IP

Post by JorisFRST »

I have all my L2 switches as switch/hub and in that view IP's is indeed N/A

but in the mactrack / Mac addresses tab, the IP's get mapped to the correct macaddress and port.
Joris.
http://www.routerjanitor.com
Syntax
Posts: 10
Joined: Thu Jul 14, 2011 1:55 am

Re: Switch showing MAC but no IP

Post by Syntax »

Ok, I didn't know it, thanks. So if tou want to avoid the "N/A" in the device Tab then choose "Switch/Router" :)
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