Q: Resolving duplicate IP addresses

You'll need to query your switch infrastructure in order to find the device with mac address 0004.003c.0274. (On a cisco, use "show mac-address-table | inc

0274".) Then just follow the wires...
Reply to
Mike Dorn
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Hi,

I get this msg:

0:33:23: %IP-4-DUPADDR: Duplicate address 10.0.0.11 on Ethernet0, sourced by 000 4.003c.0274 0:34:38: %IP-4-DUPADDR: Duplicate address 10.0.0.11 on Ethernet0, sourced by 000 4.003c.0274 0:34:48: %IP-4-DUPADDR: Duplicate address 10.0.0.11 on Ethernet0, sourced by 000 4.003c.0274 0:34:58: %IP-4-DUPADDR: Duplicate address 10.0.0.11 on Ethernet0, sourced by 000 4.003c.0274

My config shows:

************* SanJose1#sh arp Protocol Address Age (min) Hardware Addr Type Interface Internet 10.0.0.11 - 00e0.1eb9.9616 ARPA Ethernet0 SanJose1#sh ip int brief Interface IP-Address OK? Method Status Protocol BRI0 unassigned YES not set administratively down down Ethernet0 10.0.0.11 YES manual up up Serial0 unassigned YES not set administratively down down Serial1 192.168.1.2 YES NVRAM down down SanJose1#

I checked all my LAN PCs and another router's Ethernet interface and there is no other 10.0.0.11. How can I tell where the conflict is coming from?

Thanks, V

Reply to
Voitec

A quick check on

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mac adress to come from Lexmark print server

Check IP on your printers

Jon

"Mike Dorn" skrev i meld>> Hi,

Reply to
test

Thank you both!

Yep, it was one of the printers. Somehow they were forgotten about in my search...I'd say it's time to label my devices. The coffer link is now in my bookmarks. Nice little site.

Thanks again :) V

Interface

Ethernet0

up

Reply to
Voitec

Mac-address 0004.003c.0274 is LEXMARK INTERNATIONAL, INC. So maybe its printer.

"Voitec" kirjoitti viestissä:wSE5e.4422$ snipped-for-privacy@news-server.bigpond.net.au...

Reply to
Make

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