Cisco 3750X Duplicate IP Address

5 pts.
Tags:
Cisco 3750X
Cisco 6509
I'm currently having an issue with a 3750X switch connected to 6509E switch whereby the 3750X keeps rebooting/reloading and then producing  duplicate IP messages. I have checked all the address and could not locate anything that match. I then went on to disconnect the 3750x and for some unknow reason it continued to recieve duplicate IP address error messages but from it's own IP address. Can any one point me in the right direction to both questions. The reboots and duplicate IP's? Error when connected together: Mar 1 11:35:32.962: %OSPF-4-DUP_RTRlD_NBR: OSPF detected duplicate router-id

10.192.244.1 from 10.193.244.1 on interface GigabitEthernetl/0/24

*Mar 1 11:35:43.423: %OSPF-4-DUP_RTRlD_AREA: Detected router with duplicate router

ID 10.192.244.1 in area 0.0.0.0

*Mar 1 11:36:18.387: %OSPF-4-FLOOD_WAR: Process 100 flushes LSA ID 10.209.4.0

type-5 adv-rtr 10.192.244.1 in area 0.0.0.0

-'Mar 1 11:36:33.075: %OSPF-4-DUP_RTRlD_NBR: OSPF detected duplicate router-id

10.192.244.1 from 10.193.244.1 on interface GigabitEthernetl/0/24

Error when own it's own and not connected to 6509E Mar 1 00:02:10:342: %OSPF-4-DUP_RTRID_NBR: OSPF detected duplicate router-id 10.193.244.5 from 10.193.244.5 on interface GigabitEthernet2/0/23 *Mar 1 00:02:10:344: %OSPF-4-DUP_RTRID_NBR: OSPF detected router with duplicate router ID 10.193.244.5 in area 0.0.0.0 *Mar 1 00:02:10:354: %OSPF-4-FLOOD_WAR: Process 100 flushes LSA ID 10.209.4.0 type-5 adv-rtr 10.193.244.5 in area 0.0.0.0 *Mar 1 00:02:10:365: %OSPF-4-DUP_RTRID_NBR: OSPF detected duplicate router-id 10.193.244.5 from 10.193.244.5 on interface GigabitEthernet2/0/23 *Mar 1 00:02:10:389: %OSPF-4-DUP_RTRID_NBR: OSPF detected router with duplicate router ID 10.193.244.5 in area 0.0.0.0 *Mar 1 00:02:10:392: %OSPF-4-FLOOD_WAR: Process 100 flushes LSA ID 10.209.4.0 type-5 adv-rtr 10.193.244.5 in area 0.0.0.0 *Mar 1 00:03:01:236: %OSPF-3-INVALID_ENCR_PASSWORD: Invalid ecnrypted password sc60pf *Mar 1 00:03:01:257: %OSPF-3-INVALID_ENCR_PASSWORD: Invalid ecnrypted password sc60pf Any help would appreciated

Software/Hardware used:
Cisco 3750x and Cisco 6509E
ASKED: April 26, 2012  11:54 AM
UPDATED: June 21, 2012  3:09 AM

Answer Wiki

Thanks. We'll let you know when a new response is added.

The error indicates an issue with the OSPF settings. You have a duplicate router ID in OSPF.
In configuration mode go to the OSPF router number and change the router ID.

Router OSPF —-
Router-id ———

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