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Duplex Mismatch

This is the logs from switch log monitoring window i have got................

2011-03-03 12:28:35

23

4

10.40.10.231

Mar 3 06:30:09.120: %CDP-4-DUPLEX_MISMATCH: duplex mismatch discovered on FastEthernet1/0/11 (not half duplex), with SEP64168D51BEA6 Port 1 (half duplex).

2011-03-03 12:28:20

23

4

10.40.8.233

.Mar 2 22:51:27: %CDP-4-DUPLEX_MISMATCH: duplex mismatch discovered on FastEthernet0/11 (not half duplex), with SEP0026CBBE8C63 Port 1 (half duplex).

2011-03-03 12:28:19

23

4

10.40.8.234

.Mar 2 22:51:27: %CDP-4-DUPLEX_MISMATCH: duplex mismatch discovered on FastEthernet0/25 (not half duplex), with SEP64168D51BAD2 Port 1 (half duplex).

2011-03-03 12:28:15

23

4

10.40.6.207

5d21h: %CDP-4-DUPLEX_MISMATCH: duplex mismatch discovered on FastEthernet0/39 (not half duplex), with SEP0026CBBE8C61 Port 1 (half duplex).

When state changed to HALF DUPLEX for all the ports.its getting Opposite mismatching alert.

2011-03-03 14:44:46

23

4

10.40.10.231

Mar 3 08:46:20.844: %CDP-4-DUPLEX_MISMATCH: duplex mismatch discovered on FastEthernet1/0/11 (not full duplex), with SEP001AA11BBDE7 port 1 (full duplex).

2011-03-03 14:44:30

23

4

10.40.8.234

.Mar 3 01:07:37: %CDP-4-DUPLEX_MISMATCH: duplex mismatch discovered on FastEthernet0/25 (not full duplex), with SEP0026CB3C0154 Port 1 (full duplex).

2011-03-03 14:44:18

23

4

10.40.8.233

.Mar 3 01:07:25: %CDP-4-DUPLEX_MISMATCH: duplex mismatch discovered on FastEthernet0/11 (not full duplex), with SEP0026CB3BFDF4 Port 1 (full duplex).

2011-03-03 14:44:05

23

4

10.40.6.207

*Mar 6 23:55:26: %CDP-4-DUPLEX_MISMATCH: duplex mismatch discovered on FastEthernet0/39 (not full duplex), with SEP0023EB51FC02 Port 1 (full duplex).

Now its change to DUPLEX AUTO...then its goes to the stage one(initial alert).....


--

2011-03-03 15:34:27

23

4

10.40.8.233

.Mar 3 01:57:35: %CDP-4-DUPLEX_MISMATCH: duplex mismatch discovered on FastEthernet0/11 (not half duplex), with SEP0026CBBE8C63 Port 1 (half duplex).

2011-03-03 15:34:23

23

4

10.40.6.207

*Mar 7 00:45:45: %CDP-4-DUPLEX_MISMATCH: duplex mismatch discovered on FastEthernet0/39 (not half duplex), with SEP0026CBBE8C61 Port 1 (half duplex).

2011-03-03 15:33:42

23

4

10.40.10.231

Mar 3 09:35:17.480: %CDP-4-DUPLEX_MISMATCH: duplex mismatch discovered on FastEthernet1/0/11 (not half duplex), with SEP64168D51BEA6 Port 1 (half duplex).

2011-03-03 15:33:27

23

4

10.40.8.234

.Mar 3 01:56:35: %CDP-4-DUPLEX_MISMATCH: duplex mismatch discovered on FastEthernet0/25 (not half duplex), with SEP64168D51BAD2 Port 1 (half duplex).



The devices connected SEP<MAC>to each port is Cisco ATA for Fax and analog phones........................




please give me a solution.


how can i resolve this issuue.?>

Everyone's tags (2)
1 REPLY 1
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Re: Duplex Mismatch

Hi,

Try to change the all interfaces (to which Cisco ATA connected) duplex and speed settings to auto.

And is that Cisco ATA will support all type of duplex? (full, half, auto)


Please rate the helpfull posts.
Regards,
Naidu.

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