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3550 port issue

sonal-patel
Level 1
Level 1

have a customer that every couple of weeks his fa/09-fa/12 ports have bounced – they are in a down/down state for no apparent reason. They are trunked and have IP phones off each one – as do the others.

here is part of his log:

Log Buffer (4096 bytes):

no longer detected on port Fa0/9, port set to untrusted.

000607: Feb 2 20:21:25.374: %LINK-3-UPDOWN: Interface FastEthernet0/10, changed state to down

000608: Feb 2 20:21:25.374: %TB-5-TRUST_DEVICE_LOST: cisco-phone no longer detected on port Fa0/10, port set to untrusted.

000609: Feb 2 20:21:25.390: %LINK-3-UPDOWN: Interface FastEthernet0/11, changed state to down

000610: Feb 2 20:21:25.390: %TB-5-TRUST_DEVICE_LOST: cisco-phone no longer detected on port Fa0/11, port set to untrusted.

000611: Feb 2 20:21:25.410: %LINK-3-UPDOWN: Interface FastEthernet0/12, changed state to down

000612: Feb 2 20:21:25.410: %TB-5-TRUST_DEVICE_LOST: cisco-phone no longer detected on port Fa0/12, port set to untrusted.

000613: Feb 2 21:18:23.587: %SYS-5-CONFIG_I: Configured from console by vty3 (172.24.104.9)

000614: Feb 2 21:19:24.593: %SYS-5-CONFIG_I: Configured from console by vty4 (172.24.104.9)

000615: Feb 2 21:25:33.416: %SYS-5-CONFIG_I: Configured from console by vty1 (172.24.104.9)

000616: Feb 2 21:29:24.888: %LINK-5-CHANGED: Interface FastEthernet0/9, changed state to administratively down

000617: Feb 2 21:29:31.192: %LINK-3-UPDOWN: Interface FastEthernet0/9, changed state to down

000618: Feb 2 21:29:35.328: %LINK-3-UPDOWN: Interface FastEthernet0/9, changed state to up

000619: Feb 2 21:29:37.340: %LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0/9, changed state to up

000620: Feb 2 21:29:45.213: %LINK-5-CHANGED: Interface FastEthernet0/10, changed state to administratively down

000621: Feb 2 21:29:48.681: %LINK-3-UPDOWN: Interface FastEthernet0/10, changed state to down

000622: Feb 2 21:29:48.837: %TB-5-TRUST_DEVICE_DETECTED: cisco-phone detected on port Fa0/9, port trust enabled.

000623: Feb 2 21:29:52.861: %LINK-3-UPDOWN: Interface FastEthernet0/10, changed state to up

any ideas as to what is causing this?

2 Replies 2

baileja
Level 1
Level 1

Is he using inline power? Tell him to take those ports from power inline autonegotiate to hardset.

how do you do this? It's either Auto or

Never. What is the command to hand-set this option?

Thanks

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