03-30-2009 02:04 PM - edited 03-15-2019 05:11 PM
Why do I get this error message on one of my switches? When it happens it knocks the port out anywhere from a few minutes to a few hours. Here is the config for the port:
switchport access vlan 50
switchport trunk encapsulation dot1q
switchport trunk native vlan 50
switchport mode trunk
switchport voice vlan 20
srr-queue bandwidth share 10 10 60 20
srr-queue bandwidth shape 10 0 0 0
mls qos trust device cisco-phone
mls qos trust cos
auto qos voip cisco-phone
spanning-tree portfast
spanning-tree guard root
mark gibson
04-04-2009 08:03 PM
Error Message seems SWITCH_QOS_TB-5-TRUST_DEVICE_LOST: [char] no longer detected on port
[char], port set to untrusted
Explanation : The system lost contact with a trusted device and changed the trust state for the interface to untrusted.
Recommended Action : This is an informational message only. No action is required.
04-05-2009 10:35 AM
I found that and would accept it, but when I get this error the port is shuts down and either comes back up quickly or will stay down until I either do a shut no shut or unplug and replug the device back in.
04-24-2016 12:22 PM
Has anybody found a solution to this issue.
I'm experiencing with Cisco IOS-XE 3850 software running the latest IOS release 03.06.04.E
Are there debugging commands that can pinpoint the issue.
Thanks in advance.
Dennis
05-23-2016 01:00 PM
Hi Dennis - We didn't get to the bottom of it, and in the end our users complained that much we had to replace all the 7942 phones with 7821 models. This stopped the issue occurring but we never got to the root cause!
Fortunately we didn't have many phones to replace :)
04-05-2009 03:59 AM
by the way
i see you have your port assigned to vlan 50
and then you have switchport mode trunk
why you did it like this
just rmove the mode trunk no reason for it here
01-19-2014 11:37 PM
we are facing the issue with IP phones and they lost connectvity and start upgrading.
found some errors on the switch logs,
TB-5-TRUST_DEVICE_LOST: cisco-phone no longer detected on port Gi7/2, operational port trust state is now untrusted.
Jan 17 15:03:05: %SWITCH_QOS_TB-5-TRUST_DEVICE_LOST: cisco-phone no longer detected on port Gi7/11, operational port trust state is now untrusted.
Jan 17 15:06:44: %SWITCH_QOS_TB-5-TRUST_DEVICE_DETECTED: cisco-phone detected on port Gi7/42, port's configured trust state is now operational.
Jan 17 15:08:51: %SWITCH_QOS_TB-5-TRUST_DEVICE_DETECTED: cisco-phone detected on port Gi7/23, port's configured trust state is now operational.
Jan 17 15:33:57: %SWITCH_QOS_TB-5-TRUST_DEVICE_DETECTED: cisco-phone detected on port Gi7/10, port's configured trust state is now operational.
Jan 17 15:39:19: %SWITCH_QOS_TB-5-TRUST_DEVICE_DETECTED: cisco-phone detected on port Gi7/9, port's configured trust state is now operational.
Jan 17 15:41:20: %SWITCH_QOS_TB-5-TRUST_DEVICE_DETECTED: cisco-phone detected on port Gi7/13, port's configured trust state is now operational.
Jan 17 15:41:29: %SWITCH_QOS_TB-5-TRUST_DEVICE_DETECTED: cisco-phone detected on port Gi7/7, port's configured trust state is now operational.
Jan 17 15:50:59: %SWITCH_QOS_TB-5-TRUST_DEVICE_DETECTED: cisco-phone detected on port Gi7/30, port's configured trust state is now operational.
Jan 17 15:51:34: %SWITCH_QOS_TB-5-TRUST_DEVICE_DETECTED: cisco-phone detected on port Gi7/37, port's configured trust state is now operational.
Jan 18 02:01:31: %SYS-5-CONFIG_I: Configured from 10.14.2.10 by snmp
Jan 18 05:35:08: %SWITCH_QOS_TB-5-TRUST_DEVICE_LOST: cisco-phone no longer detected on port Gi8/15, operational port trust state is now untrusted.
Jan 18 05:36:21: %SWITCH_QOS_TB-5-TRUST_DEVICE_DETECTED: cisco-phone detected on port Gi8/15, port's configured trust state is now operational.
Jan 18 07:31:38: %SWITCH_QOS_TB-5-TRUST_DEVICE_LOST: cisco-phone no longer detected on port Gi1/45, operational port trust state is now untrusted.
Jan 18 07:33:01: %SWITCH_QOS_TB-5-TRUST_DEVICE_LOST: cisco-phone no longer detected on port Gi1/26, operational port trust state is now untrusted.
Jan 18 07:34:58: %SWITCH_QOS_TB-5-TRUST_DEVICE_LOST: cisco-phone no longer detected on port Gi9/7, operational port trust state is now untrusted.
Jan 18 07:35:37: %SWITCH_QOS_TB-5-TRUST_DEVICE_DETECTED: cisco-phone detected on port Gi7/11, port's configured trust state is now operational.
Jan 18 07:40:27: %SWITCH_QOS_TB-5-TRUST_DEVICE_DETECTED: cisco-phone detected on port Gi1/45, port's configured trust state is now operational.
Jan 18 07:45:41: %SWITCH_QOS_TB-5-TRUST_DEVICE_DETECTED: cisco-phone detected on port Gi1/43, port's configured trust state is now operational.
Jan 18 07:51:43: %SWITCH_QOS_TB-5-TRUST_DEVICE_LOST: cisco-phone no longer detected on port Gi3/3, operational port trust state is now untrusted.
Jan 18 07:51:58: %SWITCH_QOS_TB-5-TRUST_DEVICE_LOST: cisco-phone no longer detected on port Gi2/48, operational port trust state is now untrusted.
Jan 18 07:55:48: %SWITCH_QOS_TB-5-TRUST_DEVICE_DETECTED: cisco-phone detected on port Gi2/48, port's configured trust state is now operational.
Jan 18 07:56:48: %SWITCH_QOS_TB-5-TRUST_DEVICE_DETECTED: cisco-phone detected on port Gi3/3, port's configured trust state is now operational.
Jan 18 09:04:33: %SWITCH_QOS_TB-5-TRUST_DEVICE_LOST: cisco-phone no longer detected on port Gi3/3, operational port trust state is now untrusted.
Jan 18 09:09:09: %SWITCH_QOS_TB-5-TRUST_DEVICE_LOST: cisco-phone no longer detected on port Gi1/45, operational port trust state is now untrusted.
Jan 18 10:16:21: %SWITCH_QOS_TB-5-TRUST_DEVICE_LOST: cisco-phone no longer detected on port Gi1/1, operational port trust state is now untrusted.
Jan 18 10:17:43: %SWITCH_QOS_TB-5-TRUST_DEVICE_DETECTED: cisco-phone detected on port Gi1/1, port's configured trust state is now operational.
Jan 20 03:34:13: %SWITCH_QOS_TB-5-TRUST_DEVICE_LOST: cisco-phone no longer detected on port Gi7/9, operational port trust state is now untrusted.
Jan 20 03:35:17: %SWITCH_QOS_TB-5-TRUST_DEVICE_DETECTED: cisco-phone detected on port Gi7/9, port's configured trust state is now operational.
show run int gig8/15
Building configuration...
Current configuration : 236 bytes
!
interface GigabitEthernet8/15
switchport access vlan 1132
switchport mode access
switchport voice vlan 1162
qos trust cos
qos trust device cisco-phone
tx-queue 3
priority high
shape percent 33
spanning-tree portfast
end
Need help.
02-06-2014 02:20 AM
Hi
I have the same problem. Do you have a solution?
Do you have tried to put a power injector behind the IP IPhone and test if the problem still appears ?
What are the tests that were performed for the moment?
Thanks in advanced for your help.
12-12-2014 05:02 AM
Hi - Did you ever get a solution to this problem as we're experiencing the exact same issues running the same version of 3750 and 7942 code?
If you solved the problem I'd be interested to hear what you did.
Thx.
01-25-2019 10:23 AM
Hi,
I ran into the same problem what it turns out to be was a bad cable from the Esxi nic side. On the Esxi under the event tab it was showing flapping. The nic was configured as active/standby and once I switched the standby to active it started working.
Thanks.
Abye
09-03-2019 08:33 AM
We have the same issue, only difference is that we experience this with Cisco ATA191 that we are using for faxes. These have issue where they are dropping from the network and we have to power cycle them to reestablish their connection.
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