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New Member

Error logs on 1760 router

Hi All,

I am getting the below error logs in my one of my router 1760, i found in some blogs that if no cable connected in WIC then the router is reporting the following fault on the console line and it happens every 1 minute like the device is being polled but doesn't respond.

But here cables were connected into Serial and Ethernet interfaces, still i am getting the below errors.

Is anybody experinced with this problem, can someone help me please.

Aug 14 05:30:04: %PQUICC_ETHER-1-LOSTCARR: Unit 0, lost carrier. Transceiver problem?

Aug 14 05:31:04: %PQUICC_ETHER-1-LOSTCARR: Unit 0, lost carrier. Transceiver problem?

Aug 14 05:32:04: %PQUICC_ETHER-1-LOSTCARR: Unit 0, lost carrier. Transceiver problem?

Aug 14 05:33:04: %PQUICC_ETHER-1-LOSTCARR: Unit 0, lost carrier. Transceiver problem?

Aug 14 05:34:04: %PQUICC_ETHER-1-LOSTCARR: Unit 0, lost carrier. Transceiver problem?

Aug 14 05:35:04: %PQUICC_ETHER-1-LOSTCARR: Unit 0, lost carrier. Transceiver problem?

Aug 14 05:36:04: %PQUICC_ETHER-1-LOSTCARR: Unit 0, lost carrier. Transceiver problem?

Aug 14 05:37:04: %PQUICC_ETHER-1-LOSTCARR: Unit 0, lost carrier. Transceiver problem?

Aug 14 05:38:04: %PQUICC_ETHER-1-LOSTCARR: Unit 0, lost carrier. Transceiver problem?

Aug 14 05:39:04: %PQUICC_ETHER-1-LOSTCARR: Unit 0, lost carrier. Transceiver problem?

Aug 14 05:40:04: %PQUICC_ETHER-1-LOSTCARR: Unit 0, lost carrier. Transceiver problem?

#x

Interface IP-Address OK? Method Status Prot ocol

FastEthernet0/0 10.xx.xx.xx YES NVRAM up up

Serial0/0 unassigned YES NVRAM up up

Serial0/0.22 172.20.x.xxx YES NVRAM up up

Ethernet1/0 10.xx.xxx.x YES NVRAM up down

Loopback0 172.20.xxx.xxx YES NVRAM up up

#sh ver

Cisco Internetwork Operating System Software

IOS (tm) C1700 Software (C1700-IPBASE-M), Version 12.3(6b), RELEASE SOFTWARE (fc1)

Copyright (c) 1986-2004 by cisco Systems, Inc.

Compiled Thu 20-May-04 00:20 by dchih

Image text-base: 0x80008120, data-base: 0x80C73B38

ROM: System Bootstrap, Version 12.2(7r)XM2, RELEASE SOFTWARE (fc1)

CE-NUK-RG uptime is 38 weeks, 6 days, 5 hours, 36 minutes

System returned to ROM by power-on

System restarted at 00:33:21 UTC Sat Nov 15 2008

System image file is "flash:c1700-ipbase-mz.123-6b.bin"

cisco 1760 (MPC860P) processor (revision 0x500) with 55597K/9939K bytes of memory.

Processor board ID FOC08202N33 (114859209), with hardware revision 0000

MPC860P processor: part number 5, mask 2

Bridging software.

X.25 software, Version 3.0.0.

1 Ethernet/IEEE 802.3 interface(s)

1 FastEthernet/IEEE 802.3 interface(s)

1 Serial(sync/async) network interface(s)

32K bytes of non-volatile configuration memory.

32768K bytes of processor board System flash (Read/Write)

Configuration register is 0x2102

Regards,

Naidu.

3 REPLIES
New Member

Re: Error logs on 1760 router

By the look of your "sh ip int bri" it is for the Eth1/0 interface not your serial.

What's plugged into the other end of that link? Have you checked it is the correct encapsulation? eg if it is a trunk, are both sides configured to be a trunk (and also both isl or dot1q)?

If it is going to a switch have you checked port security? (it may have autorecover set for 1 min which is why it keeps flapping).....

Could also be a break in the cable which causes it to be unidirectional and UDLD may be brinking it down?

New Member

You may also check duplex

You may also check duplex settings of the Ethernet interface.

At times changing the duplex mode from half-duplex to full duplex solves the problem.

 

Re: Error logs on 1760 router

%PQUICC_ETHER-1-LOSTCARR : Unit [dec], lost carrier. Transceiver problem?

Explanation The Ethernet 10BASE-T cable is unplugged.

Recommended Action Reconnect the 10BASE-T Ethernet cable

You can see in your show ip int br that e1/0 is up/down, that is the issue.

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