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%LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0/0

I have this alert : %LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0/0, changed state to down.

It's comming at different time and not regularly. I have test it with a 2620 and 2620XM. It's the same problem. We have test it with 2 version 12.2(17a) on 2620XM and 12.2(3b) see below

Cisco Internetwork Operating System Software

IOS (tm) C2600 Software (C2600-I-M), Version 12.2(3b), RELEASE SOFTWARE (fc1)

Copyright (c) 1986-2001 by cisco Systems, Inc.

Compiled Thu 25-Oct-01 22:38 by pwade

Image text-base: 0x80008088, data-base: 0x8097C0FC

ROM: System Bootstrap, Version 12.2(6r), RELEASE SOFTWARE (fc1)

Gaci2620 uptime is 5 hours, 11 minutes

System returned to ROM by power-on

System restarted at 10:33:02 France Wed Jul 9 2003

System image file is "flash:c2600-i-mz.122-3b.bin"

cisco 2620 (MPC860) processor (revision 0x00) with 26624K/6144K bytes of memory.

Processor board ID JAD06210LTZ (1527763399)

M860 processor: part number 0, mask 49

Channelized E1, Version 1.0.

Bridging software.

X.25 software, Version 3.0.0.

Primary Rate ISDN software, Version 1.1.

1 FastEthernet/IEEE 802.3 interface(s)

31 Serial network interface(s)

1 Channelized E1/PRI port(s)

32K bytes of non-volatile configuration memory.

8192K bytes of processor board System flash (Read/Write)

Configuration register is 0x0 (will be 0x2102 at next reload)

Do you think it's a problem on HSRP ?

Configuration below

interface FastEthernet0/0

ip address X.X.X.X

speed 100


no cdp enable

standby ip

standby priority 200

standby preempt

bridge-group 6


Re: %LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet

More than likely you have an issue with hardware , can you paste in a sh int f0/0 from the router and a sh port or sh interface & sh ver from the switch it is connected to

New Member

Re: %LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet

Counters Table of the Switch(not cisco)

Drop Events 0

Collisions 1

Broadcasts 570433516

Multicasts 162657941

CRC/Alignment Errors 2

Undersize Packets 0

Oversize Packets 0

Fragments 52769

Jabbers 0

Total Packets 1268268752

Total Octets 2288901892

64 Octets 625565685

65-127 299739035

128-255 235663343

256-511 50669245

512-1023 16118860

1024-1518 40459815

Gaci2620#sh int f 0/0

FastEthernet0/0 is up, line protocol is up

Hardware is AmdFE, address is 0009.b7f4.9a00 (bia 0009.b7f4.9a00)

Internet address is X.X.X.X/16

MTU 1500 bytes, BW 100000 Kbit, DLY 100 usec,

reliability 255/255, txload 1/255, rxload 1/255

Encapsulation ARPA, loopback not set

Keepalive set (10 sec)

Full-duplex, 100Mb/s, 100BaseTX/FX

ARP type: ARPA, ARP Timeout 04:00:00

Last input 00:00:00, output 00:00:00, output hang never

Last clearing of "show interface" counters never

Queueing strategy: fifo

Output queue 0/40, 0 drops; input queue 0/75, 31 drops

5 minute input rate 19000 bits/sec, 28 packets/sec

5 minute output rate 2000 bits/sec, 2 packets/sec

573534 packets input, 47068603 bytes

Received 517133 broadcasts, 0 runts, 0 giants, 0 throttles

0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored

0 watchdog

0 input packets with dribble condition detected

63198 packets output, 8779459 bytes, 0 underruns(0/0/0)

0 output errors, 0 collisions, 6 interface resets

0 babbles, 0 late collision, 0 deferred

0 lost carrier, 0 no carrier

0 output buffer failures, 0 output buffers swapped out


I have the same architecture with router 3640 and I use straight cable, but for 2620 or 2620XM it's neccessary to use Cross cable. Strange No ?


Re: %LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet

Is there any way to verify if the directly connected switch is losing power ? This would cause the FE interface to bounce .

New Member

Re: %LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet

Name 6H303-48


Slot No. 6

Serial No. 01470002050F

Firmware Rev 05.02.03

BOOT Rev 03.03.01

Operation Mode 802.1Q Switching

System Descr Enterasys Networks 6H303-48 Rev 05.02.03 01/11/02--13:37 ofc

System Uptime 248 days, 13:13:56

The port was previously use by router 7507 for more 5fyears and there no problem on it.

What do you think about HSRP disturb ?


Re: %LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet

I do not think it is a problem with HSRP , htis would not cause protocol to bounce , is there any logs on the directly connected switch , Can you see if the port on that switch is losing carrier ? Another possiblility is the FE is getting hammered with traffic and this is causing the protocole to drop, you could be having a spanning tree loop or a broadcast storm that is causing the protocol to drop