FastEthernet continual state change

andyscutt · ‎07-12-2011

I am having some issues with a 861W router connected to a cable modem. Traffic is passing fine but my SNMP monitoring tool is showing continual changes to the ifLastChage mib. Debug of interface states gives the following:

Jul 12 21:03:36.450: [IDB Fa4 UURUYY] CSTATE_REQ: Entry, requested state: U

Jul 12 21:03:36.450: [IDB Fa4 UURUYY] CSTATE_REQ: starting ctimer (2000)

Jul 12 21:03:36.450: [IDB Fa4 UURUYY] CSTATE_REQ: state assign

Jul 12 21:03:36.450: [IDB Fa4 UURUYY] LSTATE_REQ: Entry

Jul 12 21:03:36.450: [IDB Fa4 UURUYY] LSTATE_REQ: Exit

Jul 12 21:03:36.450: [IDB Fa4 UURUYY] CSTATE_REQ: Exit

Jul 12 21:03:38.451: [IDB Fa4 UURUYY] CSTATE_TMR: Entry

Jul 12 21:03:38.451: [IDB Fa4 UURUYY] CSTATE_TMR: netidb=Fa4, linestate: Y

Jul 12 21:03:38.451: [IDB Fa4 UURUYY] CSTATE_TMR: starting lineproto timer

Jul 12 21:03:38.451: [IDB Fa4 UURUYY] CSTATE_TMR: Exit

Jul 12 21:03:39.451: [IDB Fa4 UURUYY] LSTATE_TMR: Entry

Jul 12 21:03:39.451: [IDB Fa4 UURUYY] LSTATE_TMR: not spoofing, current state: Y

Jul 12 21:03:39.451: [IDB Fa4 UURUYY] LSTATE_TMR: informing line state transitions

Jul 12 21:03:39.451: [IDB Fa4 UURUYY] TRANS_ADJ: Entry

Jul 12 21:03:39.451: [IDB Fa4 UURUYY] TRANS_ADJ: Exit

Jul 12 21:03:39.451: [IDB Fa4 UURUYY] ROUTE_ADJ: Entry

Jul 12 21:03:39.451: [IDB Fa4 UURUYY] ROUTE_ADJ: Exit

Jul 12 21:03:39.451: [IDB Fa4 UURUYY] LSTATE_TMR: Exit

Jul 12 21:03:46.451: [IDB Fa4 UURUYY] CSTATE_REQ: Entry, requested state: U

Jul 12 21:03:46.451: [IDB Fa4 UURUYY] CSTATE_REQ: starting ctimer (2000)

Jul 12 21:03:46.451: [IDB Fa4 UURUYY] CSTATE_REQ: state assign

Jul 12 21:03:46.451: [IDB Fa4 UURUYY] LSTATE_REQ: Entry

Jul 12 21:03:46.451: [IDB Fa4 UURUYY] LSTATE_REQ: Exit

Jul 12 21:03:46.451: [IDB Fa4 UURUYY] CSTATE_REQ: Exit

Jul 12 21:03:48.451: [IDB Fa4 UURUYY] CSTATE_TMR: Entry

Jul 12 21:03:48.451: [IDB Fa4 UURUYY] CSTATE_TMR: netidb=Fa4, linestate: Y

Jul 12 21:03:48.451: [IDB Fa4 UURUYY] CSTATE_TMR: starting lineproto timer

Jul 12 21:03:48.451: [IDB Fa4 UURUYY] CSTATE_TMR: Exit

Jul 12 21:03:49.451: [IDB Fa4 UURUYY] LSTATE_TMR: Entry

Jul 12 21:03:49.451: [IDB Fa4 UURUYY] LSTATE_TMR: not spoofing, current state: Y

Jul 12 21:03:49.451: [IDB Fa4 UURUYY] LSTATE_TMR: informing line state transitions

Jul 12 21:03:49.451: [IDB Fa4 UURUYY] TRANS_ADJ: Entry

Jul 12 21:03:49.451: [IDB Fa4 UURUYY] TRANS_ADJ: Exit

Jul 12 21:03:49.451: [IDB Fa4 UURUYY] ROUTE_ADJ: Entry

Jul 12 21:03:49.451: [IDB Fa4 UURUYY] ROUTE_ADJ: Exit

The router is running 15.0(1)M6 and, other than this issue all else is fine.Interface config is:

interface FastEthernet4

description Outside_Interface

bandwidth 50000

ip ddns update hostname *.*.*

ip ddns update DynDNS host members.dyndns.org

ip address dhcp

no ip redirects

no ip unreachables

no ip proxy-arp

ip nat outside

ip virtual-reassembly

duplex full

speed 100

no cdp enable

Any help would be very welcome!

Peter Paluch · ‎07-12-2011

Andy,

Just a guess, but would the situation change if you removed the commands duplex full and speed 100 from your Fa4 interface, and left the interface autonegotiate both the speed and duplex?

Best regards,

Peter

andyscutt · ‎07-12-2011

Change made and still no difference.

I also swapped the cable out just in case, still the same.

Leo Laohoo · ‎07-12-2011

Can you post the output for the "sh int f4" please?

Have you tried changing the copper cable?

andyscutt · ‎07-12-2011

Here you go. The errors occured when I switched to hlf duplex to test a theory. Cable has been swapped with no change.

FastEthernet4 is up, line protocol is up

Hardware is PQII_PRO_UEC, address is 6400.f1ca.3c2c (bia 6400.f1ca.3c2c)

Description: Outside_Interface

Internet address is x.x.x.x

MTU 1500 bytes, BW 50000 Kbit/sec, DLY 100 usec,

reliability 255/255, txload 1/255, rxload 10/255

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

Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 16

Queueing strategy: fifo

Output queue: 0/40 (size/max)

5 minute input rate 2073000 bits/sec, 234 packets/sec

5 minute output rate 149000 bits/sec, 88 packets/sec

3020862 packets input, 3254412337 bytes

Received 2719 broadcasts, 60 runts, 0 giants, 0 throttles

60 input errors, 60 CRC, 0 frame, 0 overrun, 0 ignored

0 watchdog

0 input packets with dribble condition detected

1506125 packets output, 282578369 bytes, 0 underruns

814 output errors, 318 collisions, 8 interface resets

0 unknown protocol drops

0 babbles, 0 late collision, 810 deferred

0 lost carrier, 0 no carrier

0 output buffer failures, 0 output buffers swapped out

Leo Laohoo · ‎07-12-2011

Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 1660 input errors, 60 CRC, 0 frame, 0 overrun, 0 ignored

814 output errors, 318 collisions, 8 interface resets

The errors are odd. Also I forgot to ask you to clear the counters (clear counter f4) and how long has the router been up.

andyscutt · ‎07-12-2011

Hi

I clear counters after posting that last message, here is the current counter levels:

FastEthernet4 is up, line protocol is up

Hardware is PQII_PRO_UEC, address is 6400.f1ca.3c2c (bia 6400.f1ca.3c2c)

Description: Outside_Interface

Internet address is x.x.x.x

MTU 1500 bytes, BW 50000 Kbit/sec, DLY 100 usec,

reliability 255/255, txload 1/255, rxload 10/255

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 00:39:06

Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 0

Queueing strategy: fifo

Output queue: 0/40 (size/max)

5 minute input rate 2077000 bits/sec, 237 packets/sec

5 minute output rate 153000 bits/sec, 103 packets/sec

527049 packets input, 585852454 bytes

Received 295 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

224818 packets output, 46422216 bytes, 0 underruns

0 output errors, 0 collisions, 0 interface resets

0 unknown protocol drops

0 babbles, 0 late collision, 0 deferred

0 lost carrier, 0 no carrier

0 output buffer failures, 0 output buffers swapped out

Router has been up for around 6 hrs

Thanks

Peter Paluch · ‎07-12-2011

Andy,

Can you perhaps swap the cables leading to ports Fa3 and Fa4 (along with swapping the port configurations if necessary) and see if the problem remains or moves to Fa3? At this point I would like to find out whether we are dealing with an issue with the port hardware, or whether the problem is indeed related to the cabling.

Best regards,

Peter

andyscutt · ‎07-13-2011

Sadly I can't - FastEth 0 to 3 are switchports - its an 861W .

I am going to try an IOS upgrade today and see if that helps but I am running out of ideas.