UDLD issue

[ibrkic001]

Hello, we have Cisco Switch IE-3200 that was connected to Cisco 3550 switch .

In period about every 7 days there is a problem on port on Cisco 3550 switch ,where is connected IE-3200, UDLD disable port, port goes to err-disable state:

UDLD disabled interface Gi0/1, unidirectional link detected

When we try to recover port, there is no results. But, when we restart switch IE-3200 and recover port, the link is established. After some period from 5- 7 days, situation repeats, and again , after restarting switch link is ok.

Just to mention, switches are connected with fiber, we checked fiber, sfp , patch cables, and finally we replaced switch 3550 with Cisco 9200, and problem is the same.

Should we consider replacing switch IE3200, or try something else?

Best regards

[balaji.bandi]

The cause is likely to be hardware related, either due to a bad port, a bad cable, or a mis-configured cable.

Hope you have tried both the ends already replacing cable and optics

Now time to Look at the configuration, what is your UDLD configuraiton on both the sides ?

what kind of CPU Load on both the side.

what happends when you do shut and no shutdown, is this come up ?

it is worth to enable on global config - err-disable recovery cause udld  " only when you see there is no STP loops in the network).

post below outout :

sh int gi 0/1

sh run int gi 0/1

show run

show ver

[ibrkic001]

Hi, Balaji,

yes, we have tried to resolve the problem by replacing optics, but we were confused why is everything ok after restarting switch.

In CPU Load we do not see nothing unusual. We tried with command -err-disable recovery cause udld, but did not helped.

This is the output from IE-3200:

# show interf gigabitEthernet 1/1
GigabitEthernet1/1 is up, line protocol is up (connected)
Hardware is Gigabit Ethernet, address is d0ec.3558.bc61 (bia d0ec.3558.bc61)

MTU 1500 bytes, BW 1000000 Kbit/sec, DLY 10 usec,
reliability 255/255, txload 2/255, rxload 1/255
Encapsulation ARPA, loopback not set
Keepalive set (10 sec)
Full-duplex, 1000Mb/s, media type is 1000BaseLX
input flow-control is off, output flow-control is unsupported
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: 0/375/0/0 (size/max/drops/flushes); Total output drops: 0
Queueing strategy: fifo
Output queue: 0/40 (size/max)
5 minute input rate 250000 bits/sec, 457 packets/sec
5 minute output rate 9500000 bits/sec, 891 packets/sec
9669341 packets input, 667013295 bytes, 0 no buffer
Received 268898 broadcasts (261524 multicasts)
0 runts, 0 giants, 0 throttles
0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored
0 watchdog, 261524 multicast, 0 pause input
0 input packets with dribble condition detected
18376282 packets output, 25300635200 bytes, 0 underruns
0 output errors, 0 collisions, 2 interface resets
0 unknown protocol drops
0 babbles, 0 late collision, 0 deferred
0 lost carrier, 0 no carrier, 0 pause output
0 output buffer failures, 0 output buffers swapped out
---------------------------------------------------------------------
# show run interface gigabitEthernet 1/1
Building configuration...

Current configuration : 256 bytes
!
interface GigabitEthernet1/1
switchport access vlan 931
switchport trunk native vlan 931
switchport trunk allowed vlan 931,933
switchport mode dynamic desirable
-----------------------------------------------
#show ver
Cisco IOS XE Software, Version 16.12.01
Cisco IOS Software [Gibraltar], IE3x00 Switch Software (IE3x00-UNIVERSALK9-M), Version 16.12.1, RELEASE SOFTWARE (fc3)
Technical Support: http://www.cisco.com/techsupport
Copyright (c) 1986-2019 by Cisco Systems, Inc.
Compiled Tue 30-Jul-19 11:50 by mcpre

Technology Package License Information:

------------------------------------------------------------------------------
Technology-package Technology-package
Current Type Next reboot
------------------------------------------------------------------------------
network-essentials Smart License network-essentials
None Subscription Smart License None

Smart Licensing Status: UNREGISTERED/No Licenses in Use

cisco IE-3200-8T2S (ARM) processor (revision V03) with 899826K/6147K bytes of memory.
Processor board ID FOC2331V086
2 Virtual Ethernet interfaces
10 Gigabit Ethernet interfaces
32768K bytes of non-volatile configuration memory.
2025540K bytes of physical memory.
523264K bytes of crashinfo at crashinfo:.
1684480K bytes of Flash at flash:.
0K bytes of WebUI ODM Files at webui:.

Base Ethernet MAC Address : d0:ec:35:58:bc:60
Motherboard Assembly Number : 73-101446-09
Motherboard Serial Number : FOC23297196
Model Revision Number : V03
Motherboard Revision Number : 9
Model Number : IE-3200-8T2S
System Serial Number : FOC2331V086
System FPGA version : 0.81.2
CIP Serial Number : 0x3E58BC60
SKU Brand Name : Cisco

Configuration register is 0x102

-------------------------------------------------------------
Output from 9200:

#sh interfaces gigabitEthernet 1/1/1
GigabitEthernet1/1/1 is up, line protocol is up (connected)
Hardware is Gigabit Ethernet, address is 4ce1.76fb.5f19 (bia 4ce1.76fb.5f19)
MTU 1500 bytes, BW 1000000 Kbit/sec, DLY 10 usec,
reliability 255/255, txload 1/255, rxload 2/255
Encapsulation ARPA, loopback not set
Keepalive not set
Full-duplex, 1000Mb/s, link type is auto, media type is 1000BaseLX SFP
input flow-control is off, output flow-control is unsupported
ARP type: ARPA, ARP Timeout 04:00:00
Last input 00:00:12, output 00:00:00, output hang never
Last clearing of "show interface" counters never
Input queue: 0/2000/0/0 (size/max/drops/flushes); Total output drops: 0
Queueing strategy: fifo
Output queue: 0/40 (size/max)
5 minute input rate 9448000 bits/sec, 890 packets/sec
5 minute output rate 247000 bits/sec, 452 packets/sec
18900346 packets input, 25993622738 bytes, 0 no buffer
Received 25616 broadcasts (15485 multicasts)
0 runts, 0 giants, 0 throttles
0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored
0 watchdog, 15485 multicast, 0 pause input
0 input packets with dribble condition detected
9940211 packets output, 685510003 bytes, 0 underruns
0 output errors, 0 collisions, 5 interface resets
2 unknown protocol drops
0 babbles, 0 late collision, 0 deferred
0 lost carrier, 0 no carrier, 0 pause output
0 output buffer failures, 0 output buffers swapped out
----------------------------------------------------------------------
#show run interface gigabitEthernet 1/1/1
Building configuration...

Current configuration : 317 bytes
!
interface GigabitEthernet1/1/1
switchport access vlan 931
switchport trunk native vlan 931
switchport trunk allowed vlan 931-933
switchport mode dynamic desirable
logging event link-status
logging event bundle-status
----------------------------------------
# show ver
Cisco IOS XE Software, Version 16.09.04
Cisco IOS Software [Fuji], Catalyst L3 Switch Software (CAT9K_LITE_IOSXE), Version 16.9.4, RELEASE SOFTWARE (fc2)
Technical Support: http://www.cisco.com/techsupport
Copyright (c) 1986-2019 by Cisco Systems, Inc.
Compiled Thu 22-Aug-19 17:30 by mcpre

Technology Package License Information:

------------------------------------------------------------------------------
Technology-package Technology-package
Current Type Next reboot
------------------------------------------------------------------------------
network-essentials Smart License network-essentials
dna-essentials Subscription Smart License dna-essentials

Smart Licensing Status: REGISTERED/AUTHORIZED

cisco C9200L-24P-4G (ARM64) processor with 519008K/3071K bytes of memory.
Processor board ID JAE2403076F
2 Virtual Ethernet interfaces
28 Gigabit Ethernet interfaces
2048K bytes of non-volatile configuration memory.
1998948K bytes of physical memory.
819200K bytes of Crash Files at crashinfo:.
1941504K bytes of Flash at flash:.
0K bytes of WebUI ODM Files at webui:.

Base Ethernet MAC Address : 4c:e1:76:fb:5f:00
Motherboard Assembly Number : 73-18699-06
Motherboard Serial Number : JAE2403076F
Model Revision Number : G0
Motherboard Revision Number : A0
Model Number : C9200L-24P-4G
System Serial Number : JAE2403076F

Switch Ports Model SW Version SW Image Mode
------ ----- ----- ---------- ---------- ----
* 1 28 C9200L-24P-4G 16.9.4 CAT9K_LITE_IOSXE INSTALL

[marce1000]

  - I would also advice to use the latest recommended software releases on both platforms. Especially if some box currently has a relatively old version running.

 M.