09-07-2018 06:42 AM - edited 03-03-2019 08:53 AM
I have configured 2 switches 3850 with port channel, if I enable UDLD port channel fails, it never established the connection. Even I bounce the port.
Ports will go to "erro-disable" state.
001036: *Sep 7 12:47:01.724 CET: %LINEPROTO-5-UPDOWN: Line protocol on Interface TenGigabitEthernet1/1/1, changed state to down
001037: *Sep 7 12:47:01.732 CET: %LINEPROTO-5-UPDOWN: Line protocol on Interface TenGigabitEthernet1/1/2, changed state to down
001038: *Sep 7 12:47:01.738 CET: %LINEPROTO-5-UPDOWN: Line protocol on Interface Port-channel1, changed state to down
001039: *Sep 7 12:47:02.731 CET: %LINK-3-UPDOWN: Interface TenGigabitEthernet1/1/1, changed state to down
During my investigation I found :
CSCva24225 - UDLD neighbor Failed to become bi-directional - 1
is there any solution on this ?
I am using IOS:
Switch Ports Model SW Version SW Image Mode
------ ----- ----- ---------- ---------- ----
* 1 16 WS-C3850-12XS 16.3.6 CAT3K_CAA-UNIVERSALK9 BUNDLE
09-07-2018 07:05 AM
Could you post the port-channel and physical switch port interface configs on both sides? It may help in figuring out what is going on.
Also, have you tried to take the interfaces out of the port channel and bring them up individually to see if both links are indeed operational and stable?
Thanks
09-07-2018 07:14 AM
SW 2:
xx-xx-xx-xx#sh run int t1/1/1
Building configuration...
Current configuration : 167 bytes
!
interface TenGigabitEthernet1/1/1
description
switchport trunk native vlan 195
switchport mode trunk
channel-group 1 mode desirable non-silent
end
xx-xx-xx-xx#sh run int t1/1/2
Building configuration...
Current configuration : 167 bytes
!
interface TenGigabitEthernet1/1/2
description
switchport trunk native vlan 195
switchport mode trunk
channel-group 1 mode desirable non-silent
end
xx-xx-xx-xx#sh run int po1
Building configuration...
Current configuration : 128 bytes
!
interface Port-channel1
description
switchport trunk native vlan 195
switchport mode trunk
SW1:
XX-XX-XX-XX#sh run int t1/1/1
Building configuration...
Current configuration : 166 bytes
!
interface TenGigabitEthernet1/1/1
description
switchport trunk native vlan 195
switchport mode trunk
channel-group 1 mode desirable non-silent
end
XX-XX-XX-XX#sh run int t1/1/2
Building configuration...
Current configuration : 166 bytes
!
interface TenGigabitEthernet1/1/2
description
switchport trunk native vlan 195
switchport mode trunk
channel-group 1 mode desirable non-silent
end
XX-XX-XX-XX#sh run int po1
Building configuration...
Current configuration : 126 bytes
!
interface Port-channel1
description
switchport trunk native vlan 195
switchport mode trunk
end
09-07-2018 06:16 PM - edited 09-07-2018 06:17 PM
can you post logs shows on other side ? is the same IOS version of other device.
post show udld output
09-08-2018 03:48 AM
Yes its same IOS recommended by CISCO :
Here is the out put :
SW 2:
sh udld t1/1/1
Interface Te1/1/1
---
Port enable administrative configuration setting: Follows device default
Port enable operational state: Enabled
Current bidirectional state: Unidirectional
Current operational state: Disabled port
Message interval: 7000 ms
Time out interval: 5000 ms
Port fast-hello configuration setting: Disabled
Port fast-hello interval: 0 ms
Port fast-hello operational state: Disabled
Neighbor fast-hello configuration setting: Disabled
Neighbor fast-hello interval: Unknown
No neighbor cache information stored
x-xx-xx-xx#sh udld t1/1/2
Interface Te1/1/2
---
Port enable administrative configuration setting: Follows device default
Port enable operational state: Enabled
Current bidirectional state: Unidirectional
Current operational state: Disabled port
Message interval: 7000 ms
Time out interval: 5000 ms
Port fast-hello configuration setting: Disabled
Port fast-hello interval: 0 ms
Port fast-hello operational state: Disabled
Neighbor fast-hello configuration setting: Disabled
Neighbor fast-hello interval: Unknown
No neighbor cache information stored
error logs:
000086: *Sep 8 12:36:43.559 CET: %LINK-3-UPDOWN: Interface TenGigabitEthernet1/1/2, changed state to up
000087: *Sep 8 12:36:47.004 CET: %LINEPROTO-5-UPDOWN: Line protocol on Interface TenGigabitEthernet1/1/2, changed state to up
000088: *Sep 8 12:36:47.164 CET: %UDLD-4-UDLD_PORT_DISABLED: UDLD disabled interface Te1/1/2, aggressive mode failure detected
000089: *Sep 8 12:36:47.164 CET: %PM-4-ERR_DISABLE: udld error detected on Te1/1/2, putting Te1/1/2 in err-disable state
12:46:44.426 CET: %LINEPROTO-5-UPDOWN: Line protocol on Interface TenGigabitEthernet1/1/1, changed state to up
000134: *Sep 8 12:46:44.655 CET: %UDLD-4-UDLD_PORT_DISABLED: UDLD disabled interface Te1/1/1, aggressive mode failure detected
000135: *Sep 8 12:46:44.655 CET: %PM-4-ERR_DISABLE: udld error detected on Te1/1/1, putting Te1/1/1 in err-disable state
000136: *Sep 8 12:46:45.657 CET: %LINEPROTO-5-UPDOWN: Line protocol on Interface TenGigabitEthernet1/1/1, changed state to down
h int status | i err-disabled
Te1/1/1 x-xx-xx-011 err-disabled 1 full 1000 1000BaseSX SFP
Te1/1/2 x-xx-xx-011 err-disabled 1 full 1000 1000BaseSX SFP
09-07-2018 06:06 PM
09-08-2018 03:58 AM
SW2 :
sh int status err
Port Name Status Reason Err-disabled Vlans
Te1/1/1 x-xx-xx-011 err-disabled udld
Te1/1/2 x-xx-xx-011 err-disabled udld
000133: *Sep 8 12:46:44.426 CET: %LINEPROTO-5-UPDOWN: Line protocol on Interface TenGigabitEthernet1/1/1, changed state to up
000134: *Sep 8 12:46:44.655 CET: %UDLD-4-UDLD_PORT_DISABLED: UDLD disabled interface Te1/1/1, aggressive mode failure detected
000135: *Sep 8 12:46:44.655 CET: %PM-4-ERR_DISABLE: udld error detected on Te1/1/1, putting Te1/1/1 in err-disable state
000136: *Sep 8 12:46:45.657 CET: %LINEPROTO-5-UPDOWN: Line protocol on Interface TenGigabitEthernet1/1/1, changed state to down
000137: *Sep 8 12:46:46.692 CET: %LINK-3-UPDOWN: Interface TenGigabitEthernet1/1/1, changed state to down
000138: *Sep 8 12:46:57.192 CET: %PM-4-ERR_RECOVER: Attempting to recover from udld err-disable state on Te1/1/2
000139: *Sep 8 12:47:02.378 CET: %LINK-3-UPDOWN: Interface TenGigabitEthernet1/1/2, changed state to up
000140: *Sep 8 12:47:05.816 CET: %LINEPROTO-5-UPDOWN: Line protocol on Interface TenGigabitEthernet1/1/2, changed state to up
000141: *Sep 8 12:47:06.054 CET: %UDLD-4-UDLD_PORT_DISABLED: UDLD disabled interface Te1/1/2, aggressive mode failure detected
000142: *Sep 8 12:47:06.054 CET: %PM-4-ERR_DISABLE: udld error detected on Te1/1/2, putting Te1/1/2 in err-disable state
000143: *Sep 8 12:47:07.055 CET: %LINEPROTO-5-UPDOWN: Line protocol on Interface TenGigabitEthernet1/1/2, changed state to down
000144: *Sep 8 12:47:08.091 CET: %LINK-3-UPDOWN: Interface TenGigabitEthernet1/1/2, changed state to down
SW1:
no err-disable in SW 1 port channels
If I disable "no udld en" in SW2 in global mode ports will come up
09-08-2018 04:57 AM
Do you have VLAN 195 in VLAN Database on both the switches.
show vlan
09-11-2018 05:36 AM
Yes its available in both switch
09-08-2018 05:24 AM
@Ashwin Jingade wrote:
000138: *Sep 8 12:46:57.192 CET: %PM-4-ERR_RECOVER: Attempting to recover from udld err-disable state on Te1/1/2
W-T-F!
Who's the "genius" who configured UDLD auto-recovery???? That person needs to be taken out the back and shot!
UDLD is designed to SAVE & PROTECT the network from network instability (think dynamic routing in a large network). Enabling auto-recovery means that the link pops back up. If there is a constant large OSPF or BGP topology changes this can cause the router or switch to crash. And I've seen this happen before.
If UDLD protection is enabled, take the auto-recovery OFF.
If auto-recovery is enabled, then take UDLD aggressive OFF.
DO NOT HAVE UDLD AGGRESSIVE and AUTO-RECOVERY ENABLED.
Do NOT have both.
09-11-2018 05:38 AM
It was configured same way.
As per your solution recommendation do I have to disable no udld aggressive on both switches ?
09-08-2018 05:30 AM
09-11-2018 05:49 AM
Note: I have disabled UDLD from global mode while taking this output
SW1:
sh int t1/1/1 controller
TenGigabitEthernet1/1/1 is up, line protocol is up (connected)
Hardware is Ten Gigabit Ethernet, address is 7486.0bbc.380d (bia 7486.0bbc.380d)
Description: R-UK-CH-011
MTU 1500 bytes, BW 1000000 Kbit/sec, DLY 10 usec,
reliability 255/255, txload 1/255, rxload 1/255
Encapsulation ARPA, loopback not set
Keepalive not set
Full-duplex, 1000Mb/s, link type is auto, media type is 1000BaseSX SFP
input flow-control is off, output flow-control is unsupported
ARP type: ARPA, ARP Timeout 04:00:00
Last input never, output 00:00:08, 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 0 bits/sec, 0 packets/sec
5 minute output rate 0 bits/sec, 0 packets/sec
518 packets input, 79784 bytes, 0 no buffer
Received 518 broadcasts (510 multicasts)
0 runts, 0 giants, 0 throttles
0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored
0 watchdog, 510 multicast, 0 pause input
0 input packets with dribble condition detected
421 packets output, 60448 bytes, 0 underruns
0 output errors, 0 collisions, 2 interface resets
6 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
Transmit TenGigabitEthernet1/1/1 Receive
60448 Total bytes 79784 Total bytes
146 Unicast frames 0 Unicast frames
9344 Unicast bytes 0 Unicast bytes
257 Multicast frames 510 Multicast frames
49884 Multicast bytes 79240 Multicast bytes
18 Broadcast frames 8 Broadcast frames
1220 Broadcast bytes 544 Broadcast bytes
0 System FCS error frames 0 IpgViolation frames
0 MacUnderrun frames 0 MacOverrun frames
0 Pause frames 0 Pause frames
0 Cos 0 Pause frames 0 Cos 0 Pause frames
0 Cos 1 Pause frames 0 Cos 1 Pause frames
0 Cos 2 Pause frames 0 Cos 2 Pause frames
0 Cos 3 Pause frames 0 Cos 3 Pause frames
0 Cos 4 Pause frames 0 Cos 4 Pause frames
0 Cos 5 Pause frames 0 Cos 5 Pause frames
0 Cos 6 Pause frames 0 Cos 6 Pause frames
0 Cos 7 Pause frames 0 Cos 7 Pause frames
0 Oam frames 0 OamProcessed frames
0 Oam frames 0 OamDropped frames
201 Minimum size frames 56 Minimum size frames
137 65 to 127 byte frames 377 65 to 127 byte frames
0 128 to 255 byte frames 0 128 to 255 byte frames
83 256 to 511 byte frames 85 256 to 511 byte frames
0 512 to 1023 byte frames 0 512 to 1023 byte frames
0 1024 to 1518 byte frames 0 1024 to 1518 byte frames
0 1519 to 2047 byte frames 0 1519 to 2047 byte frames
0 2048 to 4095 byte frames 0 2048 to 4095 byte frames
0 4096 to 8191 byte frames 0 4096 to 8191 byte frames
0 8192 to 16383 byte frames 0 8192 to 16383 byte frames
0 16384 to 32767 byte frame 0 16384 to 32767 byte frame
0 > 32768 byte frames 0 > 32768 byte frames
0 Late collision frames 0 SymbolErr frames
0 Excess Defer frames 0 Collision fragments
0 Good (1 coll) frames 0 ValidUnderSize frames
0 Good (>1 coll) frames 0 InvalidOverSize frames
0 Deferred frames 0 ValidOverSize frames
0 Gold frames dropped 0 FcsErr frames
0 Gold frames truncated
0 Gold frames successful
0 1 collision frames
0 2 collision frames
0 3 collision frames
0 4 collision frames
0 5 collision frames
0 6 collision frames
0 7 collision frames
0 8 collision frames
0 9 collision frames
0 10 collision frames
0 11 collision frames
0 12 collision frames
0 13 collision frames
0 14 collision frames
0 15 collision frames
0 Excess collision frames
LAST UPDATE 2000 msecs AGO
sh int t1/1/2 controller
TenGigabitEthernet1/1/2 is up, line protocol is up (connected)
Hardware is Ten Gigabit Ethernet, address is 7486.0bbc.380e (bia 7486.0bbc.380e)
Description: R-UK-CH-011
MTU 1500 bytes, BW 1000000 Kbit/sec, DLY 10 usec,
reliability 255/255, txload 1/255, rxload 1/255
Encapsulation ARPA, loopback not set
Keepalive not set
Full-duplex, 1000Mb/s, link type is auto, media type is 1000BaseSX SFP
input flow-control is off, output flow-control is unsupported
ARP type: ARPA, ARP Timeout 04:00:00
Last input never, output 00:00:05, 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 9000 bits/sec, 16 packets/sec
5 minute output rate 5000 bits/sec, 9 packets/sec
25204 packets input, 1840450 bytes, 0 no buffer
Received 25199 broadcasts (25151 multicasts)
0 runts, 0 giants, 0 throttles
0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored
0 watchdog, 25151 multicast, 0 pause input
0 input packets with dribble condition detected
13969 packets output, 1010296 bytes, 0 underruns
0 output errors, 0 collisions, 2 interface resets
5 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
Transmit TenGigabitEthernet1/1/2 Receive
1010296 Total bytes 1840450 Total bytes
155 Unicast frames 5 Unicast frames
9920 Unicast bytes 1151 Unicast bytes
13813 Multicast frames 25151 Multicast frames
1000308 Multicast bytes 1836043 Multicast bytes
1 Broadcast frames 48 Broadcast frames
68 Broadcast bytes 3256 Broadcast bytes
0 System FCS error frames 0 IpgViolation frames
0 MacUnderrun frames 0 MacOverrun frames
0 Pause frames 0 Pause frames
0 Cos 0 Pause frames 0 Cos 0 Pause frames
0 Cos 1 Pause frames 0 Cos 1 Pause frames
0 Cos 2 Pause frames 0 Cos 2 Pause frames
0 Cos 3 Pause frames 0 Cos 3 Pause frames
0 Cos 4 Pause frames 0 Cos 4 Pause frames
0 Cos 5 Pause frames 0 Cos 5 Pause frames
0 Cos 6 Pause frames 0 Cos 6 Pause frames
0 Cos 7 Pause frames 0 Cos 7 Pause frames
0 Oam frames 0 OamProcessed frames
0 Oam frames 0 OamDropped frames
965 Minimum size frames 72 Minimum size frames
12917 65 to 127 byte frames 25039 65 to 127 byte frames
0 128 to 255 byte frames 0 128 to 255 byte frames
86 256 to 511 byte frames 91 256 to 511 byte frames
1 512 to 1023 byte frames 2 512 to 1023 byte frames
0 1024 to 1518 byte frames 0 1024 to 1518 byte frames
0 1519 to 2047 byte frames 0 1519 to 2047 byte frames
0 2048 to 4095 byte frames 0 2048 to 4095 byte frames
0 4096 to 8191 byte frames 0 4096 to 8191 byte frames
0 8192 to 16383 byte frames 0 8192 to 16383 byte frames
0 16384 to 32767 byte frame 0 16384 to 32767 byte frame
0 > 32768 byte frames 0 > 32768 byte frames
0 Late collision frames 0 SymbolErr frames
0 Excess Defer frames 0 Collision fragments
0 Good (1 coll) frames 0 ValidUnderSize frames
0 Good (>1 coll) frames 0 InvalidOverSize frames
0 Deferred frames 0 ValidOverSize frames
0 Gold frames dropped 0 FcsErr frames
0 Gold frames truncated
0 Gold frames successful
0 1 collision frames
0 2 collision frames
0 3 collision frames
0 4 collision frames
0 5 collision frames
0 6 collision frames
0 7 collision frames
0 8 collision frames
0 9 collision frames
0 10 collision frames
0 11 collision frames
0 12 collision frames
0 13 collision frames
0 14 collision frames
0 15 collision frames
0 Excess collision frames
LAST UPDATE 212 msecs AGO
09-11-2018 07:42 AM
09-12-2018 12:01 AM
configured as a portchannel and Fiber cables are connected
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