Brocade ICX 7450 one LAG interface up and down issue

[pradeep_sonawne]

Hi experts,

we have brocade ICX 7450 switches, using for Core and distribution, core and distribution are connected to each other by LAG.
one of the distribution's LAG interface port getting up and down continuously. i have checked there no any cable issue, no CRC errors on both interface , even i enabled optic monitoring on distribution's interface eth1/2/1 to check if there any optic issue, but that also ok.

i unable fix the issue, need your help to  fix the issue

Configuration as below 
-------------------------------------------------------------
Core Switch

lag 4WH dynamic id 4
 ports ethe 1/3/4 ethe 2/3/4 
 port-name "##Connected to 4WH DIST eth 1/2/2##" ethernet 1/3/4
 port-name ###Downlink_To_DIST### ethernet 2/3/4
-------------------------------------------------------------
Distribution switch

lag 4WH dynamic id 1
 ports ethe 1/2/1 to 1/2/2 
 port-name ###Uplink_to_Access_SW### ethernet 1/2/1
 port-name ##Connected_to_5.1_CoreSwitch_onPort_1/3/4### ethernet 1/2/2
--------------------------------------------------------------


Log on distribution

Fri Feb 22 04:23:55 2019;10.12.5.16; <14> Feb 22 04:23:56 WL_P1_D4-4WH-FA_L3-B7450_5.16 System: Interface ethernet 1/2/1, state down 
Fri Feb 22 04:24:00 2019;10.12.5.16; <14> Feb 22 04:24:01 WL_P1_D4-4WH-FA_L3-B7450_5.16 System: Interface ethernet 1/2/1, state up 
Fri Feb 22 04:24:00 2019;10.12.5.16; <14> Feb 22 04:24:01 WL_P1_D4-4WH-FA_L3-B7450_5.16 System: Interface ethernet 1/2/1, state down 
Fri Feb 22 04:24:08 2019;10.12.5.16; <14> Feb 22 04:24:09 WL_P1_D4-4WH-FA_L3-B7450_5.16 System: Interface ethernet 1/2/1, state up 
Fri Feb 22 04:24:09 2019;10.12.5.16; <14> Feb 22 04:24:10 WL_P1_D4-4WH-FA_L3-B7450_5.16 System: Interface ethernet 1/2/1, state down 
Fri Feb 22 04:24:27 2019;10.12.5.16; <14> Feb 22 04:24:28 WL_P1_D4-4WH-FA_L3-B7450_5.16 System: Interface ethernet 1/2/1, state up 
Fri Feb 22 04:24:28 2019;10.12.5.16; <14> Feb 22 04:24:29 WL_P1_D4-4WH-FA_L3-B7450_5.16 System: Interface ethernet 1/2/1, state down 
Fri Feb 22 04:27:46 2019;10.12.5.16; <14> Feb 22 04:27:46 WL_P1_D4-4WH-FA_L3-B7450_5.16 System: Interface ethernet 1/2/1, state up 
Fri Feb 22 04:27:46 2019;10.12.5.16; <14> Feb 22 04:27:47 WL_P1_D4-4WH-FA_L3-B7450_5.16 System: Interface ethernet 1/2/1, state down 
Fri Feb 22 04:27:47 2019;10.12.5.16; <14> Feb 22 04:27:48 WL_P1_D4-4WH-FA_L3-B7450_5.16 System: Interface ethernet 1/2/1, state up 
Fri Feb 22 04:27:48 2019;10.12.5.16; <14> Feb 22 04:27:49 WL_P1_D4-4WH-FA_L3-B7450_5.16 System: Interface ethernet 1/2/1, state down 
Fri Feb 22 04:27:48 2019;10.12.5.16; <14> Feb 22 04:27:49 WL_P1_D4-4WH-FA_L3-B7450_5.16 System: Interface ethernet 1/2/1, state up 



Note : this issue suddenly started otherwise everything was good.

OS ver on both switches : ver 08.0.70bT213

Thanks
 



 

[netwizz]

I do not see why it just started.  I would try different optics or different cables, a restart, or a firmware change.

In our environment, I have maybe 15 LAGs coming off of two stacked 7450-48F units to various 7150-48P stacks at the edge.

Thus far everything has been rock solid.

[hashim_bharooc1]

Hi Pradeep,

Sorry for the problem you are having. 

Do you have syslog servers and if you see anything in the log before the port started to bounce?

Please provide me the history:
When did the issue occur?
was it working fine before?
Was any changes made recently to the config?
Was the code upgraded?

Please get outputs from both side for the bouncing ports in question:
skip
show lag id
show int e 1/2/1  (1/3/4 on the other switch)
show interface int e 1/2/1 | i line | utilization (3 times)
show stat e 1/2/1 (2 times 30 seconds apart)
show sysmon count all 
show optic 1/2/1
show media e 1/2/1
dm statistics 
show lag brief
show log 
page
Hope this helps.
Regards
Hashim

[pradeep_sonawne]

Hi Sir,
Thanks for response and sorry for late as i was on leave.

the answer of questions as below
 
Do you have syslog servers and if you see anything in the log before the port started to bounce?

* i have SYSLOG svr but did not seen anything before the port started bounce.

Please provide me the history:

When did the issue occur?
* a couple of days back

was it working fine before?
* yes its was working fine before.

Was any changes made recently to the config?
* No 
Was the code upgraded?
*No
-------------------------------------------------------------------------------------
Core switch port log as below   ethernet 1/3/4

SSH@BAL_Waluj_CORE_A_B7450# sh int ethernet 1/3/4
10GigabitEthernet1/3/4 is up, line protocol is up
  Port up for 267 day(s) 4 hour(s) 59 minute(s) 24 second(s)
  Hardware is 10GigabitEthernet, address is cc4e.24f3.29c8 (bia cc4e.24f3.29e8)
  Configured speed 10Gbit, actual 10Gbit, configured duplex fdx, actual fdx
  Member of 26 L2 VLANs, port is dual mode in Vlan 1, port state is FORWARDING
  BPDU guard is Disabled, ROOT protect is Disabled, Designated protect is Disabled
  Link Error Dampening is Disabled
  STP configured to ON, priority is level0, mac-learning is enabled
  Openflow is Disabled, Openflow Hybrid mode is Disabled,  Flow Control is config enabled, oper enabled, negotiation disabled
  Mirror disabled, Monitor disabled
  Mac-notification is disabled
  Member of active trunk ports 1/3/4,2/3/4,lg4, Lag Interface is lg4
  Member of configured trunk ports 1/3/4,2/3/4,lg4, Lag Interface is lg4
  Port name is ##Connected to 4WH DIST eth 1/2/2##
  IPG XGMII 96 bits-time
  MTU 1500 bytes, encapsulation ethernet
  MMU Mode is Store-and-forward
  300 second input rate: 25892112 bits/sec, 5612 packets/sec, 0.26% utilization
  300 second output rate: 71470232 bits/sec, 12614 packets/sec, 0.72% utilization
  145681062117 packets input, 61359496656095 bytes, 0 no buffer
  Received 1553623403 broadcasts, 769352320 multicasts, 143357932588 unicasts
  0 input errors, 0 CRC, 0 frame, 0 ignored
  0 runts, 0 giants
  278968074848 packets output, 260891128948432 bytes, 0 underruns
  Transmitted 33300940135 broadcasts, 719272619 multicasts, 244947858465 unicasts
  0 output errors, 0 collisions
  Relay Agent Information option: Disabled
  Protected: No
  MAC Port Security: Disabled

UC Egress queues:
Queue counters    Queued packets    Dropped Packets
         0        244590734829                   0
         1                   0                   0
         2                 597                   0
         3                   0                   0
         4            94770344                   0
         5            23453061                   0
         6              197593                   0
         7           435825989                   0


MC Egress queues:
Queue counters    Queued packets    Dropped Packets
         0          8777756448                   0
         1         24301406374                   0
         2           209846790                   0
         3           534080516                   0

SSH@BAL_Waluj_CORE_A_B7450#

----------------------------------------------------------------------------------------------------------------------------

Distribution's swith output as below

=~=~=~=~=~=~=~=~=~=~=~= PuTTY log 2019.02.25 11:04:56 =~=~=~=~=~=~=~=~=~=~=~=
ski
  skip-page-display       Enable continuous display
SSH@WL_P1_D4-4WH-FA_L3-B7450_5.16#skip-page-display 
Disable page display mode
SSH@WL_P1_D4-4WH-FA_L3-B7450_5.16#
SSH@WL_P1_D4-4WH-FA_L3-B7450_5.16#sh lag id 1
Total number of LAGs:          2
Total number of deployed LAGs: 2
Total number of trunks created:2 (254 available)
LACP System Priority / ID:     1 / 609c.9f2e.67e0
LACP Long timeout:             120, default: 120
LACP Short timeout:            3, default: 3
=== LAG "4WH" ID 1 (dynamic Deployed) ===
LAG Configuration:
   Ports:         e 1/2/1 to 1/2/2 
   Port Count:    2
   Lag Interface: lg1
   Trunk Type:    hash-based
   LACP Key:      20001
Deployment: HW Trunk ID 1
Port       Link    State   Dupl Speed Trunk Tag Pvid Pri MAC             Name
1/2/1      Up      Forward Full 10G   1     Yes 1    0   609c.9f2e.67e0  ###Uplink_to_Ac
1/2/2      Up      Forward Full 10G   1     Yes 1    0   609c.9f2e.67e0  ##Connected_to_
Port       [Sys P] [Port P] [ Key ] [Act][Tio][Agg][Syn][Col][Dis][Def][Exp][Ope]
1/2/1           1        1   20001   Yes   L   Agg  Syn  Col  Dis  No   No   Ope
1/2/2           1        1   20001   Yes   L   Agg  Syn  Col  Dis  No   No   Ope
 Partner Info and PDU Statistics 
Port          Partner         Partner     LACP      LACP     
             System ID         Key     Rx Count  Tx Count  
1/2/1    1-cc4e.24f3.29c8    20004   768334    767477
1/2/2    1-cc4e.24f3.29c8    20004   766982    765099
SSH@WL_P1_D4-4WH-FA_L3-B7450_5.16#sh int ethernet 1/2/1
10GigabitEthernet1/2/1 is up, line protocol is up 
  Port up for 12 hour(s) 16 minute(s) 34 second(s) 
  Hardware is 10GigabitEthernet, address is 609c.9f2e.67e0 (bia 609c.9f2e.6811)
  Configured speed 10Gbit, actual 10Gbit, configured duplex fdx, actual fdx
  Member of 18 L2 VLANs, port is dual mode in Vlan 1, port state is FORWARDING
  BPDU guard is Disabled, ROOT protect is Disabled, Designated protect is Disabled
  Link Error Dampening is Disabled
  STP configured to ON, priority is level0, mac-learning is enabled
  Openflow is Disabled, Openflow Hybrid mode is Disabled,  Flow Control is config enabled, oper enabled, negotiation disabled
  Mirror disabled, Monitor disabled
  Mac-notification is disabled
  Member of active trunk ports 1/2/1,1/2/2,lg1, Lag Interface is lg1
  Member of configured trunk ports 1/2/1,1/2/2,lg1, Lag Interface is lg1
  Port name is ###Uplink_to_Access_SW###
  IPG XGMII 96 bits-time
  MTU 1500 bytes, encapsulation ethernet
  MMU Mode is Store-and-forward
  300 second input rate: 45468672 bits/sec, 6469 packets/sec, 0.45% utilization
  300 second output rate: 21496144 bits/sec, 5107 packets/sec, 0.21% utilization
  49883508439 packets input, 44718202085201 bytes, 0 no buffer
  Received 5303704819 broadcasts, 104174642 multicasts, 44474430380 unicasts
  5 input errors, 5 CRC, 0 frame, 0 ignored
  0 runts, 0 giants
  30046964721 packets output, 16557533451954 bytes, 0 underruns
  Transmitted 143436653 broadcasts, 87046206 multicasts, 29816481862 unicasts
  0 output errors, 0 collisions
  Relay Agent Information option: Disabled
  Protected: No
  MAC Port Security: Disabled

UC Egress queues:
Queue counters    Queued packets    Dropped Packets
         0         29406796840                   0
         1                   0                   0
         2             1393759                   0
         3                   0                   0
         4            64063042                   0
         5              392779                   0
         6             4216037                   0
         7             5595686                   0


MC Egress queues:
Queue counters    Queued packets    Dropped Packets
         0            96478205                   0
         1           391586866                   0
         2            64706402                   0
         3            11735791                   0

SSH@WL_P1_D4-4WH-FA_L3-B7450_5.16#sh int ethernet 1/2/1 | include line |  untilization
10GigabitEthernet1/2/1 is up, line protocol is up 
SSH@WL_P1_D4-4WH-FA_L3-B7450_5.16#sh int ethernet 1/2/1 | include line |  untilization
10GigabitEthernet1/2/1 is up, line protocol is up 
SSH@WL_P1_D4-4WH-FA_L3-B7450_5.16#sh int ethernet 1/2/1 | include line |  untilization
10GigabitEthernet1/2/1 is up, line protocol is up 
SSH@WL_P1_D4-4WH-FA_L3-B7450_5.16#sh statistics ethernet 1/2/1
Port       Link    State   Dupl Speed Trunk Tag Pvid Pri MAC             Name
1/2/1      Up      Forward Full 10G   1     Yes 1    0   609c.9f2e.67e0  ###Uplink_to_Ac

 Port 1/2/1 Counters:
         InOctets       44721950056827           OutOctets       16559278832486
           InPkts          49887665356             OutPkts          30050242760
  InBroadcastPkts           5304593701    OutBroadcastPkts            143465018
  InMulticastPkts            104192844    OutMulticastPkts             87047870
    InUnicastPkts          44477680008      OutUnicastPkts          29819729872
        InBadPkts                    5
      InFragments                    0
       InDiscards                    0           OutErrors                    0
              CRC                    5          Collisions                    0
         InErrors                    5      LateCollisions                    0
      InGiantPkts                    0
      InShortPkts                    0
         InJabber                    0         OutDiscards                    0
   InFlowCtrlPkts                    0     OutFlowCtrlPkts                    0
     InBitsPerSec             48145024       OutBitsPerSec             22364200
     InPktsPerSec                 6800       OutPktsPerSec                 5246
    InUtilization                0.48%      OutUtilization                0.22%

SSH@WL_P1_D4-4WH-FA_L3-B7450_5.16#sh statistics ethernet 1/2/1
Port       Link    State   Dupl Speed Trunk Tag Pvid Pri MAC             Name
1/2/1      Up      Forward Full 10G   1     Yes 1    0   609c.9f2e.67e0  ###Uplink_to_Ac

 Port 1/2/1 Counters:
         InOctets       44722161189205           OutOctets       16559379649193
           InPkts          49887913257             OutPkts          30050432056
  InBroadcastPkts           5304656701    OutBroadcastPkts            143466953
  InMulticastPkts            104194175    OutMulticastPkts             87047996
    InUnicastPkts          44477863556      OutUnicastPkts          29819917107
        InBadPkts                    5
      InFragments                    0
       InDiscards                    0           OutErrors                    0
              CRC                    5          Collisions                    0
         InErrors                    5      LateCollisions                    0
      InGiantPkts                    0
      InShortPkts                    0
         InJabber                    0         OutDiscards                    0
   InFlowCtrlPkts                    0     OutFlowCtrlPkts                    0
     InBitsPerSec             47755576       OutBitsPerSec             22514696
     InPktsPerSec                 6797       OutPktsPerSec                 5264
    InUtilization                0.48%      OutUtilization                0.22%

SSH@WL_P1_D4-4WH-FA_L3-B7450_5.16#show sysmon count all 
Invalid input -> sysmon count all 
Type ? for a list
SSH@WL_P1_D4-4WH-FA_L3-B7450_5.16#show optic 1/2/1
 Port   Temperature    Voltage       Tx Power      Rx Power    Tx Bias Current
+-----+-------------+-------------+-------------+-------------+---------------+
1/2/1   27.3281 C    3.2910 volts  -1.3590 dBm   -1.9997 dBm    40.814 mA
        Normal          Normal       Normal         Normal         Normal     

SSH@WL_P1_D4-4WH-FA_L3-B7450_5.16#show media e 1/2/1
Port   1/2/1: Type  : 10GE LR 10km (SFP+)
     Vendor: RUCKUS            Version: A   
     Part# : 57-0000076-01    Serial#: ADF216090000W0T
SSH@WL_P1_D4-4WH-FA_L3-B7450_5.16#
SSH@WL_P1_D4-4WH-FA_L3-B7450_5.16#dm statistics
real_transition-transit-sw_reset-discards:
133-0-0-0(1/1/1) 55-0-0-0(1/1/2) 53-0-0-0(1/1/3) 33-0-0-0(1/1/4) 
0-0-0-0(1/1/5) 69-0-0-0(1/1/6) 0-0-0-0(1/1/7) 115-0-0-0(1/1/8) 
0-0-0-0(1/1/9) 45-0-0-0(1/1/10) 0-0-0-0(1/1/11) 31-0-0-0(1/1/12) 
0-0-0-0(1/1/13) 47-0-0-0(1/1/14) 0-0-0-0(1/1/15) 0-0-0-0(1/1/16) 
0-0-0-0(1/1/17) 0-0-0-0(1/1/18) 0-0-0-0(1/1/19) 0-0-0-0(1/1/20) 
0-0-0-0(1/1/21) 0-0-0-0(1/1/22) 0-0-0-0(1/1/23) 0-0-0-0(1/1/24) 
0-0-0-0(1/1/25) 0-0-0-0(1/1/26) 0-0-0-0(1/1/27) 0-0-0-0(1/1/28) 
0-0-0-0(1/1/29) 0-0-0-0(1/1/30) 0-0-0-0(1/1/31) 0-0-0-0(1/1/32) 
0-0-0-0(1/1/33) 0-0-0-0(1/1/34) 0-0-0-0(1/1/35) 0-0-0-0(1/1/36) 
0-0-0-0(1/1/37) 0-0-0-0(1/1/38) 0-0-0-0(1/1/39) 0-0-0-0(1/1/40) 
0-0-0-0(1/1/41) 0-0-0-0(1/1/42) 0-0-0-0(1/1/43) 0-0-0-0(1/1/44) 
0-0-0-0(1/1/45) 0-0-0-0(1/1/46) 0-0-0-0(1/1/47) 0-0-0-0(1/1/48) 
7-0-0-0(1/2/1) 7-0-0-0(1/2/2) 8-0-0-0(1/2/3) 10-0-0-0(1/2/4) 
0-0-0-0(lg1) 0-0-0-0(lg2) 0-0-0-0(lg3) 0-0-0-0(lg4) 
0-0-0-0(lg5) 0-0-0-0(lg6) 0-0-0-0(lg7) 0-0-0-0(lg8) 
0-0-0-0(lg9) 0-0-0-0(lg10) 0-0-0-0(lg11) 0-0-0-0(lg12) 
0-0-0-0(lg13) 0-0-0-0(lg14) 0-0-0-0(lg15) 0-0-0-0(lg16) 
0-0-0-0(lg17) 0-0-0-0(lg18) 0-0-0-0(lg19) 0-0-0-0(lg20) 
0-0-0-0(lg21) 0-0-0-0(lg22) 0-0-0-0(lg23) 0-0-0-0(lg24) 
0-0-0-0(lg25) 0-0-0-0(lg26) 0-0-0-0(lg27) 0-0-0-0(lg28) 
0-0-0-0(lg29) 0-0-0-0(lg30) 0-0-0-0(lg31) 0-0-0-0(lg32) 
0-0-0-0(lg33) 0-0-0-0(lg34) 0-0-0-0(lg35) 0-0-0-0(lg36) 
0-0-0-0(lg37) 0-0-0-0(lg38) 0-0-0-0(lg39) 0-0-0-0(lg40) 
0-0-0-0(lg41) 0-0-0-0(lg42) 0-0-0-0(lg43) 0-0-0-0(lg44) 
0-0-0-0(lg45) 0-0-0-0(lg46) 0-0-0-0(lg47) 0-0-0-0(lg48) 
0-0-0-0(lg49) 0-0-0-0(lg50) 0-0-0-0(lg51) 0-0-0-0(lg52) 
0-0-0-0(lg53) 0-0-0-0(lg54) 0-0-0-0(lg55) 0-0-0-0(lg56) 
0-0-0-0(lg57) 0-0-0-0(lg58) 0-0-0-0(lg59) 0-0-0-0(lg60) 
0-0-0-0(lg61) 0-0-0-0(lg62) 0-0-0-0(lg63) 0-0-0-0(lg64) 
0-0-0-0(lg65) 0-0-0-0(lg66) 0-0-0-0(lg67) 0-0-0-0(lg68) 
0-0-0-0(lg69) 0-0-0-0(lg70) 0-0-0-0(lg71) 0-0-0-0(lg72) 
0-0-0-0(lg73) 0-0-0-0(lg74) 0-0-0-0(lg75) 0-0-0-0(lg76) 
0-0-0-0(lg77) 0-0-0-0(lg78) 0-0-0-0(lg79) 0-0-0-0(lg80) 
0-0-0-0(lg81) 0-0-0-0(lg82) 0-0-0-0(lg83) 0-0-0-0(lg84) 
0-0-0-0(lg85) 0-0-0-0(lg86) 0-0-0-0(lg87) 0-0-0-0(lg88) 
0-0-0-0(lg89) 0-0-0-0(lg90) 0-0-0-0(lg91) 0-0-0-0(lg92) 
0-0-0-0(lg93) 0-0-0-0(lg94) 0-0-0-0(lg95) 0-0-0-0(lg96) 
0-0-0-0(lg97) 0-0-0-0(lg98) 0-0-0-0(lg99) 0-0-0-0(lg100) 
0-0-0-0(lg101) 0-0-0-0(lg102) 0-0-0-0(lg103) 0-0-0-0(lg104) 
0-0-0-0(lg105) 0-0-0-0(lg106) 0-0-0-0(lg107) 0-0-0-0(lg108) 
0-0-0-0(lg109) 0-0-0-0(lg110) 0-0-0-0(lg111) 0-0-0-0(lg112) 
0-0-0-0(lg113) 0-0-0-0(lg114) 0-0-0-0(lg115) 0-0-0-0(lg116) 
0-0-0-0(lg117) 0-0-0-0(lg118) 0-0-0-0(lg119) 0-0-0-0(lg120) 
0-0-0-0(lg121) 0-0-0-0(lg122) 0-0-0-0(lg123) 0-0-0-0(lg124) 
0-0-0-0(lg125) 0-0-0-0(lg126) 0-0-0-0(lg127) 0-0-0-0(lg128) 
0-0-0-0(lg129) 0-0-0-0(lg130) 0-0-0-0(lg131) 0-0-0-0(lg132) 
0-0-0-0(lg133) 0-0-0-0(lg134) 0-0-0-0(lg135) 0-0-0-0(lg136) 
0-0-0-0(lg137) 0-0-0-0(lg138) 0-0-0-0(lg139) 0-0-0-0(lg140) 
0-0-0-0(lg141) 0-0-0-0(lg142) 0-0-0-0(lg143) 0-0-0-0(lg144) 
0-0-0-0(lg145) 0-0-0-0(lg146) 0-0-0-0(lg147) 0-0-0-0(lg148) 
0-0-0-0(lg149) 0-0-0-0(lg150) 0-0-0-0(lg151) 0-0-0-0(lg152) 
0-0-0-0(lg153) 0-0-0-0(lg154) 0-0-0-0(lg155) 0-0-0-0(lg156) 
0-0-0-0(lg157) 0-0-0-0(lg158) 0-0-0-0(lg159) 0-0-0-0(lg160) 
0-0-0-0(lg161) 0-0-0-0(lg162) 0-0-0-0(lg163) 0-0-0-0(lg164) 
0-0-0-0(lg165) 0-0-0-0(lg166) 0-0-0-0(lg167) 0-0-0-0(lg168) 
0-0-0-0(lg169) 0-0-0-0(lg170) 0-0-0-0(lg171) 0-0-0-0(lg172) 
0-0-0-0(lg173) 0-0-0-0(lg174) 0-0-0-0(lg175) 0-0-0-0(lg176) 
0-0-0-0(lg177) 0-0-0-0(lg178) 0-0-0-0(lg179) 0-0-0-0(lg180) 
0-0-0-0(lg181) 0-0-0-0(lg182) 0-0-0-0(lg183) 0-0-0-0(lg184) 
0-0-0-0(lg185) 0-0-0-0(lg186) 0-0-0-0(lg187) 0-0-0-0(lg188) 
0-0-0-0(lg189) 0-0-0-0(lg190) 0-0-0-0(lg191) 0-0-0-0(lg192) 
0-0-0-0(lg193) 0-0-0-0(lg194) 0-0-0-0(lg195) 0-0-0-0(lg196) 
0-0-0-0(lg197) 0-0-0-0(lg198) 0-0-0-0(lg199) 0-0-0-0(lg200) 
0-0-0-0(lg201) 0-0-0-0(lg202) 0-0-0-0(lg203) 0-0-0-0(lg204) 
0-0-0-0(lg205) 0-0-0-0(lg206) 0-0-0-0(lg207) 0-0-0-0(lg208) 
0-0-0-0(lg209) 0-0-0-0(lg210) 0-0-0-0(lg211) 0-0-0-0(lg212) 
0-0-0-0(lg213) 0-0-0-0(lg214) 0-0-0-0(lg215) 0-0-0-0(lg216) 
0-0-0-0(lg217) 0-0-0-0(lg218) 0-0-0-0(lg219) 0-0-0-0(lg220) 
0-0-0-0(lg221) 0-0-0-0(lg222) 0-0-0-0(lg223) 0-0-0-0(lg224) 
0-0-0-0(lg225) 0-0-0-0(lg226) 0-0-0-0(lg227) 0-0-0-0(lg228) 
0-0-0-0(lg229) 0-0-0-0(lg230) 0-0-0-0(lg231) 0-0-0-0(lg232) 
0-0-0-0(lg233) 0-0-0-0(lg234) 0-0-0-0(lg235) 0-0-0-0(lg236) 
0-0-0-0(lg237) 0-0-0-0(lg238) 0-0-0-0(lg239) 0-0-0-0(lg240) 
0-0-0-0(lg241) 0-0-0-0(lg242) 0-0-0-0(lg243) 0-0-0-0(lg244) 
0-0-0-0(lg245) 0-0-0-0(lg246) 0-0-0-0(lg247) 0-0-0-0(lg248) 
0-0-0-0(lg249) 0-0-0-0(lg250) 0-0-0-0(lg251) 0-0-0-0(lg252) 
0-0-0-0(lg253) 0-0-0-0(lg254) 0-0-0-0(lg255) 0-0-0-0(lg256) 
0-0-0-0(lg257) 0-0-0-0(lg258) 0-0-0-0(lg259) 0-0-0-0(lg260) 
0-0-0-0(lg261) 0-0-0-0(lg262) 0-0-0-0(lg263) 0-0-0-0(lg264) 
0-0-0-0(lg265) 0-0-0-0(lg266) 0-0-0-0(lg267) 0-0-0-0(lg268) 
0-0-0-0(lg269) 0-0-0-0(lg270) 0-0-0-0(lg271) 0-0-0-0(lg272) 
0-0-0-0(lg273) 0-0-0-0(lg274) 0-0-0-0(lg275) 0-0-0-0(lg276) 
0-0-0-0(lg277) 0-0-0-0(lg278) 0-0-0-0(lg279) 0-0-0-0(lg280) 
0-0-0-0(lg281) 0-0-0-0(lg282) 0-0-0-0(lg283) 0-0-0-0(lg284) 
0-0-0-0(lg285) 0-0-0-0(lg286) 0-0-0-0(lg287) 0-0-0-0(lg288) 
0-0-0-0(lg289) 0-0-0-0(lg290) 0-0-0-0(lg291) 0-0-0-0(lg292) 
0-0-0-0(lg293) 0-0-0-0(lg294) 0-0-0-0(lg295) 0-0-0-0(lg296) 
0-0-0-0(lg297) 0-0-0-0(lg298) 0-0-0-0(lg299) 0-0-0-0(lg300) 
0-0-0-0(lg301) 0-0-0-0(lg302) 0-0-0-0(lg303) 0-0-0-0(lg304) 
0-0-0-0(lg305) 0-0-0-0(lg306) 0-0-0-0(lg307) 0-0-0-0(lg308) 
0-0-0-0(lg309) 0-0-0-0(lg310) 0-0-0-0(lg311) 0-0-0-0(lg312) 
0-0-0-0(lg313) 0-0-0-0(lg314) 0-0-0-0(lg315) 0-0-0-0(lg316) 
0-0-0-0(lg317) 0-0-0-0(lg318) 0-0-0-0(lg319) 0-0-0-0(lg320) 
0-0-0-0(lg321) 0-0-0-0(lg322) 0-0-0-0(lg323) 0-0-0-0(lg324) 
0-0-0-0(lg325) 0-0-0-0(lg326) 0-0-0-0(lg327) 0-0-0-0(lg328) 
0-0-0-0(lg329) 0-0-0-0(lg330) 0-0-0-0(lg331) 0-0-0-0(lg332) 
0-0-0-0(lg333) 0-0-0-0(lg334) 0-0-0-0(lg335) 0-0-0-0(lg336) 
0-0-0-0(lg337) 0-0-0-0(lg338) 0-0-0-0(lg339) 0-0-0-0(lg340) 
0-0-0-0(lg341) 0-0-0-0(lg342) 0-0-0-0(lg343) 0-0-0-0(lg344) 
0-0-0-0(lg345) 0-0-0-0(lg346) 0-0-0-0(lg347) 0-0-0-0(lg348) 
0-0-0-0(lg349) 0-0-0-0(lg350) 0-0-0-0(lg351) 0-0-0-0(lg352) 
0-0-0-0(lg353) 0-0-0-0(lg354) 0-0-0-0(lg355) 0-0-0-0(lg356) 
0-0-0-0(lg357) 0-0-0-0(lg358) 0-0-0-0(lg359) 0-0-0-0(lg360) 
0-0-0-0(lg361) 0-0-0-0(lg362) 0-0-0-0(lg363) 0-0-0-0(lg364) 
0-0-0-0(lg365) 0-0-0-0(lg366) 0-0-0-0(lg367) 0-0-0-0(lg368) 
0-0-0-0(lg369) 0-0-0-0(lg370) 0-0-0-0(lg371) 0-0-0-0(lg372) 
0-0-0-0(lg373) 0-0-0-0(lg374) 0-0-0-0(lg375) 0-0-0-0(lg376) 
0-0-0-0(lg377) 0-0-0-0(lg378) 0-0-0-0(lg379) 0-0-0-0(lg380) 
0-0-0-0(lg381) 0-0-0-0(lg382) 0-0-0-0(lg383) 0-0-0-0(lg384) 
0-0-0-0(lg385) 0-0-0-0(lg386) 0-0-0-0(lg387) 0-0-0-0(lg388) 
0-0-0-0(lg389) 0-0-0-0(lg390) 0-0-0-0(lg391) 0-0-0-0(lg392) 
0-0-0-0(lg393) 0-0-0-0(lg394) 0-0-0-0(lg395) 0-0-0-0(lg396) 
0-0-0-0(lg397) 0-0-0-0(lg398) 0-0-0-0(lg399) 0-0-0-0(lg400) 
0-0-0-0(lg401) 0-0-0-0(lg402) 0-0-0-0(lg403) 0-0-0-0(lg404) 
0-0-0-0(lg405) 0-0-0-0(lg406) 0-0-0-0(lg407) 0-0-0-0(lg408) 
0-0-0-0(lg409) 0-0-0-0(lg410) 0-0-0-0(lg411) 0-0-0-0(lg412) 
0-0-0-0(lg413) 0-0-0-0(lg414) 0-0-0-0(lg415) 0-0-0-0(lg416) 
0-0-0-0(lg417) 0-0-0-0(lg418) 0-0-0-0(lg419) 0-0-0-0(lg420) 
0-0-0-0(lg421) 0-0-0-0(lg422) 0-0-0-0(lg423) 0-0-0-0(lg424) 
0-0-0-0(lg425) 0-0-0-0(lg426) 0-0-0-0(lg427) 0-0-0-0(lg428) 
0-0-0-0(lg429) 0-0-0-0(lg430) 0-0-0-0(lg431) 0-0-0-0(lg432) 
0-0-0-0(lg433) 0-0-0-0(lg434) 0-0-0-0(lg435) 0-0-0-0(lg436) 
0-0-0-0(lg437) 0-0-0-0(lg438) 0-0-0-0(lg439) 0-0-0-0(lg440) 
0-0-0-0(lg441) 0-0-0-0(lg442) 0-0-0-0(lg443) 0-0-0-0(lg444) 
0-0-0-0(lg445) 0-0-0-0(lg446) 0-0-0-0(lg447) 0-0-0-0(lg448) 
0-0-0-0(lg449) 0-0-0-0(lg450) 0-0-0-0(lg451) 0-0-0-0(lg452) 
0-0-0-0(lg453) 0-0-0-0(lg454) 0-0-0-0(lg455) 0-0-0-0(lg456) 
0-0-0-0(lg457) 0-0-0-0(lg458) 0-0-0-0(lg459) 0-0-0-0(lg460) 
0-0-0-0(lg461) 0-0-0-0(lg462) 0-0-0-0(lg463) 0-0-0-0(lg464) 
0-0-0-0(lg465) 0-0-0-0(lg466) 0-0-0-0(lg467) 0-0-0-0(lg468) 
0-0-0-0(lg469) 0-0-0-0(lg470) 0-0-0-0(lg471) 0-0-0-0(lg472) 
0-0-0-0(lg473) 0-0-0-0(lg474) 0-0-0-0(lg475) 0-0-0-0(lg476) 
0-0-0-0(lg477) 0-0-0-0(lg478) 0-0-0-0(lg479) 0-0-0-0(lg480) 
0-0-0-0(lg481) 0-0-0-0(lg482) 0-0-0-0(lg483) 0-0-0-0(lg484) 
0-0-0-0(lg485) 0-0-0-0(lg486) 0-0-0-0(lg487) 0-0-0-0(lg488) 
0-0-0-0(lg489) 0-0-0-0(lg490) 0-0-0-0(lg491) 0-0-0-0(lg492) 
0-0-0-0(lg493) 0-0-0-0(lg494) 0-0-0-0(lg495) 0-0-0-0(lg496) 
0-0-0-0(lg497) 0-0-0-0(lg498) 0-0-0-0(lg499) 0-0-0-0(lg500) 
0-0-0-0(lg501) 0-0-0-0(lg502) 0-0-0-0(lg503) 0-0-0-0(lg504) 
0-0-0-0(lg505) 0-0-0-0(lg506) 0-0-0-0(lg507) 0-0-0-0(lg508) 
0-0-0-0(lg509) 0-0-0-0(lg510) 0-0-0-0(lg511) 0-0-0-0(lg512) 
SSH@WL_P1_D4-4WH-FA_L3-B7450_5.16#show lag brief
Total number of LAGs:          2
Total number of deployed LAGs: 2
Total number of trunks created:2 (254 available)
LACP System Priority / ID:     1 / 609c.9f2e.67e0
LACP Long timeout:             120, default: 120
LACP Short timeout:            3, default: 3
LAG            Type   Deploy Trunk Intf     Port List
4WH            dynamic  Y    1     lg1      e 1/2/1 to 1/2/2 
ToCisco        dynamic  Y    15    lg15     e 1/2/3 to 1/2/4 
SSH@WL_P1_D4-4WH-FA_L3-B7450_5.16#show log 
Syslog logging: enabled ( 0 messages dropped, 1 flushes, 29 overruns)
    Buffer logging: level ACDMEINW, 1000 messages logged
    level code: A=alert C=critical D=debugging M=emergency E=error
                I=informational N=notification W=warning

Dynamic Log Buffer (1000 lines):
Feb 25 11:04:42:I:Security: SSH login by networkadmin from src IP 10.12.2.112 from src MAC cc4e.24f3.29c8 to PRIVILEGED EXEC mode using RSA as Server Host Key.
Feb 25 11:04:40:I:Security: SSH login by networkadmin from src IP 10.12.2.112 from src MAC cc4e.24f3.29c8 to USER EXEC mode using RSA as Server Host Key.
Feb 25 10:06:10:I:Security: SSH timed out by networkadmin from src IP 10.12.2.112 from src MAC cc4e.24f3.29c8 from PRIVILEGED EXEC mode using RSA as Server Host Key.
Feb 25 09:29:05:I:Security: SSH login by networkadmin from src IP 10.12.2.112 from src MAC cc4e.24f3.29c8 to PRIVILEGED EXEC mode using RSA as Server Host Key.
Feb 25 09:29:04:I:Security: SSH login by networkadmin from src IP 10.12.2.112 from src MAC cc4e.24f3.29c8 to USER EXEC mode using RSA as Server Host Key.
Feb 25 09:22:44:I:Security: SSH terminated by networkadmin from src IP 10.12.2.112 from src MAC cc4e.24f3.29c8 from PRIVILEGED EXEC mode using RSA as Server Host Key.
Feb 25 09:22:44:N:System: SSH session 1 is closed, So the executing batch 1 is cancelled
Feb 25 09:21:01:I:Security: SSH login by networkadmin from src IP 10.12.2.112 from src MAC cc4e.24f3.29c8 to PRIVILEGED EXEC mode using RSA as Server Host Key.
Feb 25 09:20:59:I:Security: SSH login by networkadmin from src IP 10.12.2.112 from src MAC cc4e.24f3.29c8 to USER EXEC mode using RSA as Server Host Key.
Feb 24 22:46:59:I:System: Logical link on dynamic lag interface ethernet 1/2/1 is up.
Feb 24 22:46:59:I:System: Interface ethernet 1/2/1, state up
Feb 24 22:46:58:I:System: Interface ethernet 1/2/1, state down
Feb 24 22:46:57:I:System: Interface ethernet 1/2/1, state up
Feb 24 22:46:56:I:System: Interface ethernet 1/2/1, state down
Feb 24 22:46:55:I:System: Interface ethernet 1/2/1, state up
Feb 24 22:43:47:I:System: Interface ethernet 1/2/1, state down
Feb 24 22:43:46:I:System: Interface ethernet 1/2/1, state up
Feb 24 22:41:55:I:System: Interface ethernet 1/2/1, state down
Feb 24 22:41:54:I:System: Logical link on dynamic lag interface ethernet 1/2/1 is up.
Feb 24 22:41:54:I:System: Interface ethernet 1/2/1, state up
Feb 24 22:41:53:I:System: Interface ethernet 1/2/1, state down
Feb 24 22:41:52:I:System: Interface ethernet 1/2/1, state up
Feb 24 22:41:29:I:System: Interface ethernet 1/2/1, state down
Feb 24 22:41:28:I:System: Interface ethernet 1/2/1, state up
Feb 24 22:41:16:I:System: Interface ethernet 1/2/1, state down
Feb 24 22:41:16:I:System: Interface ethernet 1/2/1, state up
Feb 24 22:41:15:I:System: Interface ethernet 1/2/1, state down
Feb 24 22:41:14:I:System: Interface ethernet 1/2/1, state up
Feb 24 22:41:14:I:System: Interface ethernet 1/2/1, state down
Feb 24 22:41:13:I:System: Interface ethernet 1/2/1, state up
Feb 24 22:41:11:I:System: Interface ethernet 1/2/1, state down
Feb 24 22:41:10:I:System: Interface ethernet 1/2/1, state up
Feb 24 22:41:04:I:System: Interface ethernet 1/2/1, state down
Feb 24 22:41:03:I:System: Interface ethernet 1/2/1, state up
Feb 24 22:41:00:I:System: Interface ethernet 1/2/1, state down
Feb 24 22:41:00:I:System: Logical link on dynamic lag interface ethernet 1/2/1 is up.
Feb 24 22:41:00:I:System: Interface ethernet 1/2/1, state up
Feb 24 22:40:59:I:System: Interface ethernet 1/2/1, state down
Feb 24 22:40:58:I:System: Interface ethernet 1/2/1, state up
Feb 24 22:40:46:I:System: Interface ethernet 1/2/1, state down
Feb 24 22:40:46:I:System: Interface ethernet 1/2/1, state up
Feb 24 22:40:45:I:System: Interface ethernet 1/2/1, state down
Feb 24 22:40:44:I:System: Interface ethernet 1/2/1, state up
Feb 24 22:40:40:I:System: Interface ethernet 1/2/1, state down
Feb 24 22:40:40:I:System: Interface ethernet 1/2/1, state up
Feb 24 22:40:39:I:System: Interface ethernet 1/2/1, state down
Feb 24 22:40:38:I:System: Interface ethernet 1/2/1, state up
Feb 24 22:40:38:I:System: Interface ethernet 1/2/1, state down
Feb 24 22:40:37:I:System: Logical link on dynamic lag interface ethernet 1/2/1 is up.
Feb 24 22:40:36:I:System: Interface ethernet 1/2/1, state up
Feb 24 22:40:36:I:System: Interface ethernet 1/2/1, state down
Feb 24 22:40:35:I:System: Interface ethernet 1/2/1, state up
Feb 24 22:40:34:I:System: Interface ethernet 1/2/1, state down
Feb 24 22:40:34:I:System: Interface ethernet 1/2/1, state up
Feb 24 22:40:33:I:System: Interface ethernet 1/2/1, state down
Feb 24 22:40:33:I:System: Interface ethernet 1/2/1, state up
Feb 24 22:40:30:I:System: Interface ethernet 1/2/1, state down
Feb 24 22:40:30:I:System: Interface ethernet 1/2/1, state up
Feb 24 22:40:28:I:System: Interface ethernet 1/2/1, state down
Feb 24 22:40:28:I:System: Interface ethernet 1/2/1, state up
Feb 24 22:40:27:I:System: Interface ethernet 1/2/1, state down
Feb 24 22:40:26:I:System: Interface ethernet 1/2/1, state up
Feb 24 22:40:25:I:System: Interface ethernet 1/2/1, state down
Feb 24 22:40:24:I:System: Interface ethernet 1/2/1, state up
Feb 24 22:40:23:I:System: Interface ethernet 1/2/1, state down
Feb 24 22:40:23:I:System: Interface ethernet 1/2/1, state up
Feb 24 22:40:22:I:System: Interface ethernet 1/2/1, state down
Feb 24 22:40:22:I:System: Interface ethernet 1/2/1, state up
Feb 24 22:40:20:I:System: Interface ethernet 1/2/1, state down
Feb 24 22:40:20:I:System: Interface ethernet 1/2/1, state up

[pradeep_sonawne]

Hi Sir,

i catch below interface output, as i observed when eth1/2/1 start bouncing the core switch port show LACP BLOCKED


here is the output


-*--------------------------------------------------------------------------------

SSH@BAL_Waluj_CORE_A_B7450#sh int ethernet 2/3/4
10GigabitEthernet2/3/4 is up, line protocol is down (LACP-BLOCKED)
  Port down (LACP-BLOCKED) for 267 day(s) 8 hour(s) 59 minute(s) 1 second(s)
  Hardware is 10GigabitEthernet, address is cc4e.24f3.29c8 (bia 609c.9fb2.3878)
  Configured speed 10Gbit, actual 10Gbit, configured duplex fdx, actual fdx
  Member of 26 L2 VLANs, port is dual mode in Vlan 1, port state is BLOCKING
  BPDU guard is Disabled, ROOT protect is Disabled, Designated protect is Disabled
  Link Error Dampening is Disabled
  STP configured to ON, priority is level0, mac-learning is enabled
  Openflow is Disabled, Openflow Hybrid mode is Disabled,  Flow Control is config enabled, oper enabled, negotiation disabled
  Mirror disabled, Monitor disabled
  Mac-notification is disabled
  Member of active trunk ports 1/3/4,2/3/4,lg4, Lag Interface is lg4
  Member of configured trunk ports 1/3/4,2/3/4,lg4, Lag Interface is lg4
  Port name is ###Downlink_To_DIST###
  IPG XGMII 96 bits-time
  MTU 1500 bytes, encapsulation ethernet
  MMU Mode is Store-and-forward
  300 second input rate: 24042128 bits/sec, 4478 packets/sec, 0.24% utilization
  300 second output rate: 22711440 bits/sec, 4296 packets/sec, 0.22% utilization
  147104123838 packets input, 60811863266715 bytes, 0 no buffer
  Received 902518314 broadcasts, 1243434879 multicasts, 144958095635 unicasts
  0 input errors, 0 CRC, 0 frame, 0 ignored
  0 runts, 0 giants
  248753489525 packets output, 248563182874843 bytes, 0 underruns
  Transmitted 23799372310 broadcasts, 479479010 multicasts, 224474638205 unicasts
  0 output errors, 0 collisions
  Relay Agent Information option: Disabled
  Protected: No
  MAC Port Security: Disabled

UC Egress queues:
Queue counters    Queued packets    Dropped Packets
         0        224278231089                   0
         1               36576                   0
         2                 704                   0
         3                   0                   0
         4            50209861                   0
         5            13199959                   0
         6              120378                   0
         7            30265527                   0


MC Egress queues:
Queue counters    Queued packets    Dropped Packets
         0         13720134059                   0
         1         10393804789                   0
         2           261154367                   0
         3             6320808                   0

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