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Port Channel issue

rajaram855
Level 1
Level 1

CoreSW#sh etherchannel 13 summary
Flags: D - down P - bundled in port-channel
I - stand-alone s - suspended
H - Hot-standby (LACP only)
R - Layer3 S - Layer2
U - in use f - failed to allocate aggregator

M - not in use, minimum links not met
u - unsuitable for bundling
w - waiting to be aggregated
d - default port

A - formed by Auto LAG


Number of channel-groups in use: 13
Number of aggregators: 13

Group Port-channel Protocol Ports
------+-------------+-----------+-----------------------------------------------
13 Po13(SU) LACP Gi1/0/26(s) Gi2/0/26(P)

 

 

 

 

 

 

 

 

 

CoreSW#ssh 10.xxx.xx.xx
Password:


PoESW-1#sh eth
PoESW-1#sh etherchannel su
PoESW-1#sh etherchannel summary
Flags: D - down P - bundled in port-channel
I - stand-alone s - suspended
H - Hot-standby (LACP only)
R - Layer3 S - Layer2
U - in use f - failed to allocate aggregator

M - not in use, minimum links not met
u - unsuitable for bundling
w - waiting to be aggregated
d - default port

A - formed by Auto LAG


Number of channel-groups in use: 1
Number of aggregators: 1

Group Port-channel Protocol Ports
------+-------------+-----------+-----------------------------------------------
1 Po1(SU) LACP Gi1/0/47(s) Gi1/0/48(P)

 

In two swtich core sw and one Poe switch port channel issue. 

12 Replies 12

many reason

1- speed/duplex mismatch
2- you misconnect the Cable
3- the PO is not config correctly 

MHM

please elaborate the configuration 

CoreSW#sh etherchannel 13 summary
Flags:  D - down        P - bundled in port-channel
        I - stand-alone s - suspended
        H - Hot-standby (LACP only)
        R - Layer3      S - Layer2
        U - in use      f - failed to allocate aggregator
 
        M - not in use, minimum links not met
        u - unsuitable for bundling
        w - waiting to be aggregated
        d - default port
 
        A - formed by Auto LAG
 
 
Number of channel-groups in use: 13
Number of aggregators:           13
 
Group  Port-channel  Protocol    Ports
------+-------------+-----------+-----------------------------------------------
13     Po13(SU)        LACP        Gi1/0/26(s)     Gi2/0/26(P)
 
india-181-CoreSW#sh in
india-181-CoreSW#sh int
india-181-CoreSW#sh interfaces gi 1/0/26
GigabitEthernet1/0/26 is up, line protocol is down (suspended)
  Hardware is Gigabit Ethernet, address is xxxx.xxxx.xxxx (bia xxxx.xxxx.xxxx)
   
  MTU 1500 bytes, BW 100000 Kbit/sec, 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, media type is 10/100/1000BaseTX
  input flow-control is on, output flow-control is unsupported
  ARP type: ARPA, ARP Timeout 04:00:00
  Last input 00:00:24, output 00:00:20, 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
     3635417032 packets input, 3536432462692 bytes, 0 no buffer
     Received 735549 broadcasts (498389 multicasts)
     0 runts, 0 giants, 0 throttles
     13 input errors, 10 CRC, 0 frame, 0 overrun, 0 ignored
     0 watchdog, 498389 multicast, 0 pause input
     0 input packets with dribble condition detected
     7331533351 packets output, 4746107690492 bytes, 0 underruns
     Output 932856 broadcasts (22213417 multicasts)
     0 output errors, 0 collisions, 6 interface resets
     18 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
 
 
PoESW-1#sh etherchannel summary
Flags:  D - down        P - bundled in port-channel
        I - stand-alone s - suspended
        H - Hot-standby (LACP only)
        R - Layer3      S - Layer2
        U - in use      f - failed to allocate aggregator
 
        M - not in use, minimum links not met
        u - unsuitable for bundling
        w - waiting to be aggregated
        d - default port
 
        A - formed by Auto LAG
 
 
Number of channel-groups in use: 1
Number of aggregators:           1
 
Group  Port-channel  Protocol    Ports
------+-------------+-----------+-----------------------------------------------
1      Po1(SU)         LACP        Gi1/0/47(s)     Gi1/0/48(P)
 
India-182-PoESW-1#sh int gi 1/0/47
   
 
GigabitEthernet1/0/47 is up, line protocol is down (suspended)
  Hardware is Gigabit Ethernet, address is xxxx.xxxx.xxxx (bia xxxx.xxxx.xxxx)
 
  MTU 1500 bytes, BW 100000 Kbit/sec, 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, media type is 10/100/1000BaseTX
  input flow-control is on, output flow-control is unsupported
  ARP type: ARPA, ARP Timeout 04:00:00
  Last input 00:00:29, output 00:00:03, output hang never
  Last clearing of "show interface" counters never
  Input queue: 0/2000/0/0 (size/max/drops/flushes); Total output drops: 66950
  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
     3188232266 packets input, 2056671183090 bytes, 0 no buffer
     Received 10081969 broadcasts (9473492 multicasts)
     0 runts, 0 giants, 0 throttles
     1 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored
     0 watchdog, 9473492 multicast, 0 pause input
     0 input packets with dribble condition detected
     1936775955 packets output, 1788962024296 bytes, 0 underruns
     Output 413992 broadcasts (230404 multicasts)
     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

paste running configuration from both sides

Paste output for "show port-security interface GigabitEthernet1/0/26"

make sure you can see cdp neighbor on both ports

bounce the port and send output of debug port-channel trace

-hope this helps-

sh port-security int gi 1/0/26
Port Security : Disabled
Port Status : Secure-down
Violation Mode : Shutdown
Aging Time : 0 mins
Aging Type : Absolute
SecureStatic Address Aging : Disabled
Maximum MAC Addresses : 1
Total MAC Addresses : 0
Configured MAC Addresses : 0
Sticky MAC Addresses : 0
Last Source Address:Vlan : 0000.0000.0000:0
Security Violation Count : 0

 

share below 

show lacp neighbor detail 
show lacp internal 
show lacp count

send as PM

MHM

show lacp neighbor detail 

Channel group 13
LACP port Admin Oper Port Port
Port Flags State Priority Key Key Number State
Gi1/0/26 SA susp 32768 0xD 0x0 0x11B 0x4D
Gi2/0/26 SA bndl 32768 0xD 0xD 0x21B 0x3D

show lacp internal

Channel group 13
LACP port Admin Oper Port Port
Port Flags State Priority Key Key Number State
Gi1/0/26 SA susp 32768 0xD 0x0 0x11B 0x4D
Gi2/0/26 SA bndl 32768 0xD 0xD 0x21B 0x3D

lacp count

LACPDUs Marker Marker Response LACPDUs
Port Sent Recv Sent Recv Sent Recv Pkts Err
Channel group: 13
Gi1/0/26 0 55 0 0 0 0 0
Gi2/0/26 3002 3007 0 0 0 0 0

Gi1/0/26 0 55 0 0 0 0 0 <<- this is issue, the port is Recv not send LACP that why port go to Suspend 
Gi2/0/26 3002 3007 0 0 0 0 0 <<- this healthy send Recv 

Please help i am facing this issue a second time. 

First time I raised the Cisco tag. they requested all the information and troubleshooted and resolved. if I follow the same steps I can't  able to resolve. what will be cause of this issue need a clear explaination.

LACP is simple concept. instead of trunk im using LACP. but still i can't able to resolve this issue. 

please help me to clear this issue. 

01001101 <<- 0X4D <<- this not normal check the lacp config, did you use any lacp not default, or peer use any un default LACP config ???

10110010 <<- flip bits

1=active 
0 = long timeout 
1= agg
1= In Sync 
0=Collecting NO 
0= Distribute NO
1= Defaulted
0= Expire

00111101 <<- 0x3D (normal Port Flag are 0x3D and 0x3F) 

10111100 <<- flip bits

1=active 
0 = long timeout 
1= agg
1= In Sync 
1=Collecting Yes
1= Distribute Yes
0= Defaulted NO
1= Expire

LACP flag.png

 

Hello
try the following:

CoreSW
default interface gig1/0/26
interface gig1/0/26
channel-group 13 mode active
no shut

PoeSW
default interface gig1/0/47
interface gig1/0/47
channel-group 1 mode active
no shut


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Kind Regards
Paul

already I've use it is not worked