06-04-2018 11:57 PM - edited 03-08-2019 03:14 PM
Hello All
I am facing one issue today,
I have 4 switch stack(2960x).
4 ports of switch have some issue( Gi 4/0/19 to 4/0/22)
Issue is like below.
When login, and check the status of these ports . it shows UP.
But physical LED of that port is down and not working.
I check same cable to connect with other port of same switch (Gi4/0/45)
then it works fine.no err-disable or any looping issue.!!
Speed and duplex are default from both side(user and port).
Can any one have any idea what may be the issue. ??
06-05-2018 12:19 AM
Hello,
could be a bug...which IOS version are running ? Are the PoE ports ?
06-05-2018 12:32 AM
Version- 15.2(2)E7 ,
yes Its PoE enabled switch
06-05-2018 12:34 AM
06-05-2018 12:37 AM
Check below..
GigabitEthernet4/0/19 is up, line protocol is up (connected)
Hardware is Gigabit Ethernet, address is b4a8.b95e.da93 (bia b4a8.b95e.da93)
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 set (10 sec)
Full-duplex, 1000Mb/s, media type is 10/100/1000BaseTX
input flow-control is off, output flow-control is unsupported
ARP type: ARPA, ARP Timeout 04:00:00
Last input never, output 00:00:03, output hang never
Last clearing of "show interface" counters never
Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 1387
Queueing strategy: fifo
Output queue: 0/40 (size/max)
5 minute input rate 0 bits/sec, 0 packets/sec
5 minute output rate 1000 bits/sec, 1 packets/sec
32089158 packets input, 7456502675 bytes, 0 no buffer
Received 155477 broadcasts (133064 multicasts)
0 runts, 0 giants, 0 throttles
3 input errors, 3 CRC, 0 frame, 0 overrun, 0 ignored
0 watchdog, 133064 multicast, 1 pause input
0 input packets with dribble condition detected
73110049 packets output, 71069918554 bytes, 0 underruns
0 output errors, 0 collisions, 3 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
Transmit GigabitEthernet4/0/19 Receive
2350443739 Bytes 3161535379 Bytes
63550406 Unicast frames 31933681 Unicast frames
6135611 Multicast frames 133064 Multicast frames
3424053 Broadcast frames 22413 Broadcast frames
0 Too old frames 3148732424 Unicast bytes
0 Deferred frames 9103342 Multicast bytes
0 MTU exceeded frames 3698523 Broadcast bytes
0 1 collision frames 0 Alignment errors
0 2 collision frames 3 FCS errors
0 3 collision frames 0 Oversize frames
0 4 collision frames 0 Undersize frames
0 5 collision frames 0 Collision fragments
0 6 collision frames
0 7 collision frames 20737102 Minimum size frames
0 8 collision frames 2438702 65 to 127 byte frames
0 9 collision frames 3184737 128 to 255 byte frames
0 10 collision frames 2009873 256 to 511 byte frames
0 11 collision frames 1098307 512 to 1023 byte frames
0 12 collision frames 2620441 1024 to 1518 byte frames
0 13 collision frames 0 Overrun frames
0 14 collision frames 1 Pause frames
0 15 collision frames
0 Excessive collisions 0 Symbol error frames
0 Late collisions 0 Invalid frames, too large
0 VLAN discard frames 0 Valid frames, too large
0 Excess defer frames 0 Invalid frames, too small
5932857 64 byte frames 0 Valid frames, too small
11941403 127 byte frames
8113299 255 byte frames 0 Too old frames
1624702 511 byte frames 0 Valid oversize frames
1163557 1023 byte frames 0 System FCS error frames
44334252 1518 byte frames 0 RxPortFifoFull drop frame
0 Too large frames
0 Good (1 coll) frames
0 Good (>1 coll) frames
06-05-2018 12:46 AM
06-05-2018 01:17 AM
then it works, only mentioned ports (Gi 4/0/19 to 22) have this issue, even these ports were also working fine earlier .
06-05-2018 12:51 AM
Hello,
what is the uptime of the switch (show version) ?
06-05-2018 01:19 AM
uptime = 18 weeks,
06-05-2018 01:42 AM
06-05-2018 12:53 AM - edited 06-05-2018 12:56 AM
Hello
Unfortunately ports do break, more so if they are POE - You cold try defaulting the interfaces check some statistics but it sounds like the ports are possible broken.
default int ran gig1/0/19 -22
sh interface gig1/0/xx status
test interfaces gig1/0/x
sh interface gig1/0 controller
show power inline gig1/0/x (if applicable)
res
Paul
06-05-2018 01:33 AM
Right now , now physical connection to this port (Gi 4/0/19) but it is still showing UP in status, but LED is down. other asked details are as below. after defaulting the port.
CINSUR01MKTSTK01#sho interfaces gigabitEthernet 4/0/19 status
Port Name Status Vlan Duplex Speed Type
Gi4/0/19 connected 1 a-full a-1000 10/100/1000BaseTX
CINSUR01MKTSTK01#test interfaces gigabitEthernet 4/0/19
No IP address for GigabitEthernet4/0/19.
Skipping...
1 interfaces: 0 passed, 0 failed, 0 skipped, 1 untestable
CINSUR01MKTSTK01#show power inline gigabitEthernet 4/0/19
Interface Admin Oper Power Device Class Max
(Watts)
--------- ------ ---------- ------- ------------------- ----- ----
Gi4/0/19 auto off 0.0 n/a n/a 30.0
Interface AdminPowerMax AdminConsumption
(Watts) (Watts)
---------- --------------- --------------------
Gi4/0/19 30.0 15.4
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