Wlc interface up-down frequently

Enamul.haque — Mon, 05 Jul 2021 19:52:53 GMT

Hi everyone

I have been facing a problem in the last few days. my 2504 wlc interface up and down frequently and for this aps and clients got to disconnect. I have change the Switch port, Wlc port, and cable and the problem remains the same. Please check below for the log:

346 Tue Dec 8 12:06:50 2020 Link Up: Slot: 0 Port: 1 Admin Status: Enable Oper Status: Link Up

347 Tue Dec 8 12:06:48 2020 Link Down: Slot: 0 Port: 1 Admin Status: Enable Oper Status: Link Down
348 Tue Dec 8 12:06:46 2020 Link Up: Slot: 0 Port: 1 Admin Status: Enable Oper Status: Link Up
349 Tue Dec 8 12:06:44 2020 Link Down: Slot: 0 Port: 1 Admin Status: Enable Oper Status: Link Down

Please help to solve this.

Re: Wlc interface up-down frequently

Leo Laohoo — Tue, 08 Dec 2020 06:54:42 GMT

Only 1 port enabled? What about the other ports?

Re: Wlc interface up-down frequently

Enamul.haque — Tue, 08 Dec 2020 06:56:18 GMT

Same problem with port number WLC num 2

Re: Wlc interface up-down frequently

Leo Laohoo — Tue, 08 Dec 2020 07:26:45 GMT

What model is the switch?

Re: Wlc interface up-down frequently

Enamul.haque — Tue, 08 Dec 2020 07:28:45 GMT

Cisco WS-C2960X-24PS-L

Re: Wlc interface up-down frequently

Leo Laohoo — Tue, 08 Dec 2020 09:21:51 GMT

@Enamul.haque wrote:

Cisco WS-C2960X-24PS-L

Post the complete output to the following command:

sh version
sh interface <PORT> controll

Re: Wlc interface up-down frequently

Enamul.haque — Tue, 08 Dec 2020 09:35:15 GMT

SW# show version
Cisco IOS Software, C2960X Software (C2960X-UNIVERSALK9-M), Version 15.2(2)E7, RELEASE SOFTWARE (fc3)
Technical Support: http://www.cisco.com/techsupport
Copyright (c) 1986-2017 by Cisco Systems, Inc.
Compiled Wed 12-Jul-17 13:06 by prod_rel_team

ROM: Bootstrap program is C2960X boot loader
BOOTLDR: C2960X Boot Loader (C2960X-HBOOT-M) Version 15.2(3r)E1, RELEASE SOFTWARE (fc1)

NGD-HO-2960X-13F-SW uptime is 2 weeks, 4 days, 3 hours, 37 minutes
System returned to ROM by power-on
System restarted at 11:51:07 BDT Fri Nov 20 2020
System image file is "flash:/c2960x-universalk9-mz.152-2.E7/c2960x-universalk9-mz.152-2.E7.bin"
Last reload reason: power-on

This product contains cryptographic features and is subject to United
States and local country laws governing import, export, transfer and
use. Delivery of Cisco cryptographic products does not imply
third-party authority to import, export, distribute or use encryption.
Importers, exporters, distributors and users are responsible for
compliance with U.S. and local country laws. By using this product you
agree to comply with applicable laws and regulations. If you are unable
to comply with U.S. and local laws, return this product immediately.

A summary of U.S. laws governing Cisco cryptographic products may be found at:
http://www.cisco.com/wwl/export/crypto/tool/stqrg.html

If you require further assistance please contact us by sending email to
export@cisco.com.

cisco WS-C2960X-24PS-L (APM86XXX) processor (revision S0) with 524288K bytes of memory.
Processor board ID FCW2142B5K5
Last reset from power-on
2 Virtual Ethernet interfaces
1 FastEthernet interface
28 Gigabit Ethernet interfaces
The password-recovery mechanism is enabled.

512K bytes of flash-simulated non-volatile configuration memory.
Base ethernet MAC Address : 00:27:90:AA:87:80
Motherboard assembly number : 73-16694-06
Power supply part number : 341-0528-02
Motherboard serial number : FOC21412QX9
Power supply serial number : LIT21362ZSZ
Model revision number : S0
Motherboard revision number : C0
Model number : WS-C2960X-24PS-L
Daughterboard assembly number : 73-14200-03
Daughterboard serial number : FOC214110BC
System serial number : FCW2142B5K5
Top Assembly Part Number : 68-100472-03
Top Assembly Revision Number : F0
Version ID : V05
CLEI Code Number : CMMLR00ARE
Daughterboard revision number : B0
Hardware Board Revision Number : 0x19

Switch Ports Model SW Version SW Image
------ ----- ----- ---------- ----------
* 1 28 WS-C2960X-24PS-L 15.2(2)E7 C2960X-UNIVERSALK9-M

Configuration register is 0xF

..............................................................................................................................................................................
SW#show interfaces gi1/0/13 controller
GigabitEthernet1/0/13 is up, line protocol is up (connected)
Hardware is Gigabit Ethernet, address is 0027.90aa.878d (bia 0027.90aa.878d)
MTU 1500 bytes, BW 1000000 Kbit/sec, DLY 10 usec,
reliability 255/255, txload 7/255, rxload 7/255
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 00:00:19, output 00:00:00, output hang never
Last clearing of "show interface" counters never
Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 737
Queueing strategy: fifo
Output queue: 0/40 (size/max)
5 minute input rate 30610000 bits/sec, 6318 packets/sec
5 minute output rate 29668000 bits/sec, 5379 packets/sec
139336511 packets input, 88362999836 bytes, 0 no buffer
Received 1311101 broadcasts (1219001 multicasts)
0 runts, 0 giants, 0 throttles
1 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored
0 watchdog, 1219001 multicast, 0 pause input
0 input packets with dribble condition detected
111557826 packets output, 85927905744 bytes, 0 underruns
0 output errors, 0 collisions, 1 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 GigabitEthernet1/0/13 Receive
30903950 Bytes 2466101912 Bytes
111150283 Unicast frames 138028923 Unicast frames
272659 Multicast frames 1219019 Multicast frames
137643 Broadcast frames 92102 Broadcast frames
0 Too old frames 1578951457 Unicast bytes
0 Deferred frames 370819087 Multicast bytes
0 MTU exceeded frames 7629209 Broadcast bytes
0 1 collision frames 0 Alignment errors
0 2 collision frames 0 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 12133074 Minimum size frames
0 8 collision frames 32013874 65 to 127 byte frames
0 9 collision frames 36405054 128 to 255 byte frames
0 10 collision frames 5130849 256 to 511 byte frames
0 11 collision frames 2920639 512 to 1023 byte frames
0 12 collision frames 49043562 1024 to 1518 byte frames
0 13 collision frames 0 Overrun frames
0 14 collision frames 0 Pause frames
0 15 collision frames
0 Excessive collisions 1 Symbol error frames
0 Late collisions 0 Invalid frames, too large
0 VLAN discard frames 1692993 Valid frames, too large
0 Excess defer frames 0 Invalid frames, too small
5695 64 byte frames 0 Valid frames, too small
10018135 127 byte frames
42209328 255 byte frames 0 Too old frames
5663744 511 byte frames 0 Valid oversize frames
2929893 1023 byte frames 0 System FCS error frames
34929601 1518 byte frames 0 RxPortFifoFull drop frame
15804189 Too large frames
0 Good (1 coll) frames
0 Good (>1 coll) frames

Re: Wlc interface up-down frequently

Leo Laohoo — Tue, 08 Dec 2020 10:15:56 GMT

What firmware is the controller running on?

Re: Wlc interface up-down frequently

Enamul.haque — Tue, 08 Dec 2020 10:18:05 GMT

8.5.161.0

Re: Wlc interface up-down frequently

Leo Laohoo — Tue, 08 Dec 2020 12:06:25 GMT

May I see the logs on the switch showing the downstream port to the WLC are going down/up?

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Wlc interface up-down frequently

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Re: Wlc interface up-down frequently