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Cisco SW ( C9200 ) Not Learning Dynamic MAC

NOC_Infonet
Level 1
Level 1

Hii all,

We are facing dynamic MAC not learn in physical interface, Once reload the SW manually working fine in two weeks, After the two weeks, again facing the same issue.       

Cisco_SW# show mac address-table interface Gi1/0/1
Mac Address Table
-------------------------------------------

Vlan Mac Address Type Ports
---- ----------- -------- -----
Cisco_SW# show mac address-table interface Gi1/0/4
Mac Address Table
-------------------------------------------

Vlan Mac Address Type Ports
---- ----------- -------- -----

Kindly refer the above mentioned log and give permanent solution. 

9 Replies 9

can you share 

show version

sh interface gi 1/0/1

sh interface gi 1/0/4

sh run int gi 1/0/1

sh run int gi 1/0/4

Please rate this and mark as solution/answer, if this resolved your issue
Good luck
KB

Hi Kasun Bandara,

Cisco_SW#show version
Cisco IOS XE Software, Version 17.01.01
Cisco IOS Software [Amsterdam], Catalyst L3 Switch Software (CAT9K_LITE_IOSXE), Version 17.1.1, RELEASE SOFTWARE (fc3)
Technical Support: *******
Copyright (c) 1986-2019 by Cisco Systems, Inc.
Compiled Fri 22-Nov-19 00:55 by mcpre


Cisco IOS-XE software, Copyright (c) 2005-2019 by cisco Systems, Inc.
All rights reserved. Certain components of Cisco IOS-XE software are
licensed under the GNU General Public License ("GPL") Version 2.0. The
software code licensed under GPL Version 2.0 is free software that comes
with ABSOLUTELY NO WARRANTY. You can redistribute and/or modify such
GPL code under the terms of GPL Version 2.0. For more details, see the
documentation or "License Notice" file accompanying the IOS-XE software,
or the applicable URL provided on the flyer accompanying the IOS-XE
software.


ROM: IOS-XE ROMMON
BOOTLDR: System Bootstrap, Version 17.1.1r [FC3], RELEASE SOFTWARE (P)

Cisco_SW uptime is 13 weeks, 6 days, 20 hours, 23 minutes
Uptime for this control processor is 13 weeks, 6 days, 20 hours, 24 minutes
System returned to ROM by Reload Command
System image file is*********
Last reload reason: Reload Command

 

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
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A summary of U.S. laws governing Cisco cryptographic products may be found at:
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Technology Package License Information:

------------------------------------------------------------------------------
Technology-package Technology-package
Current Type Next reboot
------------------------------------------------------------------------------
network-essentials Smart License network-essentials
None Subscription Smart License None


Smart Licensing Status: UNREGISTERED/EVAL EXPIRED

cisco C9200L-24P-4G (ARM64) processor with 519837K/3071K bytes of memory.
Processor board ID JAE232207K4
9 Virtual Ethernet interfaces
28 Gigabit Ethernet interfaces
2048K bytes of non-volatile configuration memory.
2015296K bytes of physical memory.
819200K bytes of Crash Files at crashinfo:.
1941504K bytes of Flash at flash:.

Base Ethernet MAC Address : 5c:5a:c7:9a:0c:00
Motherboard Assembly Number : 73-18699-05
Motherboard Serial Number : JAE232207K4
Model Revision Number : E0
Motherboard Revision Number : A0
Model Number : C9200L-24P-4G
System Serial Number : ******
CLEI Code Number : INM6E00ARA


Switch Ports Model SW Version SW Image Mode
------ ----- ----- ---------- ---------- ----
* 1 28 C9200L-24P-4G 17.01.01 CAT9K_LITE_IOSXE BUNDLE


Configuration register is 0x142 (will be 0x102 at next reload)

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

Cisco_SW#sh interface gi 1/0/1
GigabitEthernet1/0/1 is up, line protocol is up (connected)
Hardware is Gigabit Ethernet, address is 5c5a.c79a.0c01 (bia 5c5a.c79a.0c01)
MTU 1550 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 00:00:00, output hang never
Last clearing of "show interface" counters never
Input queue: 0/2000/0/0 (size/max/drops/flushes); Total output drops: 8939503
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
763452746 packets input, 228441837459 bytes, 0 no buffer
Received 430757 broadcasts (214690 multicasts)
0 runts, 0 giants, 0 throttles
15 input errors, 11 CRC, 0 frame, 0 overrun, 0 ignored
0 watchdog, 214690 multicast, 0 pause input
0 input packets with dribble condition detected
1929449329 packets output, 2202013007391 bytes, 0 underruns
0 output errors, 0 collisions, 2 interface resets
253579 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
------------------------------------------------------------------------

Cisco_SW#sh run int gi 1/0/1
Building configuration...

Current configuration : 134 bytes
!
interface GigabitEthernet1/0/1
switchport mode trunk
power inline never
service-policy input BW-1
service-policy output BW
end

suggest upgrading 17.3.5 or 17.6.4 and test it.

On another note I see a lot of  -253579 unknown protocol drops

BB

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How to Ask The Cisco Community for Help

ammahend
VIP
VIP

I am sure you have verified after some active traffic, Dynamic Mac is cleared after 300 seconds if there is no traffic.

Can Potentially be a bug, as kasun recommended send those outputs

-hope this helps-

many many reason for that, include as @Kasun Bandara and @ammahend mention is bug 
but can you share the output 

Switch#show platform hardware fed active fwd-asic resource tcam utilization

Hi Sir,

I have attached log FYI.

Cisco_SW#show platform hardware fed switch active fwd-asic resource tcam utilization
CAM Utilization for ASIC [0]
Table Max Values Used Values
--------------------------------------------------------------------------------
Unicast MAC addresses 16384/256 23/21
L3 Multicast entries 1024/256 0/9
L2 Multicast entries 1024 13
Directly or indirectly connected routes 8192/3072 7/20
QoS Access Control Entries 1024 125
Security Access Control Entries 1408 128
Ingress Netflow ACEs 128 6
Policy Based Routing ACEs 512 9
Egress Netflow ACEs 128 6
Flow SPAN ACEs 256 13
Control Plane Entries 512 239
Tunnels 128 17
Lisp Instance Mapping Entries 128 3
SGT_DGT 2048/256 0/1
CLIENT_LE 2048/64 0/0
INPUT_GROUP_LE 1024 0
OUTPUT_GROUP_LE 1024 0
Macsec SPD 128 2

Hi all,

The issue is still not resolved, Kindly refer the above mentioned loges and give permeant solution.   

are you run any 802.1x ??

still this issue not solved??