11-13-2023 12:22 AM
Hi,
I got some 9200L switches with some drops, some people are complaining about Teams meatings are bad, when i checked the switch i could find these drops. Maybe these drops do not have a big effect on the overall switching process, but I wonder why do these happen.
I checked this guide:
I tried to do as the guide says but still have drops:
sh interfaces | in Total output drops:
Input queue: 0/375/0/0 (size/max/drops/flushes); Total output drops: 0
Input queue: 0/375/0/0 (size/max/drops/flushes); Total output drops: 0
Input queue: 0/375/0/0 (size/max/drops/flushes); Total output drops: 0
Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 0
Input queue: 0/2000/0/0 (size/max/drops/flushes); Total output drops: 758
Input queue: 0/2000/0/0 (size/max/drops/flushes); Total output drops: 0
Input queue: 0/2000/0/0 (size/max/drops/flushes); Total output drops: 644
Input queue: 0/2000/0/0 (size/max/drops/flushes); Total output drops: 1224
Input queue: 0/2000/0/0 (size/max/drops/flushes); Total output drops: 1944
Input queue: 0/2000/0/0 (size/max/drops/flushes); Total output drops: 295
Input queue: 0/2000/0/0 (size/max/drops/flushes); Total output drops: 868
Input queue: 0/2000/0/0 (size/max/drops/flushes); Total output drops: 144
Input queue: 0/2000/0/0 (size/max/drops/flushes); Total output drops: 5030
Input queue: 0/2000/0/0 (size/max/drops/flushes); Total output drops: 1670
Input queue: 0/2000/0/0 (size/max/drops/flushes); Total output drops: 385
Input queue: 0/2000/0/0 (size/max/drops/flushes); Total output drops: 950
Input queue: 0/2000/0/0 (size/max/drops/flushes); Total output drops: 0
Input queue: 0/2000/0/0 (size/max/drops/flushes); Total output drops: 2383
Input queue: 0/2000/0/0 (size/max/drops/flushes); Total output drops: 392
Input queue: 0/2000/0/0 (size/max/drops/flushes); Total output drops: 2353
Input queue: 0/2000/0/0 (size/max/drops/flushes); Total output drops: 1570
Input queue: 0/2000/0/0 (size/max/drops/flushes); Total output drops: 798
Input queue: 0/2000/0/0 (size/max/drops/flushes); Total output drops: 0
Input queue: 0/2000/0/0 (size/max/drops/flushes); Total output drops: 1304
Input queue: 0/2000/0/0 (size/max/drops/flushes); Total output drops: 0
Input queue: 0/2000/0/0 (size/max/drops/flushes); Total output drops: 0
Input queue: 0/2000/0/0 (size/max/drops/flushes); Total output drops: 0
Input queue: 0/2000/0/0 (size/max/drops/flushes); Total output drops: 89
Input queue: 0/2000/0/0 (size/max/drops/flushes); Total output drops: 0
Input queue: 0/2000/0/0 (size/max/drops/flushes); Total output drops: 0
Input queue: 0/2000/0/0 (size/max/drops/flushes); Total output drops: 0
Input queue: 0/2000/0/0 (size/max/drops/flushes); Total output drops: 0
My configuration looks like this:
policy-map QOS_Q_OUT
class VOICE
priority level 1 percent 10
queue-buffers ratio 5
class class-default
bandwidth remaining percent 100
queue-buffers ratio 55
!
interface GigabitEthernet1/0/3
switchport access vlan 419
switchport mode access
ip flow monitor FLOW-MON input
spanning-tree portfast
service-policy output QOS_Q_OUT
!
All interfaces have the same confiuration!!
Any ideas on how to improve my configuration to have less drops.
It is weird to have thses drops but not showing these when trying this command:
show platform hardware fed switch active qos queue stats interface gi 1/0/4
show platform hardware fed switch active qos queue stats interface gigabitEthernet 1/0/4
----------------------------------------------------------------------------------------------
AQM Global counters
GlobalHardLimit: 2875 | GlobalHardBufCount: 0
GlobalSoftLimit: 10437 | GlobalSoftBufCount: 0
----------------------------------------------------------------------------------------------
High Watermark Soft Buffers: Port Monitor Disabled
----------------------------------------------------------------------------------------------
Asic:0 Core:0 DATA Port:7 Hardware Enqueue Counters
-------------------------------------------------------------------------
Q Buffers Enqueue-TH0 Enqueue-TH1 Enqueue-TH2
(Count) (Bytes) (Bytes) (Bytes)
-- ------- -------------------- -------------------- --------------------
0 0 0 0 203139
1 0 0 0 278708956
2 0 0 0 0
3 0 0 0 0
4 0 0 0 0
5 0 0 0 0
6 0 0 0 0
7 0 0 0 0
Asic:0 Core:0 DATA Port:7 Hardware Drop Counters
-----------------------------------------------------------------------------------------------------------
Q Drop-TH0 Drop-TH1 Drop-TH2 SBufDrop QebDrop
(Bytes) (Bytes) (Bytes) (Bytes) (Bytes)
-- -------------------- -------------------- -------------------- -------------------- --------------------
0 0 0 0 0 0
1 0 0 0 0 0
2 0 0 0 0 0
3 0 0 0 0 0
4 0 0 0 0 0
5 0 0 0 0 0
6 0 0 0 0 0
7 0 0 0 0 0
sh inter gigabitEthernet 1/0/4
GigabitEthernet1/0/4 is up, line protocol is up (connected)
Hardware is Gigabit Ethernet, address is 8c84.4248.6804 (bia 8c84.4248.6804)
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 on, output flow-control is unsupported
ARP type: ARPA, ARP Timeout 04:00:00
Last input 00:05:32, output 00:00:01, output hang never
Last clearing of "show interface" counters 8w6d
Input queue: 0/2000/0/0 (size/max/drops/flushes); Total output drops: 1224
Queueing strategy: Class-based queueing
Output queue: 0/40 (size/max)
5 minute input rate 8000 bits/sec, 1 packets/sec
5 minute output rate 17000 bits/sec, 7 packets/sec
62003445 packets input, 56167278049 bytes, 0 no buffer
Received 72901 broadcasts (64715 multicasts)
0 runts, 0 giants, 0 throttles
0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored
0 watchdog, 64715 multicast, 0 pause input
0 input packets with dribble condition detected
83141837 packets output, 67288428361 bytes, 0 underruns
Output 579517 broadcasts (2391039 multicasts)
0 output errors, 0 collisions, 0 interface resets
1136 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
Do my configuration do some job?! Why ?
Any ideas
11-13-2023 12:26 AM
11-13-2023 12:41 AM
That command is already there:
!
login on-success log
qos queue-softmax-multiplier 1200
!
11-13-2023 12:51 AM
sw#show platform qos queue config gigabitEthernet x/x/x
share output of this for one of port face output drop
Thanks A Lot
MHM
11-13-2023 01:07 AM
My switch does not support "show platform qos"!
show platform ?
arpsnooping ARP snooping
atm-cdvt Display platform atm cdvt value
authentication Show switch auth info
conditions Show conditional debug info
dhcpsnooping DHCP snooping
dhcpv6snooping DHCP v6 snooping
diag Diagnostic information
fabric SDA fabric related information
flow Show Platform flow for FNF Information
frontend-controller Show frontend controller info
hardware Show platform hardware information
host-access-table host access table info
idbman Interface Descriptor Block management information
integrity Boot integrity
l2lisp platform l2lisp
matm show platform matm info
mcu show platform mcu information
oir NGWC OIR
packet-trace CPP packet trace information
pm Show Platform Port Manager Info
resources Show platform resources information
software Show platform software information
sudi Secure identity
usb Show Platform USB Information
wdavc Show Platform wdavc config info
| Output modifiers
<cr> <cr>
11-13-2023 01:09 AM
9300#show platform hardware fed switch active qos queue config interface gigabitEthernet x/x/x
11-13-2023 01:17 AM
show platform hardware fed switch active qos queue config interface gigabitEthernet 1/0/4
Asic:0 Core:0 DATA Port:7 GPN:4 LinkSpeed:0x1
AFD:Disabled FlatAFD:Disabled QoSMap:0 HW Queues: 56 - 63
DrainFast:Disabled PortSoftStart:3 - 7500
DTS Hardmax Softmax PortSMin GlblSMin PortStEnd QEnable
----- -------- -------- -------- -------- --------- -------
0 1 7 51 7 51 0 0 0 0 4 10000 En
1 1 5 0 8 7344 3 688 1 229 4 10000 En
2 1 5 0 6 0 0 0 0 0 4 10000 En
3 1 5 0 6 0 0 0 0 0 4 10000 En
4 1 5 0 6 0 0 0 0 0 4 10000 En
5 1 5 0 6 0 0 0 0 0 4 10000 En
6 1 5 0 6 0 0 0 0 0 4 10000 En
7 1 5 0 6 0 0 0 0 0 4 10000 En
Priority Shaped/shared weight shaping_step sharpedWeight
-------- ------------- ------ ------------ -------------
0 1 Shaped 2550 255 0
1 7 Shared 50 0 0
2 0 Shared 10000 0 0
3 0 Shared 10000 0 0
4 0 Shared 10000 0 0
5 0 Shared 10000 0 0
6 0 Shared 10000 0 0
7 0 Shared 10000 0 0
Port Port Port Port
Priority Shaped/shared weight shaping_step
-------- ------------- ------ ------------
2 Shaped 254 255
Weight0 Max_Th0 Min_Th0 Weigth1 Max_Th1 Min_Th1 Weight2 Max_Th2 Min_Th2
------- ------- ------- ------- ------- ------- ------- ------- ------
0 0 81 0 0 90 0 0 102 0
1 0 5852 0 0 6540 0 0 7344 0
2 0 0 0 0 0 0 0 0 0
3 0 0 0 0 0 0 0 0 0
4 0 0 0 0 0 0 0 0 0
5 0 0 0 0 0 0 0 0 0
6 0 0 0 0 0 0 0 0 0
7 0 0 0 0 0 0 0 0 0
11-13-2023 01:28 AM
that not good at all,
I will check the Queue you use and send you the correct one
or you can use Cisco value
policy-map MYPOL
class Voice
priority level 1 percent 20
class Video
priority level 2 percent 10
class Control
bandwidth percent 10
class Data
bandwidth percent 5
class class-default
Thanks A Lot
MHM
11-13-2023 01:33 AM
Please send what you are using so I can have different ways to go
11-13-2023 01:34 AM
Take off the QoS settings and see if it improve things.
11-13-2023 01:36 AM
I started to use QoS because I had drops. I mean taking them out will not improve my case. This is happening in many 9200L switches!
11-13-2023 02:23 AM
What are the downstream clients, are they servers?
11-13-2023 02:48 AM
no, only normal windows clients which do much Teams meatings!
11-13-2023 02:00 AM
11-13-2023 05:23 AM
The OP doesn't provide sufficient information to analyze your Teams issue. Actual drops are likely not directly adverse to your Team's traffic but possibly deep queuing might be. What queue is your Team's traffic directed to?
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