05-23-2011 10:29 AM - last edited on 03-07-2019 12:38 AM by NikolaIvanov
Hi everybody!
Gig0/1 is a physical on the 3550 that is connected to a 4503.
Sometimes i drops packets when i do ping to 3550 from 4503 when QoS is enable... then i disable QoS... every comes back to normal again..
I see a lot of input drops on the SVI and none on the physical.
CPU always is between 1% & 6%...
CEF enable
Portbased QoS
IOS: c3550-ipservicesk9-mz.122-25.SEB4.bin
---------------
interface Vlan189
description INTERFACE DE ADMINISTRACION
ip address 192.168.10.13 255.255.255.0
---------------
interface GigabitEthernet0/1
description Hacia 4503 G2/1
switchport trunk encapsulation dot1q
switchport mode trunk
switchport nonegotiate
logging event trunk-status
wrr-queue bandwidth 8 2 10 1
wrr-queue queue-limit 8 2 10 1
wrr-queue random-detect max-threshold 1 70 100
wrr-queue cos-map 1 0 1 2
wrr-queue cos-map 2 3 6 7
wrr-queue cos-map 3 4
wrr-queue cos-map 4 5
wrr-queue dscp-map 2 8 9 10 11 12 13 14 15
wrr-queue dscp-map 2 48 49 50 51 52 53 54 55
wrr-queue dscp-map 2 56 57 58 59 60 61 62 63
priority-queue out
spanning-tree bpdufilter enable
spanning-tree bpduguard enable
---------------
CSC003550#show processes CPU | i ^PID|Input
7 1235680 6282831 196 0.00% 0.00% 0.00% 0 ARP Input
15 4 391 10 0.00% 0.00% 0.00% 0 Net Input
62 25573588 225985662 113 0.07% 0.01% 0.00% 0 IP Input
74 0 1 0 0.00% 0.00% 0.00% 0 RARP Input
---------------
CSC003550#sh processes cpu | exc 0.00% 0.00% 0.00%
CPU utilization for five seconds: 1%/0%; one minute: 1%; five minutes: 1%
PID Runtime(ms) Invoked uSecs 5Sec 1Min 5Min TTY Process
4 93772812 17669170 5307 0.07% 0.05% 0.05% 0 Check heaps
14 481408 154849984 3 0.07% 0.00% 0.00% 0 Dynamic ARP Insp
35 619957284 463959941 1336 0.63% 0.61% 0.61% 0 Vegas Statistics
40 150350728 387210440 388 0.00% 0.01% 0.00% 0 L3MD_STAT
45 436375288 154848915 2818 0.00% 0.04% 0.06% 0 PI MATM Aging Pr
62 25573688 225986069 113 0.00% 0.04% 0.01% 0 IP Input
113 29083052 120666293 241 0.00% 0.03% 0.00% 0 IP SNMP
115 43969164 60788092 723 0.00% 0.08% 0.06% 0 SNMP ENGINE
121 1624 260345 6 0.15% 0.31% 0.18% 1 Virtual Exec
---------------
CSC003550#sh int summary
*: interface is up
IHQ: pkts in input hold queue IQD: pkts dropped from input queue
OHQ: pkts in output hold queue OQD: pkts dropped from output queue
RXBS: rx rate (bits/sec) RXPS: rx rate (pkts/sec)
TXBS: tx rate (bits/sec) TXPS: tx rate (pkts/sec)
TRTL: throttle count
Interface IHQ IQD OHQ OQD RXBS RXPS TXBS TXPS TRTL
------------------------------------------------------------------------
Vlan1 0 0 0 0 0 0 0 0 0
* Vlan189 2 526169 0 8 1000 2 1000 2 0
FastEthernet0/1 0 0 0 0 0 0 0 0 0
* FastEthernet0/2 0 0 0 0 499000 55 1000 2 0
* FastEthernet0/3 0 0 0 0 0 0 0 0 0
* FastEthernet0/4 0 0 0 0 0 0 1000 1 0
* FastEthernet0/5 0 0 0 0 0 0 0 0 0
FastEthernet0/6 0 0 0 0 0 0 0 0 0
* FastEthernet0/7 0 0 0 0 2628000 281 77000 140 0
FastEthernet0/8 0 0 0 0 0 0 0 0 0
* FastEthernet0/9 0 0 0 0 0 0 0 0 0
* FastEthernet0/10 0 0 0 0 211000 183 250000 178 0
* FastEthernet0/11 0 0 0 0 722000 1101 9781000 13168 0
* FastEthernet0/12 0 0 0 0 248000 62 6000 4 0
* FastEthernet0/13 0 0 0 0 0 0 0 0 0
FastEthernet0/14 0 0 0 0 0 0 0 0 0
FastEthernet0/15 0 0 0 0 0 0 0 0 0
* FastEthernet0/16 0 0 0 0 313000 503 8841000 11829 0
* FastEthernet0/17 0 0 0 0 2021000 3270 3456000 5220 0
* FastEthernet0/18 0 0 0 0 0 0 1000 1 0
* FastEthernet0/19 0 0 0 0 0 0 0 0 0
* FastEthernet0/20 0 0 0 0 0 0 0 0 0
* FastEthernet0/21 0 0 0 0 1575000 2610 9490000 12314 0
* FastEthernet0/22 0 0 0 0 3795000 5892 14527000 18787 0
* FastEthernet0/23 0 0 0 0 884000 1248 10081000 12620 0
FastEthernet0/24 0 0 0 0 0 0 0 0 0
* GigabitEthernet0/1 0 0 0 0 51457000 35202 21168000 18585 0
* GigabitEthernet0/2 0 0 0 0 7783000 3193 27372000 3657 0
NOTE:No separate counters are maintained for subinterfaces
Hence Details of subinterface are not shown
---------------
CSC003550#sh int gigabitEthernet 0/1
GigabitEthernet0/1 is up, line protocol is up (connected)
Hardware is Gigabit Ethernet, address is 000e.XXXX.XXXX (bia 000e.XXXX.XXXX)
Description: Hacia 4503 G2/1
MTU 1500 bytes, BW 1000000 Kbit, DLY 10 usec,
reliability 255/255, txload 5/255, rxload 13/255
Encapsulation ARPA, loopback not set
Keepalive not set
Full-duplex, 1000Mb/s, link type is auto, media type is 1000BaseLX
input flow-control is off, output flow-control is on
ARP type: ARPA, ARP Timeout 04:00:00
Last input 00:00:01, output 00:00:01, output hang never
Last clearing of "show interface" counters never
Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 0
Queueing strategy: fifo
Output queue: 0/40 (size/max)
5 minute input rate 52518000 bits/sec, 34986 packets/sec
5 minute output rate 21180000 bits/sec, 18880 packets/sec
1688323836 packets input, 3495020720 bytes, 0 no buffer
Received 4195837864 broadcasts (0 multicast)
0 runts, 0 giants, 0 throttles
0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored
0 watchdog, 3070347321 multicast, 0 pause input
0 input packets with dribble condition detected
2225029844 packets output, 126310454 bytes, 0 underruns
0 output errors, 0 collisions, 1 interface resets
0 babbles, 0 late collision, 0 deferred
0 lost carrier, 0 no carrier, 7457268 PAUSE output
0 output buffer failures, 0 output buffers swapped out
---------------
CSC003550#sh int vlan189
Vlan189 is up, line protocol is up
Hardware is EtherSVI, address is 000e.xxxx.xxxx (bia 000e.xxxx.xxxx)
Description: INTERFACE DE ADMINISTRACION
Internet address is 192.168.10.13/24
MTU 1500 bytes, BW 1000000 Kbit, DLY 10 usec,
reliability 255/255, txload 1/255, rxload 1/255
Encapsulation ARPA, loopback not set
ARP type: ARPA, ARP Timeout 04:00:00
Last input 00:00:00, output 00:00:00, output hang never
Last clearing of "show interface" counters never
Input queue: 2/75/526169/0 (size/max/drops/flushes); Total output drops: 8
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
226797838 packets input, 4274952407 bytes, 0 no buffer
Received 0 broadcasts (546 IP multicast)
0 runts, 0 giants, 0 throttles
0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored
72905528 packets output, 84486007 bytes, 0 underruns
0 output errors, 0 interface resets
0 output buffer failures, 0 output buffers swapped out
---------------
GigabitEthernet0/1
Ingress
dscp: incoming no_change classified policed dropped (in bytes)
Others: 4064142786 4051769221 12373719 0 0
Egress
dscp: incoming no_change classified policed dropped (in bytes)
Others: 987984790 n/a n/a 0 0
WRED drop counts:
qid thresh1 thresh2 FreeQ
1 : 0 0 1024
2 : 0 0 1024
3 : 0 0 1024
4 : 0 0 1024
Thanks!!
Kenneth Rodriguez
05-23-2011 10:45 AM
First thing I notice here is your PAUSE output:
CSC003550#sh int gigabitEthernet 0/1
GigabitEthernet0/1 is up, line protocol is up (connected)
Hardware is Gigabit Ethernet, address is 000e.XXXX.XXXX (bia 000e.XXXX.XXXX)
Description: Hacia 4503 G2/1
MTU 1500 bytes, BW 1000000 Kbit, DLY 10 usec,
reliability 255/255, txload 5/255, rxload 13/255
Encapsulation ARPA, loopback not set
Keepalive not set
Full-duplex, 1000Mb/s, link type is auto, media type is 1000BaseLX
input flow-control is off, output flow-control is on
ARP type: ARPA, ARP Timeout 04:00:00
Last input 00:00:01, output 00:00:01, output hang never
Last clearing of "show interface" counters never
Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 0
Queueing strategy: fifo
Output queue: 0/40 (size/max)
5 minute input rate 52518000 bits/sec, 34986 packets/sec
5 minute output rate 21180000 bits/sec, 18880 packets/sec
1688323836 packets input, 3495020720 bytes, 0 no buffer
Received 4195837864 broadcasts (0 multicast)
0 runts, 0 giants, 0 throttles
0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored
0 watchdog, 3070347321 multicast, 0 pause input
0 input packets with dribble condition detected
2225029844 packets output, 126310454 bytes, 0 underruns
0 output errors, 0 collisions, 1 interface resets
0 babbles, 0 late collision, 0 deferred
0 lost carrier, 0 no carrier, 7457268 PAUSE output
0 output buffer failures, 0 output buffers swapped out
You may want to read up on this particular type of frame. It halts transmission, which in a QoS environment isn't the best thing to have. Take a read (short read, no worries).
http://en.wikipedia.org/wiki/Ethernet_flow_control
Please rate if helpful.
05-23-2011 11:00 AM
Exc!!! Antonio.. i will check tonight!
Thanks!
Kenneth Rodriguez
05-23-2011 11:02 AM
Glad to help.
Please rate helpful posts.
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