03-12-2015 08:53 PM - edited 03-07-2019 11:04 PM
Hi all,
Can anyone advise why packet discard on Me-3400 switch interface and how to prevent.
ME-3400#sh interfaces counters errors
Port Align-Err FCS-Err Xmit-Err Rcv-Err UnderSize OutDiscards
Fa0/22 0 0 0 0 0 0
Fa0/23 0 0 0 0 0 0
Fa0/24 0 0 0 0 0 0
Gi0/1 0 0 0 0 0 1295422
Gi0/2 0 0 0 0 0 0
ME-3400#show platform port-asic stats drop gigabitEthernet 0/1
Interface Gi0/1 TxQueue Drop Statistics
Queue 0
Weight 0 Frames 0
Weight 1 Frames 0
Weight 2 Frames 0
Queue 1
Weight 0 Frames 0
Weight 1 Frames 0
Weight 2 Frames 0
Queue 2
Weight 0 Frames 0
Weight 1 Frames 0
Weight 2 Frames 0
Queue 3
Weight 0 Frames 0
Weight 1 Frames 0
Weight 2 Frames 17597741
Regards,
03-12-2015 09:06 PM
Can you please post the complete output to the following commands:
1. sh interface Gi0/1; and
2. sh controller e Gi0/1
03-12-2015 09:12 PM
Hi Please see the below output
ME-3400#sh int g0/1
GigabitEthernet0/1 is up, line protocol is up (connected)
Hardware is Gigabit Ethernet, address is 001d.e55a.9404 (bia 001d.e53a.9404)
Description: Uplink to ONS node, Ring1
MTU 1500 bytes, BW 100000 Kbit/sec, DLY 100 usec,
reliability 255/255, txload 1/255, rxload 14/255
Encapsulation ARPA, loopback not set
Keepalive not set
Full-duplex, 100Mb/s, link type is auto, media type is 100BaseFX-FE SFP
input flow-control is off, output flow-control is unsupported
ARP type: ARPA, ARP Timeout 04:00:00
Last input 00:00:00, output 8w0d, output hang never
Last clearing of "show interface" counters 18:07:29
Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 1295422
Queueing strategy: fifo
Output queue: 0/40 (size/max)
5 minute input rate 5744000 bits/sec, 534 packets/sec
5 minute output rate 0 bits/sec, 0 packets/sec
16868359 packets input, 20999750940 bytes, 0 no buffer
Received 1895959 broadcasts (1895959 multicasts)
0 runts, 0 giants, 0 throttles
0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored
0 watchdog, 1895959 multicast, 0 pause input
0 input packets with dribble condition detected
2867264 packets output, 3878717837 bytes, 0 underruns
0 output errors, 0 collisions, 0 interface resets
4470 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
ME-3400#sh controllers ethernet-controller gigabitEthernet 0/1
Transmit GigabitEthernet0/1 Receive
3301720825 Bytes 2155090175 Bytes
238880299 Unicast frames 2021694196 Unicast frames
6271171 Multicast frames 1903506910 Multicast frames
19 Broadcast frames 28204 Broadcast frames
0 Too old frames 2926964617 Unicast bytes
0 Deferred frames 816797850 Multicast bytes
0 MTU exceeded frames 1805056 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 771 Minimum size frames
0 8 collision frames 743915968 65 to 127 byte frames
0 9 collision frames 1269583754 128 to 255 byte frames
0 10 collision frames 3820879 256 to 511 byte frames
0 11 collision frames 99 512 to 1023 byte frames
0 12 collision frames 1907907839 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 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
14 64 byte frames 0 Valid frames, too small
31815139 127 byte frames
113920103 255 byte frames 0 Too old frames
22109 511 byte frames 0 Valid oversize frames
31738 1023 byte frames 0 System FCS error frames
99362383 1518 byte frames 0 RxPortFifoFull drop frame
3 Too large frames
0 Good (1 coll) frames
0 Good (>1 coll) frames
03-12-2015 09:35 PM
How big is your WAN link?
03-12-2015 10:41 PM
Its a 1g links, i want to now only why packet drop.. Is it normal ?
03-12-2015 10:41 PM
QOS config is below.
Class-map match-any output-ABC-network
match qos-group 3
match ip precedence 6
class-map match-all output-video
match qos-group 1
class-map match-all output-A
match qos-group 2
!
policy-map input-ABC
class class-default
set qos-group 3
policy-map input-video
class class-default
set qos-group 1
policy-map POLICE
class output-ABC-network
bandwidth percent 47
class output-A
bandwidth percent 10
class output-video
shape average 33000000
class class-default
shape average 10000000
policy-map input-A
class class-default
set qos-group 2
Class-map: class-default (match-any)
4209914 packets
Match: any
Output Queue:
Max queue-limit default threshold: 160
Tail Packets Drop: 1295422
Traffic Shaping
Average Rate Traffic Shaping
CIR 10000000 (bps)
Output Queue:
Max queue-limit default threshold: 160
Tail Packets Drop: 1295422
Policy apply in interface (POLICE)
Same thing policy map apply on link2 as well but link two no drops.
03-15-2015 12:59 AM
Hi ,
Could you please paste the complete output of sh poilicy-map interface gi0/1
Thanks,
Madhu
03-15-2015 08:45 PM
sh policy-map interface gigabitEthernet 0/1
GigabitEthernet0/1
Service-policy output: outpol
Class-map: A (match-any)
143793 packets
Match: qos-group 3
Match: ip precedence 6
Bandwidth percent 47 (47000000 bps)
Output Queue:
Max queue-limit default threshold: 160
Tail Packets Drop: 0
Class-map: B (match-all)
291045 packets
Match: qos-group 2
Bandwidth percent 10 (10000000 bps)
Output Queue:
Max queue-limit default threshold: 160
Tail Packets Drop: 0
Class-map: C (match-all)
113475 packets
Match: qos-group 1
Traffic Shaping
Average Rate Traffic Shaping
CIR 33000000 (bps)
Output Queue:
Max queue-limit default threshold: 160
Tail Packets Drop: 0
Class-map: class-default (match-any)
13369375 packets
Match: any
Output Queue:
Max queue-limit default threshold: 160
Tail Packets Drop: 2773117
Traffic Shaping
Average Rate Traffic Shaping
CIR 10000000 (bps)
Output Queue:
Max queue-limit default threshold: 160
Tail Packets Drop: 2773117
03-13-2015 12:02 AM
Its a 10g links, i want to now only why packet drop.. Is it normal ?
There must be some kind of mistake. It can't be 10 Gbps links because Gi0/1 is only 100BaseFx.
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