I am seeing over a million outputs drops per day. This is a 100Mb mpls connection that is shaping down to 10. Is there any way to improve on my drops ? Do I need to up my queue limit on this interface and if so, what would be a good number to use. I’m not sure how to tweak this without breaking things. I’m really only seeing this issue in the best effort queue. Cisco IOS Software, C2900 Software (C2900-UNIVERSALK9-M), Version 15.0(1)M4, RELEASE SOFTWARE (fc1) interface GigabitEthernet0/1 description QWEST ELA ip address x.x.x.x ip flow ingress ip flow egress duplex full speed 100 service-policy output ELA_SHAPING_POLICY GigabitEthernet0/1 is up, line protocol is up Hardware is CN Gigabit Ethernet, address is 6400.f164.baa9 (bia 6400.f164.baa9) Description: QWEST ELA Internet address is 63.231.1.138/30 MTU 1500 bytes, BW 100000 Kbit/sec, DLY 100 usec, reliability 255/255, txload 17/255, rxload 1/255 Encapsulation ARPA, loopback not set Keepalive set (10 sec) Full-duplex, 100Mb/s, media type is RJ45 output flow-control is unsupported, input flow-control is unsupported ARP type: ARPA, ARP Timeout 04:00:00 Last input 00:00:03, output 00:00:00, output hang never Last clearing of "show interface" counters 12w1d Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 22927282 Queueing strategy: Class-based queueing Output queue: 0/1000/0 (size/max total/drops) 5 minute input rate 287000 bits/sec, 233 packets/sec 5 minute output rate 6807000 bits/sec, 1215 packets/sec 1140353458 packets input, 203684093 bytes, 0 no buffer Received 0 broadcasts, 0 runts, 0 giants, 0 throttles 0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored 0 watchdog, 0 multicast, 0 pause input GigabitEthernet0/1 Service-policy output: ELA_SHAPING_POLICY Class-map: class-default (match-any) 3224094436 packets, 1840099533264 bytes 5 minute offered rate 6800000 bps, drop rate 21000 bps Match: any Queueing queue limit 64 packets (queue depth/total drops/no-buffer drops) 0/22927245/0 (pkts output/bytes output) 3214611748/1831697074895 shape (average) cir 10000000, bc 40000, be 40000 target shape rate 10000000 Service-policy : ELA_QUEUING_POLICY Class-map: Priority-One (match-any) 652548002 packets, 121711798378 bytes 5 minute offered rate 364000 bps, drop rate 0 bps Match: ip precedence 5 652547995 packets, 121711796301 bytes 5 minute rate 364000 bps Queueing queue limit 64 packets (queue depth/total drops/no-buffer drops) 0/0/0 (pkts output/bytes output) 652547998/121711798085 bandwidth 40% (4000 kbps) Exp-weight-constant: 9 (1/512) Mean queue depth: 0 packets class Transmitted Random drop Tail drop Minimum Maximum Mark pkts/bytes pkts/bytes pkts/bytes thresh thresh prob 0 0/0 0/0 0/0 20 40 1/10 1 0/0 0/0 0/0 22 40 1/10 2 0/0 0/0 0/0 24 40 1/10 3 0/0 0/0 0/0 26 40 1/10 4 0/0 0/0 0/0 28 40 1/10 5 2859563189/528793287896 0/0 0/0 30 40 1/10 6 0/0 0/0 0/0 32 40 1/10 7 0/0 0/0 0/0 34 40 1/10 Class-map: Priority-Two (match-any) 3787671 packets, 767947737 bytes 5 minute offered rate 0 bps, drop rate 0 bps Match: ip precedence 4 6 7 3787671 packets, 767947737 bytes 5 minute rate 0 bps Queueing queue limit 64 packets (queue depth/total drops/no-buffer drops) 0/0/0 (pkts output/bytes output) 3787671/330536833 bandwidth 20% (2000 kbps) Exp-weight-constant: 9 (1/512) Mean queue depth: 0 packets class Transmitted Random drop Tail drop Minimum Maximum Mark pkts/bytes pkts/bytes pkts/bytes thresh thresh prob 0 0/0 0/0 0/0 20 40 1/10 1 0/0 0/0 0/0 22 40 1/10 2 0/0 0/0 0/0 24 40 1/10 3 0/0 0/0 0/0 26 40 1/10 4 6329811/355302154 0/0 0/0 28 40 1/10 5 0/0 0/0 0/0 30 40 1/10 6 13685632/1194240446 0/0 0/0 32 40 1/10 7 1052/1507535 0/0 0/0 34 40 1/10 Class-map: Best-effort (match-any) 2566808274 packets, 1717522303645 bytes 5 minute offered rate 6420000 bps, drop rate 21000 bps Match: ip precedence 0 1 2566808266 packets, 1717522295369 bytes 5 minute rate 6420000 bps Queueing queue limit 64 packets (queue depth/total drops/no-buffer drops) 0/22927245/0 (pkts output/bytes output) 2543881025/1689309763627 bandwidth 20% (2000 kbps) Exp-weight-constant: 9 (1/512) Mean queue depth: 10 packets class Transmitted Random drop Tail drop Minimum Maximum Mark pkts/bytes pkts/bytes pkts/bytes thresh thresh prob 0 11188633262/6901309576156 50899436/66626844913 23141442/29723879892 20 40 1/10 1 42293/20533986 11/9717 1/121 22 40 1/10 2 0/0 0/0 0/0 24 40 1/10 3 0/0 0/0 0/0 26 40 1/10 4 0/0 0/0 0/0 28 40 1/10 5 0/0 0/0 0/0 30 40 1/10 6 0/0 0/0 0/0 32 40 1/10 7 0/0 0/0 0/0 34 40 1/10 Class-map: Priority-Three (match-any) 81557 packets, 5666687 bytes 5 minute offered rate 0 bps Match: ip precedence 2 3 81557 packets, 5666687 bytes 5 minute rate 0 bps Class-map: class-default (match-any) 868971 packets, 91855955 bytes 5 minute offered rate 0 bps, drop rate 0 bps Match: any queue limit 64 packets (queue depth/total drops/no-buffer drops) 0/0/0 (pkts output/bytes output) 14395054/20344976350
HERE IS THE POLICY MAP class-map match-any Best-effort match ip precedence 0 1 class-map match-any Priority-Three match ip precedence 2 3 class-map match-any Priority-Two match ip precedence 4 6 7 class-map match-any Priority-One match ip precedence 5 ! ! policy-map ELA_QUEUING_POLICY class Priority-One bandwidth percent 40 random-detect class Priority-Two bandwidth percent 20 random-detect class Best-effort bandwidth percent 20 random-detect class Priority-Three policy-map ELA_SHAPING_POLICY class class-default shape average 10000000 service-policy ELA_QUEUING_POLICY _______________________________________________ cisco-nsp mailing list [email protected] https://puck.nether.net/mailman/listinfo/cisco-nsp archive at http://puck.nether.net/pipermail/cisco-nsp/
