
rodunn at cisco
Sep 23, 2008, 1:47 PM
Post #10 of 11
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Hank, Every time I've ever worked on this it's microburst. The only real way to fix it is a hardware forwarding box that can do packets at line rate gige. Rodney On Sun, Sep 14, 2008 at 09:38:26AM +0300, Hank Nussbacher wrote: > At 02:43 PM 12-09-08 -0400, Rodney Dunn wrote: > > Rodney, > > On a related note, we are seeing input overruns on almost all native GigaE > ports on the NPE-G1. Example on 12.4(21): > > GigabitEthernet0/2 is up, line protocol is up > Hardware is BCM1250 Internal MAC, address is 0009.446d.ac1a (bia > 0009.446d.ac1a) > MTU 1500 bytes, BW 1000000 Kbit, DLY 10 usec, > reliability 255/255, txload 23/255, rxload 13/255 > Encapsulation 802.1Q Virtual LAN, Vlan ID 1., loopback not set > Keepalive set (10 sec) > Full-duplex, 1000Mb/s, link type is force-up, media type is SX > output flow-control is unsupported, input flow-control is XON > 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: 0/75/0/0 (size/max/drops/flushes); Total output drops: 0 > Queueing strategy: fifo > Output queue: 0/40 (size/max) > 30 second input rate 52874000 bits/sec, 13178 packets/sec > 30 second output rate 92696000 bits/sec, 14626 packets/sec > 13055246077 packets input, 7473426491146 bytes, 0 no buffer > Received 48343 broadcasts, 0 runts, 0 giants, 0 throttles > 315 input errors, 0 CRC, 0 frame, 315 overrun, 0 ignored > 0 watchdog, 2937496 multicast, 0 pause input > 0 input packets with dribble condition detected > > On 12.4(18): > GigabitEthernet0/1 is up, line protocol is up > Hardware is BCM1250 Internal MAC, address is 0009.449b.2c1b (bia > 0009.449b.2c1b) > MTU 9000 bytes, BW 1000000 Kbit, DLY 10 usec, > reliability 255/255, txload 29/255, rxload 41/255 > Encapsulation ARPA, loopback not set > Keepalive set (10 sec) > Full-duplex, 1000Mb/s, media type is RJ45 > output flow-control is XON, input flow-control is XON > ARP type: ARPA, ARP Timeout 00:04:00 > Last input 00:00:01, output 00:00:00, output hang never > Last clearing of "show interface" counters never > Input queue: 0/2048/0/3 (size/max/drops/flushes); Total output drops: > 139963 > Queueing strategy: fifo > Output queue: 0/1024 (size/max) > 30 second input rate 163604000 bits/sec, 25284 packets/sec > 30 second output rate 113775000 bits/sec, 23142 packets/sec > 138829558726 packets input, 110625630435301 bytes, 0 no buffer > Received 1170089 broadcasts, 0 runts, 0 giants, 0 throttles > 42963 input errors, 0 CRC, 0 frame, 42963 overrun, 0 ignored > 0 watchdog, 2939379 multicast, 0 pause input > 0 input packets with dribble condition detected > > On 12.4(9)T2: > GigabitEthernet0/2 is up, line protocol is up > Hardware is BCM1250 Internal MAC, address is 0009.449b.441a (bia > 0009.449b.441a) > MTU 1500 bytes, BW 450000 Kbit, DLY 10 usec, > reliability 255/255, txload 21/255, rxload 60/255 > Encapsulation ARPA, loopback not set > Keepalive set (10 sec) > Full-duplex, 1000Mb/s, media type is RJ45 > output flow-control is XON, input flow-control is XON > 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: 0/1024/369/79002147 (size/max/drops/flushes); Total output > drops: 82 > Queueing strategy: fifo > Output queue: 0/1024 (size/max) > 30 second input rate 105976000 bits/sec, 13665 packets/sec > 30 second output rate 38207000 bits/sec, 11394 packets/sec > 2996785111 packets input, 3073612701 bytes, 2279 no buffer > Received 500907287 broadcasts, 0 runts, 0 giants, 2483 throttles > 8348 input errors, 0 CRC, 0 frame, 8348 overrun, 0 ignored > 0 watchdog, 497602409 multicast, 0 pause input > 0 input packets with dribble condition detected > > Any ideas why? > > -Hank > > >On Fri, Sep 12, 2008 at 02:40:04PM -0400, Clayton Zekelman wrote: > >> > >> No luck... didn't fix it. Is it fixed in a subsequent release? Are > >> there any other parameters I can tune? > > > >Not really because you can't tune the rx ring depth. > > > >Check 'sh controller'. > > > >What does 'sh proc cpu sort | excl 0.00' say? > > > >Can you post the configuration..I'm curious what your features > >look like because the more you have the less pps you get through > >this box..it's all done in software and can't do all features at line > >rate during a microburst. > > > >sh int stat > > > > > >Rodney > > > > > >> > >> GigabitEthernet0/1 is up, line protocol is up > >> Hardware is MV64460 Internal MAC, address is 001a.6d30.091b (bia > >> 001a.6d30.091b) > >> Description: to gig-fastiron Ethernet11 > >> MTU 1500 bytes, BW 1000000 Kbit, DLY 10 usec, > >> reliability 255/255, txload 23/255, rxload 48/255 > >> Encapsulation 802.1Q Virtual LAN, Vlan ID 1., loopback not set > >> Keepalive set (10 sec) > >> Full-duplex, 1000Mb/s, media type is RJ45 > >> output flow-control is XON, input flow-control is XON > >> 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 00:10:09 > >> Input queue: 0/4096/533/0 (size/max/drops/flushes); Total output > >drops: 0 > >> Queueing strategy: fifo > >> Output queue: 0/40 (size/max) > >> 30 second input rate 189692000 bits/sec, 30246 packets/sec > >> 30 second output rate 91448000 bits/sec, 27197 packets/sec > >> 18432915 packets input, 1555851456 bytes, 0 no buffer > >> Received 65 broadcasts, 0 runts, 0 giants, 0 throttles > >> 1117 input errors, 0 CRC, 0 frame, 0 overrun, 1117 ignored > >> 0 watchdog, 1034 multicast, 0 pause input > >> 0 input packets with dribble condition detected > >> > >> > >> > >> At 02:16 PM 9/12/2008, Rodney Dunn wrote: > >> >Can you bump up your input queue depth: > >> > > >> >hold-queue 4096 in > >> > > >> >and see if they stop. > >> > > >> >I don't suspect that is going to help because the ignores > >> >are not increasing that would point to: > >> > > >> >CSCse05447 > >> >Externally found moderate defect: Resolved (R) > >> >7200 ethernet interfaces should not throttle on input queue full drops > >> > > >> >Most likely you are seeing micro burst that are coming in faster > >> >than the CPU can drain the rx ring. > >> > > >> >Rodney > >> > > >> > > >> > > >> >On Fri, Sep 12, 2008 at 12:50:29PM -0400, Clayton Zekelman wrote: > >> >> > >> >> I'm running a Cisco 7206/VXR with an NPE G2, Version 12.4(4)XD4 > >> >> acting as an LNS. > >> >> > >> >> I'm getting input errors consistently incrementing on the Gig > >> >> interface (ignored errors) > >> >> > >> >> Any way to fix this? I saw some discussion a while back about this, > >> >> and it seemed to have to do with buffers - but I can't find any > >> >> definitive recommendations on what the settings should be. > >> >> > >> >> > >> >> > >> >> GigabitEthernet0/1 is up, line protocol is up > >> >> Hardware is MV64460 Internal MAC, address is 001a.6d30.091b (bia > >> >> 001a.6d30.091b) > >> >> Description: to gig-fastiron Ethernet11 > >> >> MTU 1500 bytes, BW 1000000 Kbit, DLY 10 usec, > >> >> reliability 255/255, txload 22/255, rxload 46/255 > >> >> Encapsulation 802.1Q Virtual LAN, Vlan ID 1., loopback not set > >> >> Keepalive set (10 sec) > >> >> Full-duplex, 1000Mb/s, media type is RJ45 > >> >> output flow-control is XON, input flow-control is XON > >> >> 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 00:22:17 > >> >> Input queue: 0/75/1191/0 (size/max/drops/flushes); Total output > >drops: > >> >0 > >> >> Queueing strategy: fifo > >> >> Output queue: 0/40 (size/max) > >> >> 30 second input rate 181384000 bits/sec, 29001 packets/sec > >> >> 30 second output rate 86319000 bits/sec, 26045 packets/sec > >> >> 38605963 packets input, 4274358612 bytes, 1 no buffer > >> >> Received 230 broadcasts, 0 runts, 0 giants, 0 throttles > >> >> 2677 input errors, 0 CRC, 0 frame, 0 overrun, 2677 ignored > >> >> 0 watchdog, 2196 multicast, 0 pause input > >> >> 0 input packets with dribble condition detected > >> >> 34556615 packets output, 1656923135 bytes, 0 underruns > >> >> 0 output errors, 0 collisions, 0 interface resets > >> >> 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 > >> >> > >> >> > >> >> > >> >> --- > >> >> Clayton Zekelman > >> >> Managed Network Systems Inc. (MNSi) > >> >> 344-300 Tecumseh Rd. E. > >> >> Windsor, Ontario > >> >> N8X 5E8 > >> >> > >> >> tel. 519-985-8410 > >> >> fax. 519-985-8409 > >> >> > >> >> _______________________________________________ > >> >> cisco-nsp mailing list cisco-nsp [at] puck > >> >> https://puck.nether.net/mailman/listinfo/cisco-nsp > >> >> archive at http://puck.nether.net/pipermail/cisco-nsp/ > >> > >> --- > >> Clayton Zekelman > >> Managed Network Systems Inc. (MNSi) > >> 344-300 Tecumseh Rd. E. > >> Windsor, Ontario > >> N8X 5E8 > >> > >> tel. 519-985-8410 > >> fax. 519-985-8409 > >_______________________________________________ > >cisco-nsp mailing list cisco-nsp [at] puck > >https://puck.nether.net/mailman/listinfo/cisco-nsp > >archive at http://puck.nether.net/pipermail/cisco-nsp/ _______________________________________________ cisco-nsp mailing list cisco-nsp [at] puck https://puck.nether.net/mailman/listinfo/cisco-nsp archive at http://puck.nether.net/pipermail/cisco-nsp/
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