[c-nsp] CEF drops and High processing on AS5400
Rodney Dunn
rodunn at cisco.com
Wed Mar 1 13:29:01 EST 2006
I've seen the collisions drive it up just like you said.
Good catch and a good place to start.
On Wed, Mar 01, 2006 at 10:02:32AM -0600, Church, Chuck wrote:
> The one that's working well is doing 10/full on the Ethernet. The high
> cpu one is doing 10/half, and has a fairly high rate of collisions. The
> CPU is all because of interrupts, not sure if collisions and
> re-transmits use CPU or not. Straightening that out should be an easy
> first step though.
>
>
> Chuck Church
> Network Engineer
> CCIE #8776, MCNE, MCSE
> Netco Government Services
> Enterprise Network Engineering
> Home Office - 864-335-9473
> Cell - 864-266-3978
> cchurch at netcogov.com
>
> -----Original Message-----
> From: cisco-nsp-bounces at puck.nether.net
> [mailto:cisco-nsp-bounces at puck.nether.net] On Behalf Of Sami Joseph
> Sent: Wednesday, March 01, 2006 8:31 AM
> To: Cisco List 2 (E-mail)
> Subject: [c-nsp] CEF drops and High processing on AS5400
>
> Hi,
>
> I have alot of 5400 Access servers that has increased processing, Can
> anyone
> make anything out of these show outputs
>
> The AS 5400 has a FastEther interface that is connected to the uplink of
> a
> DSLAM on both AS.
>
> If anyone has experience here, i'd send you the configurations.
>
> I have included the following commands on both AS:
>
> sh run int Fast0/0 (uplink to dslam)
> sh adj
> sh cef drop
> sh cef not
> sh int fa0/0
> sh proc cpu sor
> sh proc mem sor
>
> High_CPU-as01#sh run int FastEthernet0/0
> Building configuration...
>
> Current configuration : 134 bytes
> !
> interface FastEthernet0/0
> ip address 172.31.9.25 255.255.255.248
> duplex auto
> speed auto
> no cdp enable
> end
>
>
> High_CPU-as01#sh cef int FastEthernet0/0
> FastEthernet0/0 is up (if_number 3)
> Corresponding hwidb fast_if_number 3
> Corresponding hwidb firstsw->if_number 3
> Internet address is 172.31.9.25/29
> ICMP redirects are always sent
> Per packet load-sharing is disabled
> IP unicast RPF check is disabled
> Inbound access list is not set
> Outbound access list is not set
> IP policy routing is disabled
> BGP based policy accounting is disabled
> Hardware idb is FastEthernet0/0
> Fast switching type 1, interface type 18
> IP CEF switching enabled
> IP CEF Feature Fast switching turbo vector
> Input fast flags 0x0, Output fast flags 0x0
> ifindex 401(401)
> Slot 0 Slot unit 0 Unit 0 VC -1
> Transmit limit accumulator 0x0 (0x0)
> IP MTU 1500
> High_CPU-as01#sh int FastEthernet0/0
> FastEthernet0/0 is up, line protocol is up
> Hardware is Fast Ethernet, address is 0006.5345.4d0e (bia
> 0006.5345.4d0e)
> Internet address is 172.31.9.25/29
> MTU 1500 bytes, BW 10000 Kbit, DLY 1000 usec,
> reliability 255/255, txload 3/255, rxload 13/255
> Encapsulation ARPA, loopback not set
> Keepalive set (10 sec)
> Half-duplex, 10Mb/s, 100BaseTX/FX
> 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: 0/4096/0/382 (size/max/drops/flushes); Total output
> drops: 0
> Queueing strategy: fifo
> Output queue: 0/4096 (size/max)
> 5 minute input rate 517000 bits/sec, 110 packets/sec
> 5 minute output rate 139000 bits/sec, 134 packets/sec
> 106417259 packets input, 1052394063 bytes
> Received 28 broadcasts, 0 runts, 0 giants, 0 throttles
> 0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored
> 0 watchdog
> 0 input packets with dribble condition detected
> 130512782 packets output, 2166582892 bytes, 0 underruns
> 1 output errors, 3742659 collisions, 0 interface resets
> 0 babbles, 0 late collision, 3372613 deferred
> 0 lost carrier, 0 no carrier
> 0 output buffer failures, 0 output buffers swapped out
> High_CPU-as01#
>
>
>
>
> High_CPU-as01#sh proc cpu sorted
> CPU utilization for five seconds: 44%/41%; one minute: 56%; five
> minutes:
> 57%
> PID Runtime(ms) Invoked uSecs 5Sec 1Min 5Min TTY Process
> 37 17551280 149388356 117 1.96% 1.79% 1.84% 0 CCP
> manager
> 63 7162392 16249592 440 0.49% 0.23% 0.23% 0 IP Input
> 120 1013604 126366 8021 0.16% 0.15% 0.16% 0 Compute
> load
> avg
> 4 2367068 166998 14174 0.16% 0.28% 0.30% 0 Check
> heaps
> 20 4416 631812 6 0.08% 0.00% 0.00% 0 GraphIt
> 49 36 165 218 0.08% 0.03% 0.00% 2 Virtual
> Exec
> 166 89820 20074120 4 0.08% 0.02% 0.01% 0 PPP
> Events
> 176 33184 97051 341 0.08% 0.02% 0.00% 0 RADIUS
> 8 8136 73942 110 0.00% 0.00% 0.00% 0 RM
> PROCESS
> 7 51604 20075 2570 0.00% 0.00% 0.00% 0 Serial
> Backgroun
> 6 0 2 0 0.00% 0.00% 0.00% 0 Timers
> 9 16728 56027 298 0.00% 0.00% 0.00% 0 RM
> PROCESS
> 10 3100 56027 55 0.00% 0.00% 0.00% 0 RM
> PROCESS
> 14 0 18 0 0.00% 0.00% 0.00% 0 AAA
> high-capacit
> 5 0 3 0 0.00% 0.00% 0.00% 0 Pool
> Manager
> 3 76 1579 48 0.00% 0.00% 0.00% 1 Exec
> 17 456 16033 28 0.00% 0.00% 0.00% 0 DDR
> Timers
> High_CPU-as01#sh proc mem sor
> Total: 231865696, Used: 53545284, Free: 178320412
> PID TTY Allocated Freed Holding Getbufs Retbufs Process
> 0 0 163808 1848 41046524 0 0 *Init*
> 122 0 18063184 376048 1979792 0 0 EST msg
> processi
> 166 0 622343912 577605428 1616096 0 0 PPP
> Events
> 76 0 2538876 188 1321380 1140784 0 ss7_mtp2
> 140 0 1096312 188 1102960 0 0 VTSP
> 131 0 391559656 457513584 685908 0 0 ISDN
> 0 0 402809996 313578432 660964 12346408 840000 *Dead*
> 142 0 674656 0 561640 0 0 Session
> Applicat
> 160 0 311504 188 336152 0 0
> CCSIP_SPI_CONTRO
> 158 0 303048 188 327696 0 0
> CCH323_CT
> 164 0 280880 0 305716 0 0 RTPSPI
> 71 0 156417488 155158528 291836 0 0 SSS
> Manager
> 52 0 18138336 30428796 214344 0 0 Call
> Progress No
> 66 0 3100972 376 187292 0 0 PPP
> Hooks
> 40 0 6848512 2751704 161656 0 0 Call
> Management
> 46 0 781532 0 155528 0 0 NP
> Download
> Proc
> 107 0 147556 0 154392 0 0
> QOS_MODULE_MAIN
> 176 0 115752 60459204 122400 0 0 RADIUS
> 73 0 24504152 19083772 121468 0 0 PPP IP
> Route
> 23 0 121655192 121567012 112972 0 0 Net
> Background
>
>
>
> High_CPU-as01#sh adj
> Protocol Interface Address
> IP FastEthernet0/1 10.10.10.10(5)
> IP Async3/57 point2point(5)
> IP FastEthernet0/0 xx.xx.110.231(5)
> IP FastEthernet0/0 172.31.10.25(5)
> IP FastEthernet0/0 172.31.9.26(19)
> IP FastEthernet0/0 172.31.10.3(5)
> IP Virtual-Access2 point2point(19)
> IP Async3/12 point2point(5)
> High_CPU-as01#sh cef dro
> CEF Drop Statistics
> Slot Encap_fail Unresolved Unsupported No_route No_adj
> ChkSum_Err
> RP 3845 0 8670 0 0
> 8
> High_CPU-as01#sh cef no
> High_CPU-as01#sh cef not-cef-switched
> CEF Packets passed on to next switching layer
> Slot No_adj No_encap Unsupp'ted Redirect Receive Options Access
> Frag
> RP 455 0 95059845 0 678091 0 0
> 0
> High_CPU-as01#
>
>
>
> Normal_CPU_01#sh proc cpu sor
> CPU utilization for five seconds: 5%/1%; one minute: 4%; five minutes:
> 4%
> PID Runtime(ms) Invoked uSecs 5Sec 1Min 5Min TTY Process
> 58 63278040 130450725 485 3.51% 2.49% 2.47% 0 IP Input
> 37 12632748 144197495 87 0.15% 0.24% 0.24% 0 CCP
> manager
> 118 1052416 405109 2597 0.07% 0.04% 0.05% 0 Compute
> load
> avg
> 2 168 405108 0 0.00% 0.00% 0.00% 0 Load
> Meter
> 3 4 836 4 0.00% 0.00% 0.00% 0 VTEMPLATE
> Backgr
> 4 0 1 0 0.00% 0.00% 0.00% 0
> EDDRI_MAIN
> 7 0 2 0 0.00% 0.00% 0.00% 0 Timers
> 5 5630212 443293 12700 0.00% 0.25% 0.24% 0 Check
> heaps
>
>
> Normal_CPU_01#sh proc mem sort
> Total: 93973088, Used: 38613916, Free: 55359172
> PID TTY Allocated Freed Holding Getbufs Retbufs Process
> 0 0 292896 92024 29147248 0 0 *Init*
> 69 0 2561884 188 1344360 1140784 0 ss7_mtp2
> 94 0 1054864 188 1054676 0 0 SCTP
> Main
> Proces
> 168 0 888752 65812 796980 0 0 EST msg
> processi
> 134 0 746448 0 633336 0 0 Session
> Applicat
> 6 0 3930988 1961068 471344 1376452 1230240 Pool
> Manager
> 156 0 352836 0 377688 0 0 RTPSPI
> 165 0 398676936 371681144 359476 0 0 PPP
> Events
> 152 0 332496 188 357160 0 0
> CCSIP_SPI_CONTRO
> 150 0 325232 188 349896 0 0
> CCH323_CT
> 58 0 2292755928 48797100 289608 0 0 IP Input
> 64 0 79972116 79479860 276896 0 0 SSS
> Manager
> 0 0 2355452568 2254449804 187812 11593000 840000 *Dead*
> 61 0 2035152 376 187308 0 0 PPP
> Hooks
> 106 0 152600 0 159452 0 0
> QOS_MODULE_MAIN
> 132 0 134364 188 141028 0 0 VTSP
>
> Normal_CPU_01#sh cef drop
> CEF Drop Statistics
> Slot Encap_fail Unresolved Unsupported No_route No_adj
> ChkSum_Err
> RP 678 0 1108 6644639 0
> 2
> Normal_CPU_01#sh adj
> Protocol Interface Address
> IP FastEthernet0/0 172.31.19.38(19)
> Normal_CPU_01#sh cef n
> Normal_CPU_01#sh cef not-cef-switched
> CEF Packets passed on to next switching layer
> Slot No_adj No_encap Unsupp'ted Redirect Receive Options Access
> Frag
> RP 210 0 58993402 31 3001715 0 0
> 0
> Normal_CPU_01#
>
>
>
>
>
>
> Normal_CPU_01#sh ver
> Cisco Internetwork Operating System Software
> IOS (tm) 5350 Software (C5350-IS-M), Version 12.3(17a), RELEASE SOFTWARE
> (fc2)
> Technical Support: http://www.cisco.com/techsupport
> Copyright (c) 1986-2005 by cisco Systems, Inc.
> Compiled Mon 12-Dec-05 16:14 by evmiller
> Image text-base: 0x60008AFC, data-base: 0x61700000
>
> Normal_CPU_01# sh run int FastEthernet0/0
> Building configuration...
>
> Current configuration : 160 bytes
> !
> interface FastEthernet0/0
> description ****Link to DSLAM********
> ip address 172.31.19.37 255.255.255.252
> duplex full
> speed 10
> no cdp enable
> end
>
>
> Normal_CPU_01#sh cef int FastEthernet0/0
> FastEthernet0/0 is up (if_number 3)
> Corresponding hwidb fast_if_number 3
> Corresponding hwidb firstsw->if_number 3
> Internet address is 172.31.19.37/30
> ICMP redirects are always sent
> Per packet load-sharing is disabled
> IP unicast RPF check is disabled
> Inbound access list is not set
> Outbound access list is not set
> IP policy routing is disabled
> BGP based policy accounting is disabled
> Hardware idb is FastEthernet0/0
> Fast switching type 1, interface type 18
> IP CEF switching enabled
> IP CEF Feature Fast switching turbo vector
> Input fast flags 0x0, Output fast flags 0x0
> ifindex 228(228)
> Slot 0 Slot unit 0 Unit 0 VC -1
> Transmit limit accumulator 0x0 (0x0)
> IP MTU 1500
> Normal_CPU_01#sh int FastEthernet0/0
> FastEthernet0/0 is up, line protocol is up
> Hardware is Fast Ethernet, address is 000b.5fda.09f2 (bia
> 000b.5fda.09f2)
> Description: ****Link to ABBASEYA DSLAM********
> Internet address is 172.31.19.37/30
> MTU 1500 bytes, BW 10000 Kbit, DLY 1000 usec,
> reliability 255/255, txload 1/255, rxload 4/255
> Encapsulation ARPA, loopback not set
> Keepalive set (10 sec)
> Full-duplex, 10Mb/s, 100BaseTX/FX
> 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: 0/4096/0/24 (size/max/drops/flushes); Total output drops:
> 0
> Queueing strategy: fifo
> Output queue: 0/4096 (size/max)
> 5 minute input rate 185000 bits/sec, 47 packets/sec
> 5 minute output rate 34000 bits/sec, 41 packets/sec
> 78546035 packets input, 290784531 bytes
> Received 2 broadcasts, 0 runts, 0 giants, 0 throttles
> 508432 input errors, 508432 CRC, 247587 frame, 0 overrun, 0 ignored
> 0 watchdog
> 0 input packets with dribble condition detected
> 109674177 packets output, 2801240207 bytes, 0 underruns
> 0 output errors, 0 collisions, 2 interface resets
> 0 babbles, 0 late collision, 0 deferred
> 0 lost carrier, 0 no carrier
> 0 output buffer failures, 0 output buffers swapped out
> Normal_CPU_01#
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