[c-nsp] CEF drops and High processing on AS5400

Church, Chuck cchurch at netcogov.com
Wed Mar 1 11:02:32 EST 2006


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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