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Высокая загрузка cisco 7206

Доброе время суток.

Есть cisco 7206, на ней поднят PPPoE, обрабатывает примерно 140Мб(в час пик чуть более 1000 абонентов) трафика.

При этом наблюдается довольно высокая загрузка CPU:

 

CPU utilization for five seconds: 47%/41%; one minute: 45%; five minutes: 46%

PID Runtime(ms) Invoked uSecs 5Sec 1Min 5Min TTY Process

44 27957584 1637899 17069 2.39% 1.29% 1.27% 0 Per-Second Jobs

267 1179532 51393612 22 0.87% 0.87% 0.86% 0 PPP Events

5 2249036 208526 10785 0.87% 0.14% 0.09% 0 Check heaps

87 10696704 53866996 198 0.39% 0.47% 0.61% 0 IP Input

19 5084240 94833484 53 0.31% 0.26% 0.25% 0 ARP Input

264 1235016 4160186 296 0.23% 0.16% 0.16% 0 PPPoE Discovery

97 780720 1426639 547 0.15% 0.10% 0.08% 0 SSS Manager

142 29432 381901590 0 0.15% 0.20% 0.21% 0 HQF Shaper Backg

112 172660 2438754 70 0.15% 0.15% 0.15% 0 CEF: IPv4 proces

6 55960 191513 292 0.07% 0.00% 0.00% 0 Pool Manager

257 1140108 6339086 179 0.07% 0.09% 0.08% 0 RADIUS

110 89924 253806 354 0.07% 0.00% 0.00% 0 IP RIB Update

109 72284 711808 101 0.07% 0.00% 0.00% 0 IP Background

40 104980 917502 114 0.07% 0.03% 0.02% 0 Net Background

266 23496 48266110 0 0.07% 0.07% 0.07% 0 PPP manager

16 27152 28050742 0 0.00% 0.01% 0.00% 0 EnvMon

 

Плюс к этому наблюдается большое количество ошибок на интерфейсе:

 

GigabitEthernet0/1 is up, line protocol is up

Hardware is MV64460 Internal MAC, address is 000d.bcfd.771b (bia 000d.bcfd.771b)

Description: MANAGMENT

Internet address is 192.168.16.2/24

MTU 1500 bytes, BW 100000 Kbit/sec, DLY 100 usec,

reliability 255/255, txload 6/255, rxload 105/255

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 unsupported

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: 3/75/1315303/16 (size/max/drops/flushes); Total output drops: 35

Queueing strategy: fifo

Output queue: 0/40 (size/max)

5 minute input rate 41444000 bits/sec, 16683 packets/sec

5 minute output rate 104395000 bits/sec, 16115 packets/sec

4039847522 packets input, 1488246833 bytes, 41 no buffer

Received 202067301 broadcasts, 0 runts, 0 giants, 0 throttles

530179 input errors, 0 CRC, 0 frame, 0 overrun, 530179 ignored

0 watchdog, 46836686 multicast, 0 pause input

0 input packets with dribble condition detected

4030099125 packets output, 434300790 bytes, 0 underruns

8 output errors, 0 collisions, 2 interface resets

2355702 unknown protocol drops

0 babbles, 0 late collision, 0 deferred

8 lost carrier, 0 no carrier, 0 pause output

0 output buffer failures, 0 output buffers swapped out

 

GigabitEthernet0/1.5 is up, line protocol is up

Hardware is MV64460 Internal MAC, address is 000d.bcfd.771b (bia 000d.bcfd.771b)

Description: WAN Vlan5

Internet address is ХХ.ХХ.ХХ.2/23

MTU 1500 bytes, BW 1000000 Kbit/sec, DLY 100 usec,

reliability 255/255, txload 6/255, rxload 105/255

Encapsulation 802.1Q Virtual LAN, Vlan ID 5.

ARP type: ARPA, ARP Timeout 04:00:00

Last clearing of "show interface" counters never

 

GigabitEthernet0/1.24 is up, line protocol is up

Hardware is MV64460 Internal MAC, address is 000d.bcfd.771b (bia 000d.bcfd.771b)

Description: LAN PPPoE Clients

Internet address is 192.168.24.1/24

MTU 1500 bytes, BW 1000000 Kbit/sec, DLY 100 usec,

reliability 255/255, txload 6/255, rxload 105/255

Encapsulation 802.1Q Virtual LAN, Vlan ID 24.

ARP type: ARPA, ARP Timeout 04:00:00

Last clearing of "show interface" counters never

 

В чем может быть причина такой загрузки и большого количества ошибок?

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ignored - это не ошибки, это отброшенные пакеты. Вилан не тот, пакет какой-нибудь IPX/IPv6. Короче всё, что не попало в обработку - ignored.

А загрузка для NPE-G1 нормальная, он 300 мегабит с трудом проедает в качестве БРАСа.

Вот бордером - другое дело...

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NPE-G2 тоже не слишком крут, 300 мегабит и для него неплохо.

Кстати, на новых IOS'ах (как раз 12.4Т) NPE-G1 слабее NPE-G2 чуть не в два раза...

TurboACL включены? Они неплохо могут уменьшить загрузку.

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Есть только обычные ACL....

А можно ли перевести имеющиеся ACL в "турбо" режим?

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show interface switching можно?

 

 

а почему такой разброс txload 6/255, rxload 105/255 ?

 

ну судя по последнему как раз мегабит 400 ;) а не 140. Проверьте может быть кто-то флудит.

 

 

 

 

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sh int switching

GigabitEthernet0/1 MANAGMENT

Throttle count 0

Drops RP 1371341 SP 0

SPD Flushes Fast 16 SSE 0

SPD Aggress Fast 0

SPD Priority Inputs 167622509 Drops 1370394

 

Protocol IP

Switching path Pkts In Chars In Pkts Out Chars Out

Process 4001345 414840273 4423880 2520373297

Cache misses 0 - - -

Fast 52082737 3291768004 105058688 707183325

Auton/SSE 0 0 0 0

 

Protocol ARP

Switching path Pkts In Chars In Pkts Out Chars Out

Process 159487961 979102470 734700 46325820

Cache misses 0 - - -

Fast 0 0 0 0

Auton/SSE 0 0 0 0

 

Protocol CDP

Switching path Pkts In Chars In Pkts Out Chars Out

Process 27335 11890341 27353 10202708

Cache misses 0 - - -

Fast 0 0 0 0

Auton/SSE 0 0 0 0

 

Protocol PPPoE

Switching path Pkts In Chars In Pkts Out Chars Out

Process 41639161 4135582662 163263480 1745385687

Cache misses 0 - - -

Fast 458255498 212266502 406646787 1130019021

Auton/SSE 0 0 0 0

 

Protocol Other

Switching path Pkts In Chars In Pkts Out Chars Out

Process 2485159 175226374 1005745 63854658

Cache misses 0 - - -

Fast 0 0 0 0

Auton/SSE 0 0 0 0

 

NOTE: all counts are cumulative and reset only after a reload.

 

Interface FastEthernet0/2 is disabled

 

GigabitEthernet0/2 OUTSIDE

Throttle count 0

Drops RP 0 SP 0

SPD Flushes Fast 0 SSE 0

SPD Aggress Fast 0

SPD Priority Inputs 729464 Drops 0

 

Protocol IP

Switching path Pkts In Chars In Pkts Out Chars Out

Process 34783748 571663775 4017342 291729086

Cache misses 0 - - -

Fast 1815621740 2648370427 2174777350 1233012041

Auton/SSE 0 0 0 0

 

Protocol ARP

Switching path Pkts In Chars In Pkts Out Chars Out

Process 13748 824880 125935 7556100

Cache misses 0 - - -

Fast 0 0 0 0

Auton/SSE 0 0 0 0

 

Protocol CDP

Switching path Pkts In Chars In Pkts Out Chars Out

Process 27342 11893770 27347 10200431

Cache misses 0 - - -

Fast 0 0 0 0

Auton/SSE 0 0 0 0

 

Protocol Other

Switching path Pkts In Chars In Pkts Out Chars Out

Process 0 0 164035 9842100

Cache misses 0 - - -

Fast 0 0 0 0

Auton/SSE 0 0 0 0

 

NOTE: all counts are cumulative and reset only after a reload.

 

Interface GigabitEthernet0/3 is disabled

 

Loopback0 Source LoopBack

 

All statistics for this interface are zero.

NVI0

 

All statistics for this interface are zero.

Virtual-Access1

 

All statistics for this interface are zero.

Virtual-Access2

Throttle count 0

Drops RP 0 SP 0

SPD Flushes Fast 0 SSE 0

SPD Aggress Fast 0

SPD Priority Inputs 26493457 Drops 0

 

Protocol IP

Switching path Pkts In Chars In Pkts Out Chars Out

Process 39199782 3073989203 62165378 3829812575

Cache misses 0 - - -

Fast 353068099 514203385 406513130 4039823503

Auton/SSE 0 0 0 0

 

Protocol PPPoE

Switching path Pkts In Chars In Pkts Out Chars Out

Process 0 0 8519 187326

Cache misses 0 - - -

Fast 0 0 133685 1503590

Auton/SSE 0 0 0 0

 

Protocol Other

Switching path Pkts In Chars In Pkts Out Chars Out

Process 1004 115810 99803568 1395976849

Cache misses 0 - - -

Fast 0 0 0 0

Auton/SSE 0 0 0 0

 

NOTE: all counts are cumulative and reset only after a reload.

Virtual-Template1

 

All statistics for this interface are zero.

Virtual-Template2 PPTP

 

All statistics for this interface are zero.

 

По какому принципу считается что rxload105/255 это 400Мб?

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По какому принципу считается что rxload105/255 это 400Мб?
по принципу 255~скорость интерфейса. 1000/255*104=~407

 

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спасибо за инфу...

перенес управление на другой интерфейс, нагрузка немного упала...

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