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tasha
New Contributor

Adtran 3448 with 98% to 100% CPU Utilization

I have a 3448 that is running a high cpu utilization:

System load: 1sec:99.40%  1min:100.00%  5min:99.26%  Min: 0.00%  Max: 100.00%

Context switch load: 0.68%

                                      Invoked  Exec Time    Runtime    Load %%

Task Id    Task Name        PRI STA   (count)     (usec)     (usec)     (1sec)

1          Idle               0 W   147427119        486          0       0.00

3          PC Config          7 S    63001176        520      74241       7.42

4          PacketRouting     44 W   2755530024         10     441509      44.15

5          Timer             46 W   1175549823         13      16243       1.62

6          Thread Pool        4 R      756721        143       1321       0.13

7          Timer-00          10 W   185727222          2        468       0.05

8          Nm01               5 W           0     535588          0       0.00

9          Clock              9 W     2754307         18          0       0.00

10         FrontPanel        43 W    24652721        115       2236       0.22

11         con0              46 W      253366         11          0       0.00

12         Flash Maintena~    4 W      123721        426          0       0.00

13         CF Manager         9 W     1536594          5          5       0.00

14         ICP Session        8 W      114217         10          0       0.00

15         RSTP              43 W    12030582        107       1057       0.11

16         RSTP-BG           42 W          28        532          0       0.00

17         MLD Thread         6 W           4          8          0       0.00

18         RouteTableTick     6 W     1135063         90         90       0.01

19         RouteTableTick     6 W     1103853         10         10       0.00

20         IGMPTick           6 W      794737         40         40       0.00

21         IGMP-Receiver      6 W           0    4059757          0       0.00

22         IP Events         27 W     1491115         34         72       0.01

23         tcptimer          25 W      272549          7         97       0.01

24         tcpinp            25 W      721696        111        783       0.08

25         tcpout            25 W     1131114         63        873       0.09

26         DnsClient         19 W      855535         30          0       0.00

27         DnsProxy          19 W   2216031396         80     251189      25.12

28         DnsTable          19 W      223970         28          0       0.00

29         Port Manager       9 W     7715017         47        244       0.02

30         eth01             46 W   1582827099          4      73447       7.34

31         eth02             46 W    19781916         69       7759       0.78

32         SnmpThread         6 W    11339105          9         30       0.00

33         WWW               22 W     1454963         57          0       0.00

34         SEC               46 W      116244         25          0       0.00

35         IKE                6 W       68769          9          0       0.00

36         IPSecKeyGen        4 W           0     324320          0       0.00

37         SCEP               6 W           0     322274          0       0.00

38         MediaConnectio~   39 W     2437229          2        920       0.09

39         FTPServer List~    5 W           1         37          0       0.00

40         SMTP Client       19 W           0         72          0       0.00

41         SNTP Client       22 W          13         22          0       0.00

42         Switch Managem~   43 W           0         75          0       0.00

43         Switch Mainten~    4 R    11026501          5      49350       4.94

44         Stacking           9 W      973859         52          0       0.00

45         FCC2              46 W    11990717          8         35       0.00

46         CLIInjectQ         6 W           0      59395          0       0.00

49         RipOut             6 W      758577          7          7       0.00

50         RipIn              6 W          51         41          0       0.00

51         poe0              46 W     7658708         12         54       0.01

52         PwrOvrEth          9 W    28021881          4        199       0.02

53         UDP Relay         22 W           1        105          0       0.00

54         DHCP Server       34 W         838         38          0       0.00

55         CFM Maint         44 W     1122159         37         37       0.00

56         AUTOLINKQ          4 W      427584        323          0       0.00

57         HttpClientQ        6 W        2695         84          0       0.00

58         SIP_Stack         38 W      341702         74        128       0.01

59         ntpd              22 W     2385208         86         86       0.01

60         RvSipProc0        39 W      123158        117          0       0.00

62         DHCPv6            34 W           0        433          0       0.00

63         PacketCapture      4 R     1183956         27         53       0.01

64         Flow Meter Log~   20 W     1496705         38         38       0.00

65         OSPF               6 W           0     154730          0       0.00

66         OSPFv3             6 W           0      45481          0       0.00

67         TWAMP-Control      6 W           0      28707          0       0.00

68         TWAMP-Test        19 W           1         13          0       0.00

69         UDP In            42 W   718556243         75      71356       7.14

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1 Reply
jayh
Honored Contributor
Honored Contributor

Re: Adtran 3448 with 98% to 100% CPU Utilization

Your top CPU hogs are packet routing, DNS proxy and UDP in. Look for a host on the inside acting as part of a botnet involved in a DDoS attack, or configured as a resolver and open to the public.

"show ip policy-sessions" will possibly give a clue. Look for dozens or hundreds of UDP connections that aren't serving a business purpose.