[f-nsp] BigIron 15000 CPU Spikes

[FAHAD ALI KHAN]

Guys

We have recently facing issue of CPU spikes in BigIron 15000. These
spikes arrive 3 to 4 time in a day but this spikes didnt have any specific
pattern. During this spikes no abnormality was faced and traffic rate was
also found normal, no interface or neighborship flaps. we are running
Static, OSPF, BGP w/o complete internet feed, switch trunk.Complete specs of
BigIron is BigIron 15000 with J-BxGMR4 JetCore Management Module
(active/standby config) and flash code of B2R07802.

Following are the some statistics in busy times,

*sh cpu*
79 percent busy, from 700551 sec ago
It's been more than 50 hours since last call, the CPU utilization
data collected may have wrapped around and result in high
utilization
1   sec avg: 10 percent busy
5   sec avg:  8 percent busy
60  sec avg:  9 percent busy
300 sec avg: 10 percent busy

*sh ip route
*Total number of *IP routes: 3412*, *avail: 136489* (out of max 140000)

*sh memory*
Total DRAM: 536813568 bytes
  Dynamic memory: 511647740 bytes total, 361944208 bytes free, 29% used
      BGP memory: 788800 bytes (<1%) used from dynamic memory
     OSPF memory: 1828228 bytes (<1%) used from dynamic memory

*sh proc cpu*
Process Name   5Sec(%)   1Min(%)   5Min(%)   15Min(%)   Runtime(ms)
ACL                    1.36         1.76        1.57           1.38
26786013
ARP                    0.81         0.69        0.62          0.57
14575772
AT                       0.00         0.00        0.00          0.00
0
BGP                    0.01         0.01        0.01          0.01
394056
DOT1X                 0.00         0.00        0.00          0.00
0
GVRP                  0.00         0.00        0.00          0.00
0
ICMP                   0.11         0.13         0.11         0.12
3084780
IP                        5.19         5.89         5.19         4.74
91133089
IP_M                   0.00         0.00         0.00          0.00
243013
IPUP                   0.05         0.06         0.06          0.06
1690370
IPX                      0.00         0.00         0.00          0.00
0
L2VLAN               0.11         0.14         0.13          0.14
3500599
NAT                     0.00         0.00         0.00          0.00
0
OSPF                  1.82         2.93         1.61          1.43
32622091
RIP                      0.00         0.00         0.00          0.00
2604
STP                     0.00         0.00         0.00          0.00
110790
VRRP                  0.00         0.00         0.00          0.00
0

Is there any one ever faced this issue with BigIron 15000?

Regards

Fahad
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