03-22-2007 07:52 AM - edited 03-03-2019 04:15 PM
Can someone tell me why I am seeing the 72 hour cpu history allways at 100% and the 60min and 1min are normal. the number of packets per secound are around 15KPPS.
This is a 7206 router with a NPE-300.
The NPE-300 specification say that it can handle up to 400KPPs.
Can I put more port adapters or is the router stress out?
Is there any documentation on how to calculate how many packetes per Sec the NPE is forwarding?
JAX-7206b#sho proc cpu hist
3333333333333333333333333333333333333333333333333333333333
9999922222111112222233333111113333322222000002222277777444
100
90
80
70
60
50
40 ***** *****
30 **********************************************************
20 **********************************************************
10 **********************************************************
0....5....1....1....2....2....3....3....4....4....5....5....
0 5 0 5 0 5 0 5 0 5
CPU% per second (last 60 seconds)
3222122139332961233333121212222233332233333633222333333332
7240800922431499112352919491002157449156884535111252234530
100
90 * *
80 * *
70 * ** *
60 * ** *
50 * ** *
40 * # ** * ** **** * * * *
30 # #### #* *###* *###* *####### *###*###
20 ##########################################################
10 ##########################################################
0....5....1....1....2....2....3....3....4....4....5....5....
0 5 0 5 0 5 0 5 0 5
CPU% per minute (last 60 minutes)
* = maximum CPU% # = average CPU%
1
9999989999989999999999999999998998999989999999999998979998899999999909
8799939296279819939899995945340365897030798999989894950199693697898909
100 ***** * ** ** ** ******** * * *** *********** * * * *********
90 ***** ************************ ******* ************ * ****************
80 **********************************************************************
70 **********************************************************************
60 **********************************************************************
50 **********************************************************************
40 **********************************************************************
30 **********************##*****************#####*#*****************#####
20 ##*************###########**************##########*************#######
10 ######################################################################
0....5....1....1....2....2....3....3....4....4....5....5....6....6....7.
0 5 0 5 0 5 0 5 0 5 0 5 0
CPU% per hour (last 72 hours)
* = maximum CPU% # = average CPU%
03-22-2007 10:56 AM
Richard,
That's an actual reflection of how busy the CPU was over the last 72 hours. All it tells you is the utilization is much lower over the last 60 mins than the 72 hours preceding that. Honestly, the utilization levels look alarmingly high. You may want to investigate whether this has been triggered by any malicious traffic or bad hardware. Instead, if it's the normal baseline for this device then you may want to look at upgrading this device.
NPE-300 can handle 300kpps when fast switching and can handle only 18-20kpps when it's process switching. That's consistent with your findings of 15kpps being handled by the NPE and it looks like most of the packets are being process switched.
In an normal environment, you shouldn't be seeing too many packets being process switched as fast/CEF, depending on what's enabled, should handle most of the traffic. Focus on the traffic to see if there's any malicious traffic, like virus/worms, that's causing this behavior.
HTH
Sundar
Discover and save your favorite ideas. Come back to expert answers, step-by-step guides, recent topics, and more.
New here? Get started with these tips. How to use Community New member guide