×

Warning message

  • Cisco Support Forums is in Read Only mode while the site is being migrated.
  • Cisco Support Forums is in Read Only mode while the site is being migrated.

BGP Router high process

Unanswered Question
Jun 29th, 2014
User Badges:

What do we need to do if BGP Router contribute high process in CPU?

 

CPU utilization for five seconds: 97%/43%; one minute: 99%; five minutes: 92%
 PID Runtime(ms)   Invoked      uSecs   5Sec   1Min   5Min TTY Process 
  44    36270732  35464661       1022 25.03% 15.21% 14.43%   0 BGP Router       
 325   7703860203228294256          0 10.47%  5.58%  5.24%   0 IP Input         
 455     7596596  28244228        268  5.59%  1.60%  0.82%   0 BGP I/O          
 543    13576608   8569950       1584  3.83% 18.94%  9.57%   0 BGP Task         
   9   152474380  15201602      10030  2.07%  0.27%  0.57%   0 Check heaps      
 376    16372652   7777145       2105  1.83% 13.93% 13.76%   0 IP RIB Update    
 358    56785192  14452691       3929  0.95%  0.44%  0.52%   0 CEF: IPv4 proces 
  23    55656604 116191071        479  0.71%  0.51%  0.50%   0 ARP Input        
 348     5736736   7812055        734  0.63%  4.19%  5.03%   0 XDR mcast        
 546    36531108 132425650        275  0.63%  0.37%  0.28%   0 Port manager per 
  35    56337684 306101724        184  0.23%  0.42%  0.30%   0 IPC Seat Manager 
 330   287962916 871459868        330  0.23%  0.39%  1.61%   0 SNMP ENGINE      
 286      7682841067821917          0  0.15%  0.07%  0.07%   0 Ethernet Msec Ti 
 626      354112    825565        428  0.15%  0.11%  0.09%   0 IPv6 Input       
   3      754316 523105917          1  0.15%  0.10%  0.09%   0 HSRP Common      
 385     2182508  14151135        154  0.15%  0.10%  0.14%   0 L3 Manager       
 317    44655884 658073408         67  0.07%  0.04%  0.21%   0 PDU DISPATCHER   
 395     4363480   4661440        936  0.07%  0.04%  0.05%   0 HIDDEN VLAN Proc 
 323     1161648 134374319          8  0.07%  0.04%  0.05%   0 VRRS Main thread 
  56     2269676   9230664        245  0.07%  0.08%  0.07%   0 Per-Second Jobs  
 240     1449416   1870109        775  0.07%  0.04%  0.05%   0 Compute load avg 
 243   1488814081309230003        113  0.07%  0.13%  0.76%   0 IP SNMP          
CPU utilization for five seconds: 97%/43%; one minute: 99%; five minutes: 92%
 PID Runtime(ms)   Invoked      uSecs   5Sec   1Min   5Min TTY Process 
  44    36270732  35464661       1022 25.03% 15.21% 14.43%   0 BGP Router       
 325   7703860203228294256          0 10.47%  5.58%  5.24%   0 IP Input         
 455     7596596  28244228        268  5.59%  1.60%  0.82%   0 BGP I/O          
 543    13576608   8569950       1584  3.83% 18.94%  9.57%   0 BGP Task         
   9   152474380  15201602      10030  2.07%  0.27%  0.57%   0 Check heaps      
 376    16372652   7777145       2105  1.83% 13.93% 13.76%   0 IP RIB Update    
 358    56785192  14452691       3929  0.95%  0.44%  0.52%   0 CEF: IPv4 proces 
  23    55656604 116191071        479  0.71%  0.51%  0.50%   0 ARP Input        
 348     5736736   7812055        734  0.63%  4.19%  5.03%   0 XDR mcast        
 546    36531108 132425650        275  0.63%  0.37%  0.28%   0 Port manager per 
  35    56337684 306101724        184  0.23%  0.42%  0.30%   0 IPC Seat Manager 
 330   287962916 871459868        330  0.23%  0.39%  1.61%   0 SNMP ENGINE      
 286      7682841067821917          0  0.15%  0.07%  0.07%   0 Ethernet Msec Ti 
 626      354112    825565        428  0.15%  0.11%  0.09%   0 IPv6 Input       
   3      754316 523105917          1  0.15%  0.10%  0.09%   0 HSRP Common      
 385     2182508  14151135        154  0.15%  0.10%  0.14%   0 L3 Manager       
 317    44655884 658073408         67  0.07%  0.04%  0.21%   0 PDU DISPATCHER   
 395     4363480   4661440        936  0.07%  0.04%  0.05%   0 HIDDEN VLAN Proc 
 323     1161648 134374319          8  0.07%  0.04%  0.05%   0 VRRS Main thread 
  56     2269676   9230664        245  0.07%  0.08%  0.07%   0 Per-Second Jobs  
 240     1449416   1870109        775  0.07%  0.04%  0.05%   0 Compute load avg 
 243   1488814081309230003        113  0.07%  0.13%  0.76%   0 IP SNMP          
  • 1
  • 2
  • 3
  • 4
  • 5
Overall Rating: 0 (0 ratings)
Loading.
e.ciollaro Sun, 06/29/2014 - 02:03
User Badges:
  • Silver, 250 points or more

Hi,

BGP Router process is in charge to determine the best path and processes any route "churn". It also sends and receives routes, establishes peers, and interacts with the routing information base (RIB).

(http://www.cisco.com/c/en/us/support/docs/ip/border-gateway-protocol-bgp/107615-highcpu-bgp.html)

So I suggest to check what make this process working hard. Depending on that you can choose what to do: bgp dampening (if you have many changes in advertisement received form a neighbor), tuning timer (if neighbor is flapping), using peer-group / update-groups to reduce the amount of job your BGP process has to do to process updates etc...

Have a look here: https://supportforums.cisco.com/discussion/11604471/high-cpu-usage-bgp-router-process

 

Bye,

enrico

 

PS please rate if useful

 

 

 

paul driver Sun, 06/29/2014 - 05:08
User Badges:
  • Green, 3000 points or more
Hello What is your router make/model? Do you have soft inbound configuration enabled? Are you excepting a full internet route table? Res Paul

Actions

This Discussion