cancel
Showing results for 
Search instead for 
Did you mean: 
cancel

Who Me Too'd this topic

GETVPN - Rekey High CPU

Jorge Lozano
Level 1
Level 1
Hi everybody.

I got GETVPN infrastructure, with two keyservers and 32 group members.

Every time the rekey process takes place, all the groupmembers present high cpu usage and the Crypto ACL consumes all of my resources.

I am very lost, because is a pretty straight forward configuration.


ROUTER# show process cpu history

ROUTER   10:49:38 AM Tuesday Sep 30 2014 UTC

                                                                
    9999999999999999444441111111111     11111     11111111111111
    999999999999999988888222223333399999333339999922222666662222
100 ****************                                            
 90 ****************                                            
 80 ****************                                            
 70 ****************                                            
 60 ****************                                            
 50 *********************                                       
 40 *********************                                       
 30 *********************                                       
 20 *********************                              *****    
 10 ************************************************************
   0....5....1....1....2....2....3....3....4....4....5....5....6
             0    5    0    5    0    5    0    5    0    5    0
               CPU% per second (last 60 seconds)

                                                                
    121111121112111112121212221112111111122211121111111111112212
    817295705770864893417188157650667447520279707886569543861074
100                                                             
 90                                                             
 80                                                             
 70                                                             
 60                                                             
 50                                                             
 40                                                             
 30                        * *                                  
 20 *** ********** **# #***#*#***#***  ****#*#**********  ***#*#
 10 ############################################################
   0....5....1....1....2....2....3....3....4....4....5....5....6
             0    5    0    5    0    5    0    5    0    5    0
               CPU% per minute (last 60 minutes)
              * = maximum CPU%   # = average CPU%

                                                                            
    929 9 9 9 99 9 929299192939199 9 9 99 9 9 9 99 9 9 9 99 919 9 99 919 9 9
    939994959599798929199496919099595949949595949959496949949495949989099999
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%

ROUTER#show process cpu sorted | e 0.00% 
CPU utilization for five seconds: 99%/23%; one minute: 39%; five minutes: 19%
 PID Runtime(ms)     Invoked      uSecs   5Sec   1Min   5Min TTY Process 
 251     1298116        6286     206509 74.91% 22.56%  5.21%   0 Crypto ACL       
 325       33652       32198       1045  0.23%  0.37%  0.43% 514 Virtual Exec     
   2        4428       84728         52  0.15%  0.06%  0.07%   0 Load Meter       
 119      356324      613777        580  0.15%  0.25%  0.27%   0 IP Input         
  41       10124      423671         23  0.07%  0.08%  0.07%   0 Per-Second Jobs  
 151       18788      601822         31  0.07%  0.18%  0.22%   0 CEF: IPv4 proces 
ROUTER# 

 

Keyserver conf:

crypto isakmp policy 100
 encr aes
 hash md5
 authentication pre-share
 group 2
crypto isakmp key cisco address 0.0.0.0
!
!         
crypto ipsec transform-set CRYPTO_AES esp-aes esp-sha-hmac 
!
crypto ipsec profile PHASE-II
 set security-association lifetime seconds 7200
 set transform-set CRYPTO_AES 
!
crypto gdoi group GETVPN_CLIENT
 identity number 7
 server local
  rekey lifetime seconds 43200
  rekey retransmit 10 number 2
  rekey authentication mypubkey rsa REKEY_CLIENT
  rekey transport unicast
  sa ipsec 1
   profile PHASE-II
   match address ipv4 ACL
   no replay
  address ipv4 10.1.1.176
  redundancy
   local priority 10
   peer address ipv4 10.1.1.176

 

Thanks for your advice

Who Me Too'd this topic