11-25-2010 02:09 AM - edited 03-04-2019 10:34 AM
Dears,
I have a 7206 VXR NPE-G2 running in an ISP at 40% CPU in peak time.
I applied NAT with overload based on the ACL below. After that, CPU started to reached 90 % in peak time.
Is that expected or I am missing something ?
Extended IP access list MATCH_VOIP
30 permit udp any any eq 5070
35 permit tcp any any eq 5070
40 permit udp any any eq 5060
45 permit tcp any any eq 5060
50 permit udp any any eq 1720
55 permit tcp any any eq 1720
60 permit udp any any eq 1731
65 permit tcp any any eq 1731
ip nat inside source route-map NAT_VOIP_GLOBAL pool VOIP_GLOBAL overload
Regards,
11-28-2010 02:25 PM
The 7200 NPE-G2 is a software switched router so any additional features enabled on the packet path increases the amount of CPU used. As to if this is reasonable or not, I suspect there are documents on the cisco site indicating the expected CPU utilization for a given featureset.offered load combination.
11-28-2010 02:48 PM
I suspect there are documents on the cisco site indicating the expected CPU utilization for a given featureset.offered load combinati
That is not the case, there are no such documents available, and everything is pretty much based on individual expereince and common sense.
11-28-2010 02:46 PM
witani wrote:
Dears,
I have a 7206 VXR NPE-G2 running in an ISP at 40% CPU in peak time.
I applied NAT with overload based on the ACL below. After that, CPU started to reached 90 % in peak time.
Is that expected or I am missing something ?
Extended IP access list MATCH_VOIP
30 permit udp any any eq 5070
35 permit tcp any any eq 5070
40 permit udp any any eq 5060
45 permit tcp any any eq 5060
50 permit udp any any eq 1720
55 permit tcp any any eq 1720
60 permit udp any any eq 1731
65 permit tcp any any eq 1731
ip nat inside source route-map NAT_VOIP_GLOBAL pool VOIP_GLOBAL overload
Try compiled (turbo) ACL:
http://www.cisco.com/en/US/products/sw/iosswrel/ps1829/products_feature_guide09186a00800881a7.html
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