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can somebody explain how HMAC works in IPSec? i know HMAC attaches secret key to HASH. But whats that secret key? and how it is created? and how it passes to another peer (responder)? Why its required in IPSec? ThanksAC
Hi All, As we are all aware that HASHing is user to verify integrity in cryptography. I have a query about hashing. Suppose a man in the middle attacker manipulates the data and creates new HASH (by running algorithm on manipulated data) using the s...
Hi All,I'm getting high CPU utilization in Cisco-3750E because of hpm main process. Please share your suggestions for decreasing the same.SECXI-DC-SWT-DS#sh processes cpu sorCPU utilization for five seconds: 63%/18%; one minute: 57%; five minutes: 58...
Hi,We are getting the HIGH CPU process due to Cat4k Mgmt Lopri & Cat4k Mgmt HiPri with both core Switches installed at the Customer site.CPU utilization for five seconds: 52%/4%; one minute: 53%; five minutes: 53% PID Runtime(ms) Invoked uSecs...
Hi Marcin Latosiewicz,Thanks for your info .... can you explain how HMAC works in IPSec? i know HMAC attaches secret key to HASH. But whats that secret key? and how it is created? and how it passes to another peer (responder)? ThanksAC
Hello Max,Pls find the outputsSECXI-DC-SWT-DS#sh processes cpu sor | exc 0.00%CPU utilization for five seconds: 52%/16%; one minute: 53%; five minutes: 55% PID Runtime(ms) Invoked uSecs 5Sec 1Min 5Min TTY Process 124 112080284 1667...
Hi all,issue has been resolved...it is becase of MAC address learning, disabled proxy-arp (no proxy-arp) in all VLAN interfaces. Suddenly cpu utilization went down from 70% to 16%Thanks to all, who are supported me...regards,AC
