Cisco Support Community
cancel
Showing results for 
Search instead for 
Did you mean: 
Announcements

Welcome to Cisco Support Community. We would love to have your feedback.

For an introduction to the new site, click here. And see here for current known issues.

New Member

Invalid.....

In plain english, please what is INVLAID SPI? What does it do and what is the benefit or significance of it.

I have searched through the Cisco Website but it is still not realy clear to me.

Thanks

1 REPLY
Hall of Fame Super Silver

Re: Invalid.....

Adetutu

In plain English: an SPI is a Security Parameter Index and is part of IPSec. In negotiating IPSec Security Associations an index is assigned. Every IPSec message that is transmitted contains the index value which identifies the particular Security Association used for that packet. If a packet is received and the index it contains does not match one of the indexes on the router then it generates an error about invalid SPI.

HTH

Rick

140
Views
3
Helpful
1
Replies
CreatePlease login to create content