09-28-2005 10:50 AM - edited 02-21-2020 02:00 PM
Need to place an ACL on traffic before GRE encap. Not sure if ACL will work on Tunnel interface due to sequence of events: ACL then encap or encap then ACL check.
Thanks
Jerry
09-28-2005 12:03 PM
This document might help you determine how a packet is acted upon.
http://www.cisco.com/en/US/customer/tech/tk648/tk361/technologies_tech_note09186a0080133ddd.shtml
10-03-2005 04:44 PM
You place the ACL on the GRE tunnel interface. An "out" ACL will act on data packets before they are GRE encapsulated. An "in" ACL will act on data packets after they have been GRE decapsulated.
Discover and save your favorite ideas. Come back to expert answers, step-by-step guides, recent topics, and more.
New here? Get started with these tips. How to use Community New member guide