As you can see from the title this is a lab where AS3 is our AS, then there are strong>AS1 and AS2 that are our providers and then some other ASs.
Target of this lab is:
1 - having the network 172.1...
ACL (Access Control List) can be used for:
Defining “interesting” traffic for dial on demand routing (DDR) – only trigger dial line up in case of “interesting” traffic