Refer to the exhibit. Routers R1 and R2 have been configured with PPP. CHAP authentication is configured, but for some reason communication cannot be established between them. <div><img src="https://skillset.s3.amazonaws.com/img/question/51411/555f6201 ...
![PPP Operation (3.2) > Cisco Networking Academy Connecting Networks Companion Guide: Point-to-Point Connections | Cisco Press PPP Operation (3.2) > Cisco Networking Academy Connecting Networks Companion Guide: Point-to-Point Connections | Cisco Press](https://www.ciscopress.com/content/images/chap3_9781587133329/elementLinks/03fig19_alt.jpg)
PPP Operation (3.2) > Cisco Networking Academy Connecting Networks Companion Guide: Point-to-Point Connections | Cisco Press
![CISCO CCNA Самостоятельная подготовка к экзамену: Лабораторная работа CCNA #FastPass - PPP Lab 1 Basics CISCO CCNA Самостоятельная подготовка к экзамену: Лабораторная работа CCNA #FastPass - PPP Lab 1 Basics](http://2.bp.blogspot.com/-0xem3i39ppk/UX0xyc7WffI/AAAAAAAAAxk/uvujhT04vcw/s1600/10.+PPP+Lab+1+Basics.jpg)