What is the requirement for CHAP authentication on a PPP interface? I thought both routers had to have the same password defined, such as below.
r1> username r2 password demo
r2> username r1 password demo
However, in a packet tracer example the following config is specified.
!!!! Script for R1 !!!!
username ISP password cisco123
interface s0/0/0
encapsulation ppp
ppp authentication chap
interface tunnel0
tunnel mode gre ip
ip address 192.168.2.1 255.255.255.0
tunnel source s0/0/0
tunnel destination 198.133.219.86
!!!! Script for R2 !!!!
en
conf t
username ISP password 123cisco
interface s0/0/0
encapsulation ppp
ppp authentication chap
interface tunnel0
tunnel mode gre ip
ip address 192.168.2.2 255.255.255.0
tunnel source s0/0/0
tunnel destination 209.165.201.1
Is it okay for each router to specify their own password?
r1> username r2 password demo2
r2> username r1 password demo1