HLDC
show controller serial 0/1
V35 DCE cable
clockrate 9600 need to set
int s1
compress stac
debug serial int
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PPP
int s0/0
encapsulation ppp
int s0/1
encapsulation ppp
switch(config)#int multilink 1
switch(config-if)#ip address 172.16.1.1 255.255.255.252
switch(config-if)#encapsulation ppp
switch(config-if)#multilink-group 1
switch(config-if)#int s0/0
switch(config-if)#multilink-group 1
switch(config-if)#int s0/1
with sh ppp multilink we can loadbalancing for int s0/0 and s0/1 interface
inorder to secure and authentication
we need to configure the following config
username r2 password cisco
int s0/0
ppp authentication chap
int s0/1
ppp authentication chap
and both router need to confgure with the config setting
username r1 password cisco
int s0/0 ppp authentication chap
int s0/1
ppp authentication chap
