R3721-F3210-F3171-HP High-End Firewalls Network Management Configuration Guide-6PW101

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2. If the authentication (the remote verifies the local or the local verifies the remote) is configured, the
PPP link goes to the Authenticate phase, where PAP, CHAP, MS-CHAP, or MS-CHAP-V2
authentication is performed.
3. If the authenticatee fails to pass the authentication, the link goes to the Terminate phase, where the
link is torn down and LCP goes down. If the authenticatee passes the authentication, the link goes
to the Network phase. In this phase, NCP negotiation is performed, the LCP state remains Opened,
and the state of IP Control Protocol (IPCP) is changed from Initial to Request.
4. NCP negotiation supports the negotiation of IPCP, through which the IP addresses of both sides
can be determined. NCP negotiation also determines and configures the network layer protocol to
be used. Note that a PPP link can carry a network layer protocol only after the NCP negotiation
succeeds.
5. After the NCP negotiation is performed, the PPP link remains active until explicit LCP or NCP
frames close the link, or until some external events take place (for example, the intervention of a
user).
Figure 61 PPP link phases
For more information about PPP, see RFC 1661.
Performing general PPP configurations
Ste
p
Command Remarks
1. Enter system view. system-view N/A
2. Create a virtual template
(VT) interface and enter its
view.
interface interface-type
interface-number
N/A
3. Set the polling interval.
timer hold
seconds
Optional.
10 seconds by default.
Dead
Authenticate
Terminate
Establish
Network
UP OPENED
FAIL
FAIL
DOWN
CLOSING
SUCCESS/NONE