Configuring Ppp Negotiation - 3Com MSR 50 Series Configuration Manual

370 C 19: PPP
HAPTER AND
Configuring PPP
Negotiation
MP C
ONFIGURATION
To do...
Enter the specified interface view
Configure local username
Configure local user
and its corresponding
password
Configure the default
CHAP authentication
password
Introduction to PPP negotiation parameters
PPP negotiation parameters include: timeout interval negotiation, IP address
negotiation and DNS address negotiation.
Timeout interval negotiation: In PPP negotiation, if, during the timeout interval,
the local device does not receive the response packet from the peer, PPP will
resend the last packet. The time ranges from 1 to 10 seconds.
IP address negotiation can be implemented in the following two ways:
Configure the device as client: when the local interface, with PPP encapsulated,
■
is not configured with an IP address, whereas its peer is configured with an IP
address, you can configure IP address negotiation for the local interface so that
it can receive IP address allocated from its peer. This configuration applies to
the situation when you access internet via ISP, and obtain an IP address from
the ISP.
Configure the device as server: If the device is configured as a server to allocate
■
IP address for its peer, you should first configure a local IP address pool in
domain view or system view, indicate the scope of the address pool, and then
specify the address pool used for the interface in interface view.
In PPP address negotiation, a device can also be configured to negotiate DNS
address, through which the device can either allocate DNS address to the peer, or
receive DNS address from the peer. Generally speaking, if the device is connected
with a PC through PPP, you should configure the device to allocate DNS address
for the peer. In doing so, the PC can access the Internet directly using the domain
name. Or, if the device is connected with an access server of a carrier through PPP,
you should configure the device to accept or actively request a DNS address from
its peer. In this way, the device can use the DNS address allocated by the access
server to resolve domain name.
Configuring PPP negotiation parameters
Follow these steps to configure PPP negotiation parameters:
Exit to system view
Create local user, and
enter local user view
Configure local user's
password
Configure the default
CHAP password when
implementing CHAP
authentication
Use the
command... Remarks
interface -
interface-type
interface-number
ppp chap user Required
username
quit -
local-user Optional
username
password { cipher | Optional
simple } password
ppp chap Optional
password { cipher |
simple } password