Juniper JUNOSE SOFTWARE 11.0.X - LINK LAYER CONFIGURATION GUIDE 4-1-2010 Configuration Manual page 563

ppp ipcp netmask
ppp ipcp prompt-option dns
ppp keepalive
ppp log
Use to specify Internet Protocol Control Protocol (IPCP) option 0x90 for each
PPP interface. By default, IPCP option 0x90 is disabled on the interface.
Example
host1(config-profile)#ppp ipcp netmask
Use the no version to disable IPCP option 0x90 option on the interface.
See ppp ipcp netmask.
Use to prompt the CPE (Customer Premises Equipment) to negotiate the IPCP
primary and secondary DNS options that are locally available with the broadband
remote access server.
Use the no version to disable the command
See ppp ipcp prompt-option dns
Use to specify the keepalive timeout value.
This command always operates in high-density keepalive mode when PPP is
layered over ATM or PPPoE.
When the keepalive timer expires, the interface searches for frames received
from the peer in the prior keepalive timeout seconds. If the interface finds such
frames, it does not send an LCP echo request (keepalive). Keepalive packets are
sent only if the peer is silent (no traffic was received from the peer during the
previous keepalive timeout interval). If both sides are configured with keepalive,
receipt of an LCP echo request by one end suppresses the transmission of an
LCP echo request by that end.
You can specify a timeout value in the range 30–64800 seconds. The default
value is 30 seconds.
If the keepalive interval is 30 seconds, a failed link is detected between 90 and
120 seconds after failure.
Use ppp keepalive without a value to restore the default, 30 seconds.
Example
host1(config-profile)#ppp keepalive 50
Use the no version to disable keepalive.
See ppp keepalive.
Use to enable PPP packet or state machine logging on any dynamic interface
that uses the profile being configured. Specify one of the following keywords:
pppPacket Enables PPP packet logging
Chapter 15: Configuring Dynamic Interfaces
Configuring a Dynamic Interface from a Profile
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