Juniper JUNOSE 11.1.X - LINK LAYER CONFIGURATION 4-7-2010, Configuration Manual

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ppp ipcp lockout
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Use to terminate invalid IPv4 subscribers and prevent additional IPCP
negotiations.
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When Internet Protocol version 6 Control Protocol (IPv6CP) is active, this
command enables unused IPv4 addresses, which are allocated for the IPv6
subscribers, to be available for the IPCP services for an internally defined time
interval (10 seconds). When the time interval elapses, the subscriber must connect
again to negotiate IPCP.
For more information about how the IPv4 addresses are restored, see Chapter
7, Configuring Point-to-Point Protocol .
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Example
host1(config-subif)# ppp ipcp lockout
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Use the no version to disable the IPCP lockout option on the interface.
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See ppp ipcp lockout.
ppp keepalive
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Use to specify the keepalive timeout value in the range 10–64800 seconds. If
issued in the context of an individual interface, the command affects only that
interface. If issued in the context of an MLPPP bundle, the command affects all
MLPPP link interfaces that are member links of that bundle.
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When the keepalive timer expires, the interface always sends an LCP echo
request, regardless of whether the peer is silent.
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When the keepalive interval is 30 seconds (the default), a failed link is detected
between 90 and 120 seconds after failure.
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Use ppp keepalive without a value to restore the default, 30 seconds.
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Example
host1(config-if)# ppp keepalive 50
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Use the no version to disable keepalive.
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See ppp keepalive.
ppp log
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:
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pppPacket —Enables PPP packet logging
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pppStateMachine —Enables PPP state machine logging
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Example
host1(config-profile)# ppp log pppPacket
Configuring Static MLPPP
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Chapter 9: Configuring Multilink PPP