13.7.3. <channel> disable
Syntax:
<channel> disable
Description:
Clear the enable flag for a PPP channel. This is the default setting. Disabling does not remove other configured
information about this channel. In the PPP state machine, this sets the PPP link to ‘closed’. If it is already closed, there
is no effect.
Configuration saving saves this information. By default all channels are disabled.
13.7.4. <channel> discard
Syntax:
<channel> discard [<size>]
Description:
Discard is a PPP LCP packet type, which is like the Echo packet type but does not generate a return. This can be used for
more careful tests of data transfer on the link, for instance at sizes near the negotiated MRU. This command sends an
LCP Discard packet, of the specified size. If no size is given, a minimal sized packet is sent. Arrival of a Discard packet
is logged locally as a level 2 event. The link must be up and operational in order to do the discard test.
13.7.5. <channel> echo
Syntax:
<channel> echo [<size>]
Description:
Echo is an LCP packet, which is used to test an established PPP link. It solicits a ping-like reply from the far end. This
command sends an LCP Echo packet, of the specified size. If no size is given, a minimal sized packet is sent. If a size
greater than the remote Maximum Receive Unit size is specified, the value is reduced to the remote MRU before
sending. The command waits for 1 second for a reply packet to arrive, and prints whether the reply arrived. If a reply
arrives subsequent to this, it is logged as a level 2 event. The link must be up and operational in order to do the echo test.
See also the
discard
test.
13.7.6. <channel> echo every
Syntax:
<channel> echo every <seconds>
Description:
Echo is an LCP packet, which is used to test an established PPP link. It solicits a ping-like reply from the far end. This
command sets a channel to confirm the continued presence of an open PPP connection by sending an LCP echo every
few seconds, and requiring an echo reply. The number of seconds between echo requests is specified as a parameter. If 0
is specified, the function is disabled. Use the
info all
command to read the current state on a channel. Configuration
saving saves this information. By default the function is disabled.
13.7.7. <channel> enable
Syntax:
<channel> enable
Description:
Set the enable flag for a PPP channel. By default this is disabled.
In the PPP state machine, this flag sets the PPP link to ‘open’. If it is already open, there is no effect.
Configuration saving saves this information. By default all channels are disabled.
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