Digi 90000566_H manual Lcpkeepalive=onoff, Lcpkaquiettime=10-86400 seconds, Asyncmap=hex string

set pppoutbound

lcp_keepalive={onoff}

Specifies whether the device server sends Link Control Protocol (LCP) echo requests after a “quiet” interval, in order to test the PPP link and/or keep it alive. “Quiet” means not having received any bytes over the PPP link for a specified time interval, which is set by the “lcp_ka_quiet_time” option. In PPP networks that support LCP echoes, an LCP echo reply is returned by the remote end of the PPP connection.

Even if LCP keepalives are disabled in this device (by

“lcp_keepalive=off”), the device will still reply to LCP echo request messages it may receive from the remote side of the PPP connection by sending an LCP echo reply message. But the device itself will not originate any LCP echo request messages.

The options are:

on

The device server sends LCP echo requests after a configurable “quiet” interval, set by the “lcp_ka_quiet_time” option.

off

The device server does not send LCP echo requests.

lcp_ka_quiet_time=10-86400 seconds

Specifies the “quiet” interval, in seconds, after which the device server sends an LCP echo request. “Quiet” means not having received any bytes over the PPP link for the interval specified by this option.

lcp_ka_max_missed_replies={2-2550=ignore missed replies} Specifies how many consecutive echo replies may be missed before the device server disconnects the PPP link. A value of 0 (zero) specifies that the device server should not act on missed LCP echo replies by disconnecting the PPP link. Note that if bytes of any kind, LCP echo reply or otherwise, are received, the PPP link is deemed to be active, and the “missed LCP echo replies” count is reset to zero.

asyncmap=hex string

A mask for PPP connections that defines which of the 32 asynchronous control characters to transpose. These characters, in the range 0x00 to 0x1f, are used by some devices to implement software flow control.

These devices may misinterpret PPP transmission of control characters and close the link. This mask tells PPP which characters to transpose.

The default is FFFF, which means transpose all 32 control characters. Any combination is valid. The following are the masks most likely used:

FFFFFFFF

Transpose all control characters.

00000000 Transpose none.

000A0000

Transpose Ctrl-Q and Ctrl-S.

Chapter 2 Command Descriptions 169