Sierra Wireless WISMO218 User Manual download pdf (Page 14)

WA_DEV_W228_UGD_002 Rev 003 Page 14 of 78

WISMO228 TCP/IP AT Commands

Manual

 if <mode>=4

Action Command

AT+WIPCFG=<mode>,<action>

Read Command

AT+WIPCFG?

+WIPCFG: <optnum>,<value>

[+WIPCFG: <optnum>,<value>[..]]

Test Command

AT+WIPCFG=?

Parameters and Defined Values

<mode>:

requested operation

stop TCP/IP stack

start TCP/IP stack

configure TCP/IP stack

display TCP/IP application version

TCP/IP stack configuration management

<opt num>:

configuration option identifier

WIP_NET_OPT_IP_TTL  Default TTL of outgoing data grams

This option is a limit on the period of time or number of iterations or

transmissions that a unit of data can experience before it should be discarded.

The time to live (TTL) is an 8-bit field in the Internet Protocol (IP) header. It is

the 9th octet of 20. The default value of this parameter is 64. Its value can be

considered as an upper bound on the time that an IP datagram can exist in an

internet system. The TTL field is set by the sender of the datagram, and reduced

by every host on route to its destination. If the TTL field reaches zero before the

datagram arrives at its destination, then the datagram is discarded. This is used

to avoid a situation in which an undelivered datagram keeps circulating in the

network.

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Sierra Wireless WISMO218 User Manual Page 14