This object indicates PW-ID. This value is set for the parameter only when the VPLS is in Martini mode. Otherwise, the value is 0.
Because hwVpnCfgPingPwId ranges from -2147483647 to +2147483647, failing to cover the range from 2147483648 to 4294967295, this object
ranging from 0 to 4294967295 is therefore added.