interface in warning than up state

hi

iam currently running NPM 11.0.1 , i have make a basic alert of juniper devise , when its interface down Down\Up alert with email

issue is that juniper devise keep emailing interface status alert email which is as below.

	12/6/2014 10:52 AM		Alert: Interface ge-1/2/1 · *** LDN-200MB:LHR-KHI *** on LHR-MX-002.0 is Up.
	12/6/2014 10:52 AM		Alert: Interface ge-1/2/1 · *** LDN-200MB:LHR-KHI *** on LHR-MX-002.0 is Warning.
	12/6/2014 10:52 AM		Alert: Interface ge-1/2/1 · *** LDN-200MB:LHR-KHI *** on LHR-MX-002.0 is Up.
	12/6/2014 10:51 AM		Alert: Interface ge-1/2/1 · *** LDN-200MB:LHR-KHI *** on LHR-MX-002.0 is Warning.
	12/6/2014 9:51 AM		Alert: Interface ge-1/2/1 · *** LDN-200MB:LHR-KHI *** on LHR-MX-002.0 is Up.
	12/6/2014 9:51 AM		Alert: Interface ge-1/2/1 · *** LDN-200MB:LHR-KHI *** on LHR-MX-002.0 is Warning.

whats mean by warning and than UP state on same time ????