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Today, I'd like to share a case.
Problem Description
【 Problem Summary 】 U2000 one MA5680T maintenance state still reports alarm
【 Problem Details 】 MA5680T using the NMS is set to “ ” in maintenance mode, when the network element for optical path is interrupted is unreachable by the NMS, the NMS still reports “ NE fails to communicate with the server ” alarm.
U2000 version is V200R014C600SPC203
Problem Analysis
1, NE is set to “ maintenance state ” Shi Hui accordingly on the M2000 generates 2 “ Mask Rule ”, a “ alarm source ”, a “ event source ”, but the “ Mask Rule ” is set to “ is not found in the Maintenance state ” entry corresponding to the NE.
2, U2000 “ masking rules can be configured by the NMS ” item indicates the maximum number of a maximum of 200 records. If more than 200 records, the NE can still be set to “ maintenance state ”. but the mask rule will not be generated.
3. collect statistics of live network “ masking rules ” entries is 83 messages, but learned from the customer the NE is in the very early is set to maintenance mode, and was for many NEs at the same time due to special reasons ” set “ maintenance state, may set the NE for what was then the “ maintenance state ” “ number of masking rules ” items exceeded 200. As a result, the does not synchronize the generated entries.
4, ” the NE from the “ maintenance state to “ normal ” ” and is then changed to “ maintenance state, and then check whether the NMS “ Mask Rule ” have corresponding entries are generated.
Root Cause
NE is set to “ maintenance state ”,U2000 “ masking rules on the U2000 ODN NMS ” exceeded 200 records. As a result, the NE ” set “ maintenance state cannot be synchronized to create corresponding “ shielding rule ” for masking alarms.
Solution Description
Workaround: Setting an NE to “ maintenance state ” “ the NMS whether the number of masking rules ” has more than 200 records, set open “ masking rules ” view has been synchronized to generate corresponding shielding rule items.
solution:U2000 V200R14C600SPC203 versions after “ number of masking rules ” reaches 200, set the NE “ maintenance state ” Shi Hui contains error information, the previous U2000 version does not have prompt.
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