C ircuit down or Interface down

[SACHIN SHARMA]

In our day to day activity we receive major and minor alarms as shown below

Apr 18 21:32:14 EDST: %ENTITY_ALARM-6-INFO: CLEAR MAJOR Se1/0 Receiver has remote alarm

Apr 18 21:33:05 EDST: %ENTITY_ALARM-6-INFO: ASSERT MAJOR Se1/0 Transmitter is sending remote alarm

Apr 18 21:33:05 EDST: %ENTITY_ALARM-6-INFO: ASSERT MAJOR Se1/0 Receiver is getting AIS

Apr 18 21:33:07 EDST: %LINK-3-UPDOWN: Interface Serial1/0, changed state to down

Apr 18 21:33:07 EDST: %ENTITY_ALARM-6-INFO: ASSERT MAJOR Se1/0 Physical Port Link Down

Apr 18 21:33:07 EDST: %BGP-5-ADJCHANGE: neighbor 10.235.20.78 Down Interface flap

Apr 18 21:33:08 EDST: %LINEPROTO-5-UPDOWN: Line protocol on Interface Serial1/0, changed state to down

Apr 18 21:33:26 EDST: %LINK-3-UPDOWN: Interface Serial1/0, changed state to up

Apr 18 21:33:27 EDST: %LINEPROTO-5-UPDOWN: Line protocol on Interface Serial1/0, changed state to up

What to interpret whether Circuit down or Interface down? and why these alarms are generated?

[paolo bevilacqua · Accepted solution]

Router interfaces rarely fails. Circuits instead, do fail a lot more often.

The router is simply telling you that the circuit has failed.

[SACHIN SHARMA]

Thank you...