IDS Links are flapping in 6509

[gangadhargp]

Hi...

          IDSM sensing interfaces are flapping in 6509 switch, and log shipping will also stop's intermediatly. Can any one help...

Jun 27 13:51:02.716 IST: %LINEPROTO-SP-5-UPDOWN: Line protocol on Interface GigabitEthernet2/8, changed state to down

Jun 27 13:51:03.484 IST: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet2/8, changed state to up

Jun 27 13:51:02.764 IST: %LINK-SP-3-UPDOWN: Interface GigabitEthernet2/8, changed state to down

Jun 27 13:51:03.268 IST: %LINK-SP-3-UPDOWN: Interface GigabitEthernet2/7, changed state to up

[Thulasi Shankar]

Hi Gangadhar,

It is normal to see the promiscuous interfaces go up and down.

Another scenario is during configuration changes. When signature updates are installed, configuration changes made, or when signature tunings are performed, it is expected to have the interface go down and then back up again.

Apart from the above two cases, this issue is seen if the sensor is oversubscribed or extremely busy and moved to bypass mode.

Hope this answers your query.

Thulasi Shankar