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CSR1000V gets unreachable after around 1h


i currently have a problem with a CSR1000V AWS test installation that something disables the primary interface of the CSR and reenables it, unfortunately this brakes my connectivity to the box.

The System Log shows ->
*Apr  1 16:27:30.747: %LINK-5-CHANGED: Interface GigabitEthernet1, changed state to administratively down
*Apr  1 16:27:31.748: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet1, changed state to down
*Apr  1 16:27:39.116: %LINEPROTO-5-UPDOWN: Line protocol on Interface Tunnel1, changed state to down
*Apr  1 16:27:39.119: %DUAL-5-NBRCHANGE: EIGRP-IPv4 10: Neighbor (Tunnel1) is down: interface down
*Apr  1 16:27:44.105: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet1, changed state to up
*Apr  1 16:27:56.183: %LINEPROTO-5-UPDOWN: Line protocol on Interface Tunnel0, changed state to down


I also can't get it back to work when i reload the box. It hangs in "1/2 checks"

Did you have such issues before ?

Is it possible that i need to allow specific IPs from Amazon that they can do ICMP-healtchecks ?

In a "non-cloud" environment i would block everything i don't need

2 Replies 2

Cisco Employee
Cisco Employee

As for the health checks with ping you would need too enable ICMP on Amazon firewall,

around 2nd minute , it is presented.

Cisco Employee
Cisco Employee

Are you still seeing this issue? I have not seen the primary interface going down or flapping in AWS. Can you attach your configuration?