Cisco Cisco IOS Software Release 12.2(25)S

To configure the CNS event gateway, which provides CNS event services to Cisco IOS clients, use the 
cns event command in global configuration mode. To remove the specified event gateway from the 
gateway list, use the no form of this command.

cns event {host-name | ip-address} [encrypt] [port-number] [backup] [failover-time seconds] 

[keepalive seconds retry-count] [source ip-address]

no cns event {host-name | ip-address} [encrypt] [port-number] [backup] [failover-time seconds] 

[keepalive seconds retry-count] [source ip-address]

The event gateway port number default is 11011 with no encryption or 11012 with encryption.
The number of seconds to wait for a primary gateway route defaults to 3.
The system uses format 2.

Global configuration

Host name of the event gateway.

IP address of the event gateway.

(Optional) Uses a Secure Socket Layer (SSL) encrypted link to the event 
gateway.

This keyword is available only in images that support SSL.

(Optional) Port number for the event gateway. The default is 11011 with no 
encryption or 11012 with encryption.

(Optional) Indicates that this is the backup gateway. If omitted, indicates that 
this is the primary gateway. Before you can configure a backup gateway, you 
must already have configured a primary gateway. Optional keywords, if 
omitted, are set as for the primary gateway.

failover-time seconds

(Optional) Specifies a time interval in seconds to wait for the primary 
gateway route after the route to the backup gateway is established. The 
default is 3.

keepalive seconds 
retry-count

(Optional) Keepalive timeout in seconds and retry count.

source ip-address

(Optional) IP address to use as the source for CNS communications.

12.2(2)T

This command was introduced.

12.0(18)ST

This command was integrated into the Cisco IOS 12.0(18)ST Release.

12.0(22)S

This command was integrated into Cisco IOS Release 12.0(22)S.

12.2(2)XB

This command was implemented on Cisco IAD2420 series Integrated 
Access Devices (IADs).

12.2(8)T

The encrypt, init-retry, source, and force-fmt1 keywords were added.