Cisco Cisco IPS 4255 Sensor

ROMMON uses TFTP to download an image and launch it. TFTP does not address network issues such 
as latency or error recovery. It does implement a limited packet integrity check so that packets arriving 
in sequence with the correct integrity value have an extremely low probability of error. But TFTP does 
not offer pipelining so the total transfer time is equal to the number of packets to be transferred times 
the network average RTT. Because of this limitation, we recommend that the TFTP server be located on 
the same LAN segment as the sensor. Any network with an RTT less than a 100 milliseconds should 
provide reliable delivery of the image. Be aware that some TFTP servers limit the maximum file size that 
can be transferred to ~32 MB.

For the procedure for downloading IPS software updates from Cisco.com, see 

For the procedure for configuring automatic updates, for the CLI refer to 

for the IDM refer to 

 

the IME refer to 

Use the following tools for configuring Cisco IPS 7.0(8)E4 sensors:

Cisco IDM 7.1.3

IDM 7.1.1 is included within the IPS 7.0(8)E4 files.

IDM 7.1.1 requires JRE 1.6 or later. 

Cisco IME 7.2.1

You can use IME 7.2.1 to configure IPS 6.1, 6.2, 7.0, and 7.1 sensors.

IDM 7.1.3 is included within IME 7.2.1.

IPS CLI 7.0.8

ASDM 5.2 and later

Use the following tools for monitoring Cisco IPS 7.0(8)E4 sensors:

IME 7.2.1

MARS minimum version 5.2 and latest version 6.0.5

CSM 4.0 and later

You may need to configure viewers that are already configured to monitor the earlier version 
sensors to accept a new SSL certificate for the Cisco IPS 7.0(8)E4 sensors.