Cisco Cisco IPS 4255 Sensor

For IPS standalone appliances with 1 G and 10 G fixed or add-on interfaces, the maximum jumbo frame 
size is 9216 bytes. 

A jumbo frame is an Ethernet packet that is larger than the standard maximum of 1518 bytes (including 
Layer 2 header and FCS).

Because MySDN has been decommissioned, the URL in older versions of the IDM and the IME is no 
longer functional. If you are using IPS 6.0 or later, we recommend that you upgrade your version of the 
IDM and the IME.

You can upgrade to the following versions to get the functioning MySDN URL:

IDM 7.0.3

IME 7.0.3

IPS 7.0(4)E4, which contains IDM 7.0.4

If you are using version IPS 5.x, you must look up signature information manually at this URL:

For detailed information on MySDN, for the IDM refer to 

 and for the IME refer to 

A new version of the IDM is bundled with the E4 engine update, IDM 7.0.3. We have modified the IDM 
to correctly display and edit the additional values allowed in the Retired parameter field of a signature. 
We have also modified the IDM and its associated ASDM Launcher application to increase the upper 
memory limit that Java VM uses. With this change you can display and tune more signatures in the IDM.

We recommend that ASDM users upgrade to ASDM 6.3 or later. The Java VM upper memory limit of 
ASDM 6.3 has been increased. Older versions of ASDM may not have enough available memory for 
IDM7.0.3 to function properly.

After upgrading to the E4 signature engine, disconnect and restart any open IDM sessions to make sure 
that your system downloads and uses the latest IDM application from the sensor.

For more information about the new values allowed in the Retired parameter for a signature, see