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Cajun P220, P550, P550R Switch Release Notes, Release 4.0.1 9
Chapter 5 Installation
CAUTION: Release 4.0.1 embedded software requires a MINIMUM of 16 MB DRAM
(Dynamic Random Access Memory) to run on a Cajun P550 Layer 2
supervisor module. BEFORE upgrading, ensure that the switch meets this
16 MB DRAM requirement. A memory upgrade is not required for a Cajun
P550 Layer 3 supervisor module, or the Cajun P220.
NOTE: Release 4.0.1 introduces a new ASCII configuration file format that replaces the
traditional binary (*.cfg) files used to store and restore saved configurations. Before
upgrading the switch to Release 4.0.1, review the Installation section of these release
notes.
The following memory upgrade kits are available through your local sales representative:
Use the following procedure to upgrade from Release 3.1 to Release 4.0.1 of the Cajun P220,
Cajun P550, or Cajun P550R switch. For more detailed installation procedures, refer to the Cajun
P550/P220 Switch Installation Guide.
Downgrading to a Previous Release
1. In the CLI Configuration section of the Web Agent, click Config File Management.
In the Configuration File Management dialog box, save your Release 4.0.1 Running
Configuration (running.txt) to a TFTP server for potential later use.
2. From the Release 4.0.1 Enhanced CLI, clean the current configuration by issuing the
nvram init command.
3. Configure the switch to select the APP that contains the previous code release.
4. Reset the switch.
Table 1-3: Module Descriptions
Description Model Number
16 MB Memory
Upgrade Kit
M5500-MEM16
32 MB Memory
Upgrade Kit
M5500-MEM32