Patch

This section describes how to upload, install, and uninstall patches.

Context

There are two types of patches: cold patch and hot patch. A cold patch takes effect only after the switch restarts and a hot patch takes effect immediately after it is loaded to the switch.

A patch is a kind of software compatible with the system software. It is used to remove critical bugs of the system software. The extension name of the patch file is .pat.
Before loading patches, you need to save patch files to the storage device of the switch. Patch files are uploaded to the switch using HTTP.
After a patch is uninstalled, delete the patch from the memory.

Procedure

Choose Maintenance > System Maintenance > Patch to access the Patch page.

Table 1 describes the parameters on the page.

**Table 1** Parameters on the **Patch** page
Item	Description
Upload Patch	Allows you to select the patch file to be uploaded.
Load Patch	Allows you to select the patch file to be loaded.
Patch Info	Indicates patch information: Current patch file Version number Status NOTE: Click Uninstall to delete the installed patches.

Click to select the patch file to be uploaded and click Upload.
Select the patch file to be loaded and click Load. The system will display the currently loaded patch file in Patch Info.