Chapter 72 Miscellaneous
ZyWALL Series CLI Reference Guide
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72.3 Conserve Memory
The Zyxel Device throughput may be slow if dynamic memory usage is reaching a maximum. Conserve
Memory allows Zyxel Device to free up memory by omitting certain security scans.
Note: Enabling this feature is not recommended, as it might reduce the security of your
network.
Conserve Memory is supported on ZyWALL USG (Unified Security Gateway) models only. This does not
include USG FLEX models. For a full list of USG models, see Section 1.1 on page 26.
72.3.1 Converse Memory Settings
To converse dynamic memory, enable one or both of the following settings:
• AV Cloud Query Bypass: Traffic passing through the Zyxel Device is not scanned by Anti-Virus (express
mode).
• UTM Features Bypass: Traffic passing through the Zyxel Device is not scanned by the following services:
IDP, ADP, App Patrol, Anti-Virus (stream mode).
72.3.2 Conserve Memory Commands
The following table lists the Conserve Memory commands.
Table 346 Conserve Memory Commands
COMMAND DESCRIPTION
show mem-conserve status
Displays all Conserve Memory settings.
[no] mem-conserve
activate
Enables or disables the Conserve Memory feature.
[no] mem-conserve av-
bypass falling-threshold
<1..4000>
Sets the on threshold for AV Cloud Query Bypass, in Megabytes (MB).
When the available memory of the Zyxel Device is equal to this value, the Zyxel
Device enables AV Cloud Query Bypass mode.
[no] mem-conserve av-
bypass rising-threshold
<1..4000>
Sets the off threshold for AV Cloud Query Bypass, in Megabytes (MB).
When the available memory of the Zyxel Device is equal to this value, the Zyxel
Device disables AV Cloud Query Bypass mode.
[no] mem-conserve av-
bypass sustained-time
<1..60>
Sets the minimum amount of time, in minutes, that AV Cloud Query Bypass
stays enabled after reaching the falling threshold.
If available memory reaches the rising threshold during this time period, AV
Cloud Query Bypass is not disabled.
[no] mem-conserve utm-
bypass falling-threshold
<1..4000>
Sets the on threshold for UTM Features Bypass, in Megabytes (MB).
When the available memory of the Zyxel Device is equal to this value, the Zyxel
Device enables UTM Features Bypass mode.
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