ADC

Class E IPv4 packets

September 14, 2021

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By default, the Citrix ADC appliance drops any packets if they contain any class E IPv4 address in the source IP or the destination IP fields. If your setup is using class E IPv4 addresses, you can configure the Citrix ADC appliance to process class E IPv4 packets.

Before you begin

Before you begin configuring a Citrix ADC appliance to process class E IPv4 packets, note the following points:

Citrix ADC appliances do not support configuring any Citrix ADC owned IPv4 address (for example, SNIP and VIP) in the class E range. Citrix ADC appliances only support processing of class E IPv4 packets.
A Citrix ADC appliance internally uses class E IPv4 addresses for the IPv6 feature. The Citrix ADC appliance does not support both features (processing class E IPv4 packets and IPv6 support) working at the same time. The Citrix ADC appliance imposes a restriction to not enable the IPv6 feature when processing of class E IPv4 packets is enabled, and vice versa.

Configuration steps

Configuring a Citrix ADC appliance to process class E IPv4 packets consist of the task of enabling the IPv4 Class E address clients (allowClassEIPv4) Layer 3 parameter.

CLI procedures

To configure the Citrix ADC appliance to process Class E IPv4 packets by using the CLI:

At the command prompt, type:

set l3param -allowClassEIPv4 (ENABLED DISABLED)
show l3param

Sample Configuration:

> set l3param -allowClassEIPv4 ENABLED

Done

> sh l3param

    Network L3 related Configuration Parameters

    icmpgen_rate_threshold      : 100

    srcnat                      : ENABLED

    override_rnat               : DISABLED

    drop_df_flag                : DISABLED

    .

    .

    .

    IPv6DynamicRouting         : DISABLED

    allowClassEIPv4            : ENABLED

Done
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GUI procedures

To configure the Citrix ADC appliance to process Class E IPv4 packets by using the GUI:

Navigate to System > Network, and then in the Settings section, click Configure Layer 3 Parameters.
Select IPv4 Class E address clients and click OK.

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Class E IPv4 packets

September 14, 2021

Contributed by:

September 14, 2021

Contributed by:

Class E IPv4 packets

Before you begin

Configuration steps

CLI procedures

GUI procedures

In this article