Class E IPv4 packets
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.
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.
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
> 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
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.