eG Monitoring
 

Measures reported by CtxNsNat64Test

Large scale NAT64 is an IPv6 transition solution for ISPs with IPv6 infrastructure to connect their IPv6-only subscribers to the IPv4 Internet.

The NAT64 architecture of an ISP using a Citrix ADC appliance consists of IPv6 subscribers accessing the IPv4 Internet through a Citrix ADC appliance deployed in the ISP’s core network. IPv6 subscribers are connected to the ISP core network through the ISP’s IPv6-only access network.

The large scale NAT64 functionality of a Citrix ADC appliance enables communication between IPv6 clients and IPv4 servers through IPv6-to-IPv4 packet translation, and vice versa, while maintaining session information on the Citrix ADC appliance.

Using the CtxNsNat64Test, administrators can determine how many sessions of what types (TCP, UDP, and ICMP) were facilitated by NAT64 between IPv6 clients and IPv4 servers. This way, administrators can assess the session load imposed by NAT64 on the appliance, and what type of sessions contributed the maximum to this load.

Outputs of the test: One set of results for the Citrix ADC VPX/MPX appliance being monitored.

The measures made by this test are as follows:

Measurement Description Measurement Unit Interpretation
Tcp_sessions Indicates the number of TCP sessions created by NAT64 during the last measurement period. Number

 

Udp_sessions Indicates the number of UDP sessions created by NAT64 during the last measurement period. Number

 

Icmp_sessions Indicates the number of ICMP sessions created by NAT64 during the last measurement period. Number

 

Total_sessions Indicates the total number of NAT64 sessions created during the last measurement period. Number

This is a good indicator of the NAT64 session load on the appliance. If the value of this measure is unusually high, compare the value of the TCP sessions, UDP sessions, and ICMP sessions measures to know which type of sessions contributed to the heavy workload.