Tag :: CCS-720XP

NAT (Network Address Translation) is a feature that allows each packet's addresses to be rewritten according to the user configuration. The packet qualification happens within the ingress pipeline of the forwarding plane, then the egress pipeline uses a shared table memory to decide which fields to adapt.

This feature, when enabled, allows NAT to function on traffic traversing between VRFs, over inter-VRF static routes or routes leaked to VRFs other than where they were configured.

Non default VRF support is now available for Static unicast NAT. Twice NAT. Dynamic NAT. VRF support

NAT has been supported in DCS-7150 for many years. Starting at EOS 4.21.6F, NAT functionality is supported on certain 7050X3 platforms.

Hardware accelerated NAT for transit fragmented traffic is enabled by default. It’s important to note that

Dynamic NAT is a feature which dynamically allocates an IP address to an incoming or outgoing flow. This address will replace source or destination IP for all packets of the flow.

The packet path, prerequisites, and restrictions listed in this document apply to this feature as well Dynamic Twice NAT is a variant of the dynamic NAT feature where both the source and destination IP can be modified while forwarding a packet. One of the IP addresses will be dynamically assigned, while the other will be statically assigned.

Multicast NAT is a feature that performs NAT translations on multicast traffic. It can be configured under SVIs,

Static NAT rules may optionally include an access list to filter the packets to be translated.