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Diffstat (limited to 'src/plugins/srv6-ad/ad_plugin_doc.md')
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diff --git a/src/plugins/srv6-ad/ad_plugin_doc.md b/src/plugins/srv6-ad/ad_plugin_doc.md new file mode 100644 index 00000000000..fc8ebfe352f --- /dev/null +++ b/src/plugins/srv6-ad/ad_plugin_doc.md @@ -0,0 +1,23 @@ +# SRv6 endpoint to SR-unaware appliance via dynamic proxy (End.AD) {#srv6_ad_plugin_doc} + +## Overview + +The "Endpoint to SR-unaware appliance via dynamic proxy" (End.AD) is a two-parts +proxy function for processing SRv6 encapsulated traffic on behalf of an +SR-unaware appliance. The first part decapsulates the incoming traffic and sends +it towards an appliance on a specific interface, while the second +re-encapsulates the traffic coming back from the appliance. + +In this scenario, there are no restrictions on the operations that can be +performed by the appliance on the stream of packets. It may operate at all +protocol layers, terminate transport layer connections, generate new packets and +initiate transport layer connections. This function may also be used to +integrate an IPv4-only appliance into an SRv6 policy. + +The End.AD function relies on a local caching mechanism to learn and +re-encapsulate the traffic with the same headers that were removed. +This cache is used to store the IPv6 header and its +extension headers while the appliance processes the inner packet. In the +following, we refer to an entry in this cache as C(type,iface), where type is +either IPv4 or IPv6 and iface is the receiving interface on the SRv6 proxy +(IFACE-IN). |