ipip.api File Reference

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Data Structures
struct	vl_api_ipip_add_tunnel_t
	Create an IP{v4,v6} over IP{v4,v6} tunnel. More...
struct	vl_api_ipip_add_tunnel_reply_t
struct	vl_api_ipip_del_tunnel_t
	Delete an IP{v4,v6} over IP{v4,v6} tunnel. More...
struct	vl_api_ipip_6rd_add_tunnel_t
	Create an IPv4 over IPv6 automatic tunnel (6RD) More...
struct	vl_api_ipip_6rd_add_tunnel_reply_t
struct	vl_api_ipip_6rd_del_tunnel_t
	Delete an IPv4 over IPv6 automatic tunnel (6RD) More...
struct	vl_api_ipip_tunnel_dump_t
	List all IPIP tunnels. More...
struct	vl_api_ipip_tunnel_details_t

Variables
option	version = "1.1.0"
	The IPIP module implements IP{v4,v6} over IP{v4,v6} tunnelling as described in RFC2473 and to some extent the largely historical RFC1853. More...

Variable Documentation

option version = "1.1.0"

The IPIP module implements IP{v4,v6} over IP{v4,v6} tunnelling as described in RFC2473 and to some extent the largely historical RFC1853.

The module also supports an IPv4 over IPv6 automatic tunnelling mechanism called 6RD (RFC5969).

The IPIP API module supports a CRD model for adding, deleting and listing tunnels. A tunnel is represented as an interface in VPP. The "handle" representing a tunnel is the sw_if_index. As any interface, the user must configure an IPv4 and/or IPv6 address on the interface. This is the inner or payload protocol.

Tunnel MTU: The tunnel MTU (the payload MTU) is configurable per protocol. If a tunnel MTU is larger than the path MTU, the outer packet will be fragmented. Fragmentation support is configurable, as it can have severe performance issues, and might be used as an attack vector (the remote side must reassemble.)

Traffic class / TOS field can either be configured to a fixed value, or can be copied from the inner to the outer header. (For now we have stolen ~0 to indicate copy).

Note:

• The Tunnel encapsulation limit described in RFC2473 is not implemented.
• ICMP proxying, as in a tunnel head-end receiving ICMP erors on the outer packet is currently not relayed to the original source of the packet.
• PMTUD / MTU probing and tunnel keepalives are not yet implemented.

Definition at line 51 of file ipip.api.