Hybrid OpenFlow Switch
Router Configuration Guide 673
- OFL_OUT_VLAN_ID (optional)
Redirect to SDP
For traffic arriving on a VPLS interface, a router supports PBF to steer traffic over a VPLS
SDP in the same service. An OF controller can rely on this functionality and program PBF
steering action for H-OFS instances with switched-defined-cookie enabled using the
following OF encoding:
ALU_IPD_EXPERIMENTER_ID: 0x000025BA
ALU_AXN_REDIRECT_TO_SDP: 1
flow_mod:
instruction= OFPIT_WRITE_ACTIONS/OFPIT_APPLY_ACTIONS,
action= OFPAT_EXPERIMENTER(ALU_AXN_REDIRECT_TO_SDP),
encoding:
struct alu_axn_redirect_to_sdp{
uint16_t type; /* OFPAT_EXPERIMENTER. */
uint16_t len; /* Total Length is a multiple of 8. */
uint32_t experimenter; /* Experimenter ID vendor unique*/
uint8_t redirect_type; /* Type = 0 for SDP*/
uint8_t flags; /* Flags that can be used to denote info(reserved)*/
uint16_t sdp-id; /* Sdp-id*/
uint32_t vcId; /* Vc-id*/
unit8_t pad[0]; /* Not needed */
}; ASSERT(sizeof(alu_axn_redirect_to_sdp) == 16)
In case of erroneous programming, the following experimenter-specific errors are returned to
the controller:
enum alu_err_exp_class
{
ALU_ERR_CLASS_RD_TO_SDP = 0,
ALU_ERR_CLASS_RD_TO_NHOP = 1,
}
enum alu_err_redirect_to_sdp
{
ALU_ERR_RS_INVALID_FLAGS = 0
ALU_ERR_RS_INVALID_ARGS = 1
ALU_ERR_RS_INVALID_SDP_ID = 2
ALU_ERR_RS_INVALID_VC_ID = 3
}
Forward action
An OF controller can program forward action, when a specific flow is to be forwarded using
regular router forwarding. This would be a default behavior if the filter-policy embedding this
OF switch instance has a default-action forward and no filter policy rule matches the flow.
To implement forward action, the following OF encoding is used:
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