Alcatel-Lucent 7450 - Redirect to SAP

Hybrid OpenFlow Switching
672 Router Configuration Guide
flow_mod:
instruction type: OFPIT_WRITE_ACTIONS or OFPIT_APPLY_ACTION,
action type: OFPAT_OUTPUT,
port= SR OS LOGICAL port encoding RSVP-TE or MPLS-TP LSP as outlined in SR OS H-
OFS Logical Port section
A received LSP in a flow rule is compared against those in the H-OFS logical port table, if
the table does not contain the LSP the rule programming fails. Otherwise, the rule is installed
in an ACL filter. As long as any path within the LSP is UP, the redirect rule will forward
unicast IP(v6) traffic on the currently used best LSP path by adding LSP transport label and,
in case of IPv6 traffic, additionally adding explicit NULL label.
When an LSP in the H-OFS logical port table goes down, the OF Switch removes the LSP
from its logical port table and may notify the controller of that fact if the logical port status
reporting is enabled. It is up to the OF controller to decide whether to remove rules using this
LSP or not. If the rules are left in the flow table, the traffic that was to be redirected to this
LSP will instead be subject to a forward action for this flow rule. If the controller does not
remove the entries and the system re-uses the LSP identified for another LSP, the rules left in
the flow table will start redirecting traffic onto this new LSP.
In some deployments, an SDN controller may need to learn from the router H-OFS logical
ports status. To support that function, the OF switch supports optional status reporting using
asynchronous OF protocol messages for ports status change.
Redirect to SAP
For traffic arriving on a VPLS interface, a router supports PBF to steer traffic over another
VPLS SAP 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:
flow_mod:
instruction type: OFPIT_WRITE_ACTIONS or OFPIT_APPLY_ACTION,
Action 1:
action type: OFPAT_OUTPUT,
port: = Encoding as outlined in SR OS H-OFS Port and VLAN Encoding section
Action 2:
action type=OFPAT_SET_FIELD
OXM TLVs encode SAP VLANs as outlined in SR OS H-OFS Port and VLAN Encoding
section:
- OXM_OF_VLAN_VID