Deployment Guide

40
4.4.7.2 Action Buckets
The single action bucket specifies the MAC_SRC, VLAN_VID, TTL decrement action, and an output group for
forwarding the packet. All actions are required.
Table 62: DNOS-OF L3 Interface Group Entry Bucket Actions
Field
Argument
Description
Group
Group entry
Must chain to a L2 Interface group entry. This group entry can output
the packet to IN_PORT. The VLAN id component of the chained
group entry’s name must match the Set Field value for VLAN id.
Set
Field
MAC_SRC
Write the source MAC corresponding to the L3 output interface.
Set
Field
VLAN-id
Write the VLAN id corresponding to the L3 output interface.
Referenced group entries must be defined before being used. DNOS-OF maintains reference counts for
used entries, and an entry cannot be deleted if it is referenced by a flow entry or another group.
4.4.7.3 Counters
DNOS-OF L3 Interface group entry counters are as shown in Table 63 for completeness.
4.4.8 DNOS-OF L3 Multicast Group Entries
DNOS-OF L3 Multicast group entries are of OpenFlow all type. The action buckets describe the interfaces to
which multicast packet replicas are forwarded.
IP multicast packets are forwarded differently, depending on whether they are switched or routed. Packets
must be switched in the VLAN in which they came in and cannot be output to IN_PORT. Packets that are
multicast in other VLANs must be routed and must be allowed to egress via IN_PORT. This difference is
reflected in the actions that are programmed in the action buckets.
Note that any chained DNOS-OF L2 Interface Group entries must be in the same VLAN as the DNOS-OF
L3 Multicast group entry. However chained DNOS-OF L3 Interface Group entries must be in different
VLANs from the DNOS-OF L3 Multicast Group entry, and from each other.