OpenFlow Tap Aggregation Part 2 : Multiple Source / Destinations

In the last post, we covered configuring a Pica8 3922 as a One-to-Many port replicator.

For this post, we will not repeat the initial setup steps, just the extra details.

Here is a design where we take four ports and bridge them and then mirror the resulting traffic out four more ports.

# Add Bridge br20 - for TAP Span - 1st Port
#######################################################################################
# Bridged : te-1/1/21, te-1/1/22, te-1/1/23, te-1/1/24
# Output : te-1/1/25, te-1/1/26, te-1/1/27, te-1/1/28
#-------------------------------------------------------------------------------------
$VSCTL add-br br20 -- set bridge br20 datapath_type=pica8 other-config=datapath-id=120
$VSCTL add-port br20 te-1/1/21 -- set interface te-1/1/21 type=pica8
$VSCTL add-port br20 te-1/1/22 -- set interface te-1/1/22 type=pica8
$VSCTL add-port br20 te-1/1/23 -- set interface te-1/1/23 type=pica8
$VSCTL add-port br20 te-1/1/24 -- set interface te-1/1/24 type=pica8
$VSCTL add-port br20 te-1/1/25 -- set interface te-1/1/25 type=pica8
$VSCTL add-port br20 te-1/1/26 -- set interface te-1/1/26 type=pica8
$VSCTL add-port br20 te-1/1/27 -- set interface te-1/1/27 type=pica8
$VSCTL add-port br20 te-1/1/28 -- set interface te-1/1/28 type=pica8
# Remove Default Flow (not treating this as HUB!)
ovs-ofctl del-flows br20
# Add replication flow from each bridged port to each of the other ports in the group
ovs-ofctl add-flow br20 in_port=21,dl_dst="*",dl_src="*",dl_type="*",dl_vlan_pcp="*",dl_vlan="*",actions=output:22,23,24,25,26,27,28
ovs-ofctl add-flow br20 in_port=22,dl_dst="*",dl_src="*",dl_type="*",dl_vlan_pcp="*",dl_vlan="*",actions=output:21,23,24,25,26,27,28
ovs-ofctl add-flow br20 in_port=23,dl_dst="*",dl_src="*",dl_type="*",dl_vlan_pcp="*",dl_vlan="*",actions=output:21,22,24,25,26,27,28
ovs-ofctl add-flow br20 in_port=24,dl_dst="*",dl_src="*",dl_type="*",dl_vlan_pcp="*",dl_vlan="*",actions=output:21,22,23,25,26,27,28
# Drop ingress traffic from mirror ports
ovs-ofctl add-flow br20 in_port=25,dl_dst="*",dl_src="*",dl_type="*",dl_vlan_pcp="*",dl_vlan="*",actions=drop
ovs-ofctl add-flow br20 in_port=26,dl_dst="*",dl_src="*",dl_type="*",dl_vlan_pcp="*",dl_vlan="*",actions=drop
ovs-ofctl add-flow br20 in_port=27,dl_dst="*",dl_src="*",dl_type="*",dl_vlan_pcp="*",dl_vlan="*",actions=drop
ovs-ofctl add-flow br20 in_port=28,dl_dst="*",dl_src="*",dl_type="*",dl_vlan_pcp="*",dl_vlan="*",actions=drop