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blacksnow
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Inter-VLAN Routing Within Bridge

Wed Feb 15, 2023 4:54 pm

So I'm using the CCR2216-1G-12XS-2XQ and I've setup vlans on a single bridge interface as documented. I have L3HW offload working but it only works in some directions and I just want to make sure this is expected functionality.

Router Version: 7.8rc1

Topology:

Single bridge
VLAN 3999 = WAN (On SFP28-12) (bridge and sfp28-12 are tagged)
VLAN 1-7 = LAN (On SFP28-5) (bridge and sfp28-5 are tagged)
SFP28-1 = LAN network with a server/workstation.

Current Functionality:
Going from SFP28-1 to the WAN or LAN on sfp28-12 or sfp28-5 is HW offloaded as expected. Bi-Directional.
Going from SFP28-5 (any VLAN) to SFP28-12 (WAN) is not offloaded.


So essentially, when the packet originates from a vlan that is coming through an interface that is on the bridge and is leaving through another interface on the bridge which is a different VLAN, it is not offloaded. If the packet originates from the a vlan on the bridge and goes to some other interface not on the bridge then it is offloaded and vice versa in terms of direction, for example sfp28-1 which is not on the bridge to any vlan on the bridge is offload. Is this expected?

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