Hi,
I came across this thread:
"[ovs-dev] OVN based distributed virtual routing for VLAN backed networks"
In which *Mark Michelson *suggested it was possible to add a tag to a
localnet port as follows:
*
Essentially, you can do the following:
1) On a logical switch, create a logical switch port of type "localnet"
and set its addresses to "unknown".
2) On the localnet port, set options:network_name to a network name.
3) On the localnet port, set tag_request to the VLAN identifier you want
to use.
4) On the hypervisor where ovn-controller runs, create the br-pif bridge.
5) On the hypervisor where ovn-controller runs, in the Open_vSwitch
table's record, set external-ids:ovn-bridge-mappings =
<network_name>:br-pif. "network_name" in this case is the network_name
you set on the localnet port in step 2.
With this setup, ovn-controller will automatically create the patch
ports between br-int and br-pif, and will use the VLAN tag from the
localnet port for two purposes:
1) On traffic sent out of br-int over the patch port, the tag will be
added to the packet.
2) On traffic received from the patch port into br-int, the VLAN tag
must match the configured VLAN tag on the localnet port. If it matches,
the tag is stripped.
The only aspect of the above I'm not 100% sure about is the logical
switch ingress and egress pipelines being run on both source and
destination hypervisor. But I *think* that's how it works in this case.
*My question is what do you set the parent port to? from ovn-nbctl man
page:*
[--may-exist] lsp-add switch port parent tag_request
Creates on switch a logical switch port named port that is a child of
parent that is iden‐
tified with VLAN ID tag_request,
**
*If I have a configuration shown below where***ln-ls_vcn3_external_stgw
*is the localnet port
If I want to add a VLAN tag of 3901 what is the command to create this
port ?
*
*
ovn-nbctl lsp-add ls_vcn3_external_stgw **ln-ls_vcn3_external_stgw*<what
parent?>* 3901
Thanks
Brendan
+------------------+
| VM |
| 192.16.1.6 |
+------------------+
| 284195d2-9280-4334-900e-571ecd00327a
+---------------------+
| ls_vcn3_net1 |
+---------------------+
| ls_vcn3_net1-lr_vcn3_net1
|
| lr_vcn3_net1-ls_vcn3_net1
/----------------\
( lr_vcn3_net1 )
\----------------/
| lr_vcn3_net1-lsb_vcn3_net1
|
| lsb_vcn3_net1-lr_vcn3_net1
+-----------------------------+
| ls_vcn3_backbone |
+-----------------------------+
| lsb_vcn4_stgw-lr_vcn3_stgw**
|
| lr_vcn3_stgw-lsb_vcn3_stgw
/-----------------\
( lr_vcn3_stgw )
\-----------------/
| lr_vcn3_stgw-ls_vcn3_external_stgw
|
| ls_vcn3_external_stgw-lr_vcn3_stgw
+-------------------------------+
| ls_vcn3_external_stgw |
+-------------------------------+
| ln-ls_vcn3_external_stgw (localnet)
+---------+
| br-ext | Physical OVS on chassis
+----------+
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