Support for VLAN Sub-interface

[open-switch]

Support for VLAN Sub-interface

[atanu-mandal]

The VLAN sub interface type(i.e. vlanSubInterface) is not handled in current OPX 2.2.0 code base and the functionality is being developed in-house (would be part of later OPX main release).

Given that, we should be able to handle the requirement to add/query tagged interfaces to a VLAN.

Configuring tagged ports through Linux utilities

root@OPX:# brctl addbr br200
root@OPX:# ip addr flush dev e101-020-0
root@OPX:# ip link add link e101-020-0 name e101-020-0.200 type vlan id 200
root@OPX:# brctl addif br200 e101-020-0.200

root@OPX:~# brctl show
bridge name bridge id STP enabled interfaces
br200 8000.90b11cf49d23 no e101-020-0.200

root@OPX:~# cps_get_oid.py dell-base-if-cmn/if/interfaces/interface | grep 020
dell-if/if/interfaces/interface/tagged-ports = e101-020-0
if/interfaces/interface/name = e101-020-0

root@OPX:~# opx-switch-shell "vlan show"
vlan 1 ports none (0x0000000000000000000000000000000000000000000000000000000000000000), untagged none (0x0000000000000000000000000000000000000000000000000000000000000000) MCAST_FLOOD_UNKNOWN
vlan 200 ports xe64 (0x0000000000000000000000000000000000000000000000020000000000000000), untagged none (0x0000000000000000000000000000000000000000000000000000000000000000) MCAST_FLOOD_UNKNOWN
vlan 4095 ports xe (0x00000000000000000000000000000000000001fffffffffffffffffffffffffe), untagged xe (0x00000000000000000000000000000000000001fffffffffffffffffffffffffe) MCAST_FLOOD_UNKNOWN

root@OPX:~# cps_config_vlan.py --show
Key: 1.19.44.2883617.2883612.2883613.
dell-base-if-cmn/if/interfaces/interface/if-index = 38
dell-if/if/interfaces/interface/phys-address = 90:b1:1c:f4:9d:23
base-if-vlan/if/interfaces/interface/id = 200
if/interfaces/interface/name = br200
dell-if/if/interfaces/interface/vlan-type = 0
dell-if/if/interfaces/interface/learning-mode = 1
dell-if/if/interfaces/interface/mtu = 1532
if/interfaces/interface/enabled = 0
dell-if/if/interfaces/interface/tagged-ports = e101-020-0

Configuring tagged ports through CPS utilities

root@OPX:~# cps_config_vlan.py --add --id 100 --vlantype 1 --port e101-001-0 --t
Success

root@OPX:~# brctl show
bridge name bridge id STP enabled interfaces
br100 8000.90b11cf49d23 no e101-001-0.100

root@OPX:~# cps_get_oid.py dell-base-if-cmn/if/interfaces/interface | grep 001
dell-if/if/interfaces/interface/tagged-ports = e101-001-0
if/interfaces/interface/name = e101-001-0

root@OPX:~# opx-switch-shell -c "vlan show"

vlan 1 ports none (0x0000000000000000000000000000000000000000000000000000000000000000), untagged none (0x0000000000000000000000000000000000000000000000000000000000000000) MCAST_FLOOD_UNKNOWN
vlan 100 ports xe0 (0x0000000000000000000000000000000000000000000000000000000000000002), untagged none (0x0000000000000000000000000000000000000000000000000000000000000000) MCAST_FLOOD_UNKNOWN
vlan 4095 ports xe (0x00000000000000000000000000000000000001fffffffffffffffffffffffffe), untagged xe (0x00000000000000000000000000000000000001fffffffffffffffffffffffffe) MCAST_FLOOD_UNKNOWN

root@OPX:~# cps_config_vlan.py --show
Key: 1.19.44.2883617.2883612.2883613.
dell-base-if-cmn/if/interfaces/interface/if-index = 36
dell-if/if/interfaces/interface/phys-address = 90:b1:1c:f4:9d:23
base-if-vlan/if/interfaces/interface/id = 100
if/interfaces/interface/name = br100
dell-if/if/interfaces/interface/vlan-type = 1
dell-if/if/interfaces/interface/learning-mode = 1
dell-if/if/interfaces/interface/mtu = 1532
if/interfaces/interface/enabled = 0
dell-if/if/interfaces/interface/tagged-ports = e101-001-0

Please let me know for any clarification

Thanks,
-Atanu

[james-jra]

Ah, so you don't need to create a VLAN subinterface before assigning it as a tagged port - it's explicitly created when you add the interface as a tagged port on the VLAN.
We just don't have control of the VLAN subinterface itself via CPS, but will at some future point.

I understand, that's very helpful,

thank you.
James

[atanu-mandal]

Sure James. Thanks. I am going to close this issue.