Hi John,
UCS-B's drivers apparently send vlan 0 in native vlan. I'm just pointing out
that vpp treats vlan id 0 as a vlan when vlan 0 means it's not a vlan (if I
understand the IEEE Std 802.1Q correctly). Or am I missing something?
Thanks,
Juraj
From: John Lo (loj)
Sent: Thursday, 25 May, 2017 16:12
To: Juraj Linkes -X (jlinkes - PANTHEON TECHNOLOGIES at Cisco)
<jlin...@cisco.com>; vpp-dev@lists.fd.io
Cc: Tomas Cechvala -X (tcechval - PANTHEON TECHNOLOGIES at Cisco)
<tcech...@cisco.com>; fds-...@lists.opnfv.org
Subject: RE: Does VPP support vlan 0?
Hi Juraj,
For an interface in L3 mode, any packet received with a VLAN tag must match a
sub-interface setup to expect that VLAN tag value. A way to handle this may be
to create a sub-interface matching VLAN 0, such as:
DBGvpp# create sub tuntap-0 0
tuntap-0.0
DBGvpp# sho int
Name Idx State Counter Count
GigabitEthernet1b/0/0 3 up rx packets
44630
rx bytes
4528252
tx packets
3105
tx bytes
480292
drops
20672
punts
373
ip4
23551
GigabitEthernet4/0/0 2 up rx packets
3070
rx bytes
325990
tx packets
23549
tx bytes
2085942
drops
16
local0 0 down
tuntap-0 1 up tx packets
373
tx bytes
17158
tuntap-0.0 5 down
vxlan_tunnel0 4 up rx packets
23549
rx bytes
2085942
tx packets
3068
tx bytes
436318
DBGvpp# set int state tuntap-0.0 up
I have not tried this kind of setup before and do not know if other config may
be necessary to get this going. One question I do have is why are you receiving
a packet with VLAN tag 0 in your tap interface?
Hopefully this may work for you,
John
From: vpp-dev-boun...@lists.fd.io<mailto:vpp-dev-boun...@lists.fd.io>
[mailto:vpp-dev-boun...@lists.fd.io] On Behalf Of Juraj Linkes -X (jlinkes -
PANTHEON TECHNOLOGIES at Cisco)
Sent: Thursday, May 25, 2017 4:19 AM
To: vpp-dev@lists.fd.io<mailto:vpp-dev@lists.fd.io>
Cc: Tomas Cechvala -X (tcechval - PANTHEON TECHNOLOGIES at Cisco)
<tcech...@cisco.com<mailto:tcech...@cisco.com>>;
fds-...@lists.opnfv.org<mailto:fds-...@lists.opnfv.org>
Subject: Re: [vpp-dev] Does VPP support vlan 0?
Hello vpp-devs,
Has anyone looked at this?
Thanks,
Juraj
From: Juraj Linkes -X (jlinkes - PANTHEON TECHNOLOGIES at Cisco)
Sent: Tuesday, 23 May, 2017 15:47
To: vpp-dev@lists.fd.io<mailto:vpp-dev@lists.fd.io>
Cc: fds-...@lists.opnfv.org<mailto:fds-...@lists.opnfv.org>; Frank Brockners
(fbrockne) <fbroc...@cisco.com<mailto:fbroc...@cisco.com>>; Tomas Cechvala -X
(tcechval - PANTHEON TECHNOLOGIES at Cisco)
<tcech...@cisco.com<mailto:tcech...@cisco.com>>; Michal Cmarada -X (mcmarada -
PANTHEON TECHNOLOGIES at Cisco) <mcmar...@cisco.com<mailto:mcmar...@cisco.com>>
Subject: Does VPP support vlan 0?
Hi vpp-devs,
I'm hitting an issue when VLAN ID is 0:
03:20:01:825468: tapcli-rx
tap-0
03:20:01:825472: ethernet-input
IP4: 00:25:b5:00:01:4a -> 01:00:5e:00:00:12 802.1q vlan 0
03:20:01:825473: error-drop
ethernet-input: unknown vlan
As I understand it, the device should treat packets with VLAN 0 as if it didn't
have an ID:
The null VLAN ID. Indicates that the tag header contains only priority
information; no VLAN identifier is present in the frame.
I'm trying this with 1704. Does VPP support this? Is there a workaround, like
stripping the 802.1q header for tap ports?
Thanks,
Juraj
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