On 3/6/24 08:54, Zhangweiwei via discuss wrote:
> Hi,
>
> I set tag 0 on port tapVm72and tapVm71, and then send ping packets with vlan
> 100 from tapVm72to tapVm71. But ovs-tcpdump cannot capture any packets with
> vlan on tapVm72. It seems that vlan check is failed in mirror_packet(),
> because
> tapVm72 is an access port and the vlan packets are dropped. This is not
> reasonable
> because OVS does not use NORMAL forward. When using custom OpenFlow tables,
> mirror
> action should not consider tag configuration.
I don't think that is related to tapVm72 being an access port.
Could you, please, run ovs-appctl ofproto/trace on a packet
arriving from tapVm72 ?
Note that since mitapVm72 is not in vlan 0, mirrored traffic will
have both vlan tags pushed to the packet. For this to work the
vlan-limit configuration should be 2 or 0 (unlimited). Default
value is 1 and that may be one reason why packets are not delivered
to mitapVm72. ofproto/trace should be able to confirm if that is
the case.
Best regards, Ilya Maximets.
>
> 1、ovs version: 3.2.1
> 2、Bridge
> [root@localhost openvswitch-3.2.1]# ovs-vsctl show
> Bridge vds1-br
> Controller "tcp:172.20.66.228:6633"
> is_connected: true
> Controller "tcp:172.20.66.229:6633"
> is_connected: true
> fail_mode: secure
> datapath_type: netdev
> Port vxlan_vds1-br
> Interface vxlan_vds1-br
> type: vxlan
> options: {key=flow, local_ip="3.3.3.70", remote_ip=flow,
> tos=inherit}
> Port tapVm72
> tag: 0
> Interface tapVm72
> type: dpdkvhostuserclient
> options: {vhost-server-path="/var/run/openvswitch/tapVm72"}
> Port mitapVm72
> Interface mitapVm72
> Port tapVm71
> tag: 0
> Interface tapVm71
> type: dpdkvhostuserclient
> options: {vhost-server-path="/var/run/openvswitch/tapVm71"}
> Port vds1-br
> Interface vds1-br
> type: internal
> ovs_version: "3.2.1"
>
> 3、dpcls:
>
> [[root@localhost openvswitch-3.2.1]# ovs-appctl dpctl/dump-flows -m | grep tap
>
> ufid:21fadb70-e3c1-4a2c-a0db-a042daa051c4,
> recirc_id(0),dp_hash(0/0),skb_priority(0/0),in_port(tapVm71),skb_mark(0/0),ct_state(0/0x30),ct_zone(0/0),ct_mark(0/0),ct_label(0/0),packet_type(ns=0,id=0),eth(src=52:54:00:67:d5:61,dst=52:54:00:9a:bf:ed),eth_type(0x8100),vlan(vid=100,pcp=0/0x0),encap(eth_type(0x0800),ipv4(src=2.2.70.1,dst=2.2.70.2/255.255.192.0,proto=1,tos=0/0,ttl=64/0,frag=no),icmp(type=0/0,code=0/0)),
> packets:4388, bytes:447576, used:0.420s, dp:ovs, actions:tapVm72,
> dp-extra-info:miniflow_bits(5,2)
>
> ufid:83a55534-3c62-4415-9aa7-bd8486675c68,
> recirc_id(0),dp_hash(0/0),skb_priority(0/0),in_port(tapVm72),skb_mark(0/0),ct_state(0/0x30),ct_zone(0/0),ct_mark(0/0),ct_label(0/0),packet_type(ns=0,id=0),eth(src=52:54:00:9a:bf:ed,dst=52:54:00:67:d5:61),eth_type(0x8100),vlan(vid=100,pcp=0/0x0),encap(eth_type(0x0800),ipv4(src=2.2.70.2,dst=2.2.70.1/255.255.192.0,proto=1,tos=0/0,ttl=64/0,frag=no),icmp(type=8/0,code=0/0)),
> packets:4388, bytes:447576, used:0.420s, dp:ovs, actions:tapVm71,
> dp-extra-info:miniflow_bits(5,2)
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