Hi ,
I was trying the mpls using the ovs switch. I was able to push the mpls flows
to the ovs bridge. But after the mpls label is pushed, the packets are not
reaching the egress port of the bridge. I increased the mtu of the egress port
of the ovs-switch also. But still didn't worked. I was running with protocol
OpenFlow13. The flows what I added is as follows
root@WAN-Router:~# ovs-ofctl dump-flows s1 -O OpenFlow13
OFPST_FLOW reply (OF1.3) (xid=0x2):
cookie=0x0, duration=4367.855s, table=0, n_packets=4367, n_bytes=183414,
in_port=1
actions=push_mpls:0x8847,set_field:10->mpls_label,set_field:20->mpls_label,resubmit(,1)
cookie=0x0, duration=4367.855s, table=1, n_packets=4367, n_bytes=183414,
actions=output:2,NORMAL
Again running the commands to show the flows are being hit
root@WAN-Router:~# ovs-ofctl dump-flows s1 -O OpenFlow13
OFPST_FLOW reply (OF1.3) (xid=0x2):
cookie=0x0, duration=4417.770s, table=0, n_packets=4419, n_bytes=185598,
in_port=1
actions=push_mpls:0x8847,set_field:10->mpls_label,set_field:20->mpls_label,resubmit(,1)
cookie=0x0, duration=4417.770s, table=1, n_packets=4419, n_bytes=185598,
actions=output:2,NORMAL
But in the dump-ports command, it is very clear that packets are not reaching
the egress port
root@WAN-Router:~# ovs-ofctl dump-ports s1 -O OpenFlow13
OFPST_PORT reply (OF1.3) (xid=0x2): 3 ports
port LOCAL: rx pkts=0, bytes=0, drop=0, errs=0, frame=0, over=0, crc=0
tx pkts=1, bytes=42, drop=0, errs=0, coll=0
duration=9146.781s
port 1: rx pkts=9164, bytes=388672, drop=0, errs=0, frame=0, over=0, crc=0
tx pkts=44, bytes=6417, drop=0, errs=0, coll=0
duration=9146.763s
port 2: rx pkts=44, bytes=6417, drop=0, errs=0, frame=0, over=0, crc=0
tx pkts=44, bytes=6417, drop=0, errs=0, coll=0
duration=9146.758s
No change in the port 2
root@WAN-Router:~# ovs-ofctl dump-ports s1 -O OpenFlow13
OFPST_PORT reply (OF1.3) (xid=0x2): 3 ports
port LOCAL: rx pkts=0, bytes=0, drop=0, errs=0, frame=0, over=0, crc=0
tx pkts=1, bytes=42, drop=0, errs=0, coll=0
duration=9172.439s
port 1: rx pkts=9189, bytes=389722, drop=0, errs=0, frame=0, over=0, crc=0
tx pkts=44, bytes=6417, drop=0, errs=0, coll=0
duration=9172.421s
port 2: rx pkts=44, bytes=6417, drop=0, errs=0, frame=0, over=0, crc=0
tx pkts=44, bytes=6417, drop=0, errs=0, coll=0
duration=9172.416s
May I know anything more I have to do to pass the packet through egress port 2.
Also let me know the add flow command for pop_mpls , because when I added
action as pop_mpls:0x8847, it was throwing the following error.
root@WAN-Router:~# ovs-ofctl add-flow s3
in_port=2,actions=pop_mpls:0x8847,output:1 -O OpenFlow13
ovs-ofctl: none of the usable flow formats (OpenFlow10,NXM) is among the
allowed flow formats (OXM-OpenFlow13)
I am using the 2.3.1 version of ovs
Thanks and Regards,
Prince Pereira
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