[ovs-discuss] problem with multiple pop_mpls

Adel Belkhiri adel.belkhiri at gmail.com
Wed Nov 13 17:46:26 UTC 2019


Hi All,

I have an issue with popping multiple mpls headers with ovs. The pushing
via push_mpls works fine but the popping via pop_mpls triggers a warning in
the log and the operation is not accomplished.

|WARN|system at ovs-system: execute pop_mpls(eth_type=0x8847),pop_mpls
(eth_type=0x800),2 failed (Invalid argument) on packet
mpls,vlan_tci=0x0000,
dl_src=ba:bd:0d:9d:c5:ee,dl_dst=ea:f5:19:d4:e2:4f,mpls_label=15,mpls_tc=0,mpls_ttl=64,mpls_bos=0,mpls_lse1=45376
with
metadata skb_priority(0),skb_mark(0), in_port(1) mtu 0

I'm using the last version of OVS : 2.12.90. My OpenFlow rules are the
following :

sudo ovs-ofctl add-flow $S1
"table=0,in_port=$S1_ETH2,eth_type=0x8847,mpls_bos=1,actions=pop_mpls:0x8847,resubmit(,0)"
sudo ovs-ofctl add-flow $S1
"table=0,in_port=$S1_ETH2,eth_type=0x8847,mpls_bos=0,actions=pop_mpls:0x800,output:$S1_ETH1"


Any hint how to solve this?

Many thanks.
Adele.
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