Hi Xyxue, You need to create the default MPLS table before you enable an interface for MPLS.
So in your sequence this command: set interface mpls host-eth1 enable should have returned an error. I’ve patched with https://gerrit.fd.io/r/#/c/9519/ so now one gets; DBGvpp# set int mpls loop0 enable set interface mpls: default MPLS table must be created first please edit your config sequence with mpls table add 0 I expect you also want to add your MPLS local-labels to the default MSPL table rather than you the MPLS table 1 that you create. Since the lookup for the MPS table will occur in the default table, as that is the table that all interfaces are bound to. Regards, neale From: <vpp-dev-boun...@lists.fd.io> on behalf of 薛欣颖 <xy...@fiberhome.com> Date: Wednesday, 22 November 2017 at 01:55 To: vpp-dev <vpp-dev@lists.fd.io> Subject: [vpp-dev] MPLS LABEL problem Hi guys, My vpp version :18.01. vpp1-----vpp2 When the flows out of vpp1, it has two layers of tags. The flow was dropped in vpp2. And the error information:MPLS not enabled. Is there anything wrong in my configuration on vpp2? Has the configuration in 18.01 changed? ######## ######## ######## ######## ####vpp1 create host-interface name eth2 mac 00:0c:29:6d:b0:82 create host-interface name eth1 mac 00:0c:29:6d:b0:78 set interface ip table host-eth2 1 set interface ip address host-eth2 1.1.1.1/24 set interface ip address host-eth1 2.1.1.1/24 set interface state host-eth2 up set interface state host-eth1 up set interface mpls host-eth1 enable create mpls tunnel out-label 33 out-label 34 via 2.1.1.2 host-eth1 set interface state mpls-tunnel0 up mpls table add 1 ip route add 3.1.1.0/24 via ip4-address 2.1.1.2 interface mpls-tunnel0 table 1 mpls local-label add eos 1023 table 1 ip4-lookup-in-table 1 mpls local-label add non-eos 1023 table 1 mpls-lookup-in-table 1 ######## ######## ######## ######## ####vpp2 create host-interface name eth2 mac 2c:53:4a:03:93:31 create host-interface name eth1 mac 2c:53:4a:03:94:59 set interface ip table host-eth2 1 set interface ip address host-eth1 2.1.1.2/24 set interface ip address host-eth2 3.1.1.1/24 set interface state host-eth2 up set interface state host-eth1 up set interface mpls host-eth1 enable create mpls tunnel out-label 1023 out-label 1024 via 2.1.1.1 host-eth1 set interface state mpls-tunnel0 up mpls table add 1 ip route add 1.1.1.0/24 via ip4-address 2.1.1.1 interface mpls-tunnel0 table 1 mpls local-label add eos 34 table 1 ip4-lookup-in-table 1 mpls local-label add non-eos 33 table 1 mpls-lookup-in-table 1 the vpp2 error information is shown below: VPP# show errors Count Node Reason 4889 mpls-input MPLS input packets decapsulated 4889 mpls-input MPLS not enabled 31 ip4-input valid ip4 packets 103 ethernet-input no error 2 arp-input ARP replies sent 1 arp-input ARP request IP4 source address learned VPP# show trace ------------------- Start of thread 0 vpp_main ------------------- Packet 1 00:11:22:232258: af-packet-input af_packet: hw_if_index 2 next-index 4 tpacket2_hdr: status 0x1 len 132 snaplen 132 mac 66 net 80 sec 0x5a141690 nsec 0x3162f619 vlan 0 00:11:22:232280: ethernet-input MPLS: 00:0c:29:6d:b0:78 -> 2c:53:4a:03:94:59 00:11:22:232332: mpls-input MPLS: next BUG![2] label 33 ttl 255 00:11:22:232342: error-drop mpls-input: MPLS not enabled Thanks, xyxue ________________________________
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