Hi Stanislav, Situation is better now, but still only half of the problem solved :-) OSI IS-IS packets passed from network to tap, but not passed from tap to network. These are on TAP interface, where:78 is VPP-based router, :7a is non-VPP peer, both directions are seen: 13:03:22.911887 3c:ec:ef:5f:78:7a > 09:00:2b:00:00:05, 802.3, length 1500: LLC, dsap OSI (0xfe) Individual, ssap OSI (0xfe) Command, ctrl 0x03: OSI NLPID IS-IS (0x83): p2p IIH, src-id 0000.0000.0001, length 1497 13:03:23.433773 3c:ec:ef:5f:77:8f > 09:00:2b:00:00:05, 802.3, length 1500: LLC, dsap OSI (0xfe) Individual, ssap OSI (0xfe) Command, ctrl 0x03: OSI NLPID IS-IS (0x83): p2p IIH, src-id 0000.0000.0001, length 1497 , These are on opposite side of link, (Linux IS-IS router without VPP), only outgoing packets are seen: 13:08:54.796588 3c:ec:ef:5f:78:7a > 09:00:2b:00:00:05, 802.3, length 1500: LLC, dsap OSI (0xfe) Individual, ssap OSI (0xfe) Command, ctrl 0x03: OSI NLPID IS-IS (0x83): p2p IIH, src-id 0000.0000.0001, length 1497 13:08:57.662629 3c:ec:ef:5f:78:7a > 09:00:2b:00:00:05, 802.3, length 1500: LLC, dsap OSI (0xfe) Individual, ssap OSI (0xfe) Command, ctrl 0x03: OSI NLPID IS-IS (0x83): p2p IIH, src-id 0000.0000.0001, length 1497
Also, it looks like lcp auto-subint is broken ; VPP aborts on ip link add <Vlan subif> on TAP device, instead of creating subif. I'll provide back trace later on Jan 26 12:57:04 tn3 vnet[1133419]: unix_signal_handler:191: received signal SIGWINCH, PC 0x7fdd59a34f41 Jan 26 12:57:11 tn3 vnet[1133419]: received signal SIGWINCH, PC 0x7fdd59a34f41 Jan 26 12:57:11 tn3 vnet[1133419]: #0 0x00007fdd59a95c92 unix_signal_handler + 0x1f2 Jan 26 12:57:11 tn3 vnet[1133419]: #1 0x00007fdd59993420 0x7fdd59993420 Jan 26 12:57:11 tn3 vnet[1133419]: #2 0x00007fdd5a5b8f00 virtio_refill_vring_split + 0x60 Jan 26 12:57:11 tn3 vnet[1133419]: #3 0x00007fdd5a5b7f52 virtio_device_input_inline + 0x2f2 Jan 26 12:57:11 tn3 vnet[1133419]: #4 0x00007fdd5a5b7acb virtio_input_node_fn_skx + 0x19b Jan 26 12:57:11 tn3 vnet[1133419]: #5 0x00007fdd59a3515d dispatch_node + 0x33d Jan 26 12:57:11 tn3 vnet[1133419]: #6 0x00007fdd59a30c72 vlib_main_or_worker_loop + 0x632 Jan 26 12:57:11 tn3 vnet[1133419]: #7 0x00007fdd59a3277a vlib_main_loop + 0x1a Jan 26 12:57:11 tn3 vnet[1133419]: #8 0x00007fdd59a3229a vlib_main + 0x60a Jan 26 12:57:11 tn3 vnet[1133419]: #9 0x00007fdd59a94a14 thread0 + 0x44 Jan 26 12:57:11 tn3 vnet[1133419]: #10 0x00007fdd598e43d8 0x7fdd598e43d8
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