Hi Damjan,

Please find the trace on both side

vpp1 (10.1.1.1) ---- (10.1.1.2) vpp2

DBGvpp# ping 10.1.1.2
116 bytes from 10.1.1.2: icmp_seq=1 ttl=64 time=31.8174 ms
116 bytes from 10.1.1.2: icmp_seq=2 ttl=64 time=47.9716 ms
116 bytes from 10.1.1.2: icmp_seq=3 ttl=64 time=40.0259 ms
116 bytes from 10.1.1.2: icmp_seq=4 ttl=64 time=19.9210 ms
116 bytes from 10.1.1.2: icmp_seq=5 ttl=64 time=39.9568 ms

Statistics: 5 sent, 5 received, 0% packet loss


VPP1:
******

Packet 3

01:35:02:872114: memif-input
  memif: hw_if_index 1 next-index 4
    slot: ring 0
01:35:02:872132: ethernet-input
  frame: flags 0x1, hw-if-index 1, sw-if-index 1
  IP4: 02:dc:5c:30:00:00 -> 02:dc:5c:30:00:00
01:35:02:872142: ip4-input
  ICMP: 10.1.1.2 -> 10.1.1.1
    tos 0x00, ttl 64, length 96, checksum 0x36e4
    fragment id 0x2db5
  ICMP echo_reply checksum 0xf86f
01:35:02:872153: ip4-lookup
  fib 0 dpo-idx 8 flow hash: 0x00000000
  ICMP: 10.1.1.2 -> 10.1.1.1
    tos 0x00, ttl 64, length 96, checksum 0x36e4
    fragment id 0x2db5
  ICMP echo_reply checksum 0xf86f
01:35:02:872206: ip4-local
    ICMP: 10.1.1.2 -> 10.1.1.1
      tos 0x00, ttl 64, length 96, checksum 0x36e4
      fragment id 0x2db5
    ICMP echo_reply checksum 0xf86f
01:35:02:872215: ip4-icmp-input
  ICMP: 10.1.1.2 -> 10.1.1.1
    tos 0x00, ttl 64, length 96, checksum 0x36e4
    fragment id 0x2db5
  ICMP echo_reply checksum 0xf86f
01:35:02:872224: ip4-icmp-echo-reply
  ICMP4 echo id 50293 seq 1 send to cli node 620

Packet 4

01:35:02:872114: memif-input
  memif: hw_if_index 1 next-index 4
    slot: ring 0
01:35:02:872132: ethernet-input
  frame: flags 0x1, hw-if-index 1, sw-if-index 1
  ARP: 02:dc:5c:30:00:00 -> ff:ff:ff:ff:ff:ff
01:35:02:872150: arp-input
  request, type ethernet/IP4, address size 6/4
  02:dc:5c:30:00:00/10.1.1.2 -> 00:00:00:00:00:00/10.1.1.1
01:35:02:872163: arp-reply
  request, type ethernet/IP4, address size 6/4
  02:dc:5c:30:00:00/10.1.1.2 -> 00:00:00:00:00:00/10.1.1.1
01:35:02:872219: memif11/11-output
  memif11/11 l2_hdr_offset_valid l3_hdr_offset_valid
  ARP: 02:dc:5c:30:00:00 -> 02:dc:5c:30:00:00
  reply, type ethernet/IP4, address size 6/4
  02:dc:5c:30:00:00/10.1.1.1 -> 02:dc:5c:30:00:00/10.1.1.2

Packet 5

01:35:03:136170: memif-input
  memif: hw_if_index 1 next-index 4
    slot: ring 0
01:35:03:136186: ethernet-input
  frame: flags 0x1, hw-if-index 1, sw-if-index 1
  IP6: 02:dc:5c:30:00:00 -> 33:33:00:00:00:01
01:35:03:136195: ip6-input
  ICMP6: fe80::dc:5cff:fe30:0 -> ff02::1
    tos 0x00, flow label 0x0, hop limit 255, payload length 32
  ICMP router_advertisement checksum 0x57bf
01:35:03:136201: ip6-mfib-forward-lookup
  fib 0 entry 4
01:35:03:136209: ip6-mfib-forward-rpf
  entry 4 itf 1 flags Accept,
01:35:03:136212: ip6-replicate
  replicate: 2 via [@1]: dpo-receive
01:35:03:136217: ip6-local
    ICMP6: fe80::dc:5cff:fe30:0 -> ff02::1
      tos 0x00, flow label 0x0, hop limit 255, payload length 32
    ICMP router_advertisement checksum 0x57bf
01:35:03:136225: ip6-icmp-input
  ICMP6: fe80::dc:5cff:fe30:0 -> ff02::1
    tos 0x00, flow label 0x0, hop limit 255, payload length 32
  ICMP router_advertisement checksum 0x57bf
01:35:03:136228: icmp6-router-advertisement
  ICMP6: fe80::dc:5cff:fe30:0 -> ff02::1
    tos 0x00, flow label 0x0, hop limit 255, payload length 32
  ICMP router_advertisement checksum 0x57bf
01:35:03:136237: ip6-drop
    ICMP6: fe80::dc:5cff:fe30:0 -> ff02::1
      tos 0x00, flow label 0x0, hop limit 255, payload length 32
    ICMP router_advertisement checksum 0x57bf
01:35:03:136242: error-drop
  rx:memif11/11
01:35:03:136246: drop
  ip6-icmp-input: valid packets

Packet 6

01:35:03:860055: memif-input
  memif: hw_if_index 1 next-index 4
    slot: ring 0
01:35:03:880103: ethernet-input
  frame: flags 0x1, hw-if-index 1, sw-if-index 1
  IP4: 02:dc:5c:30:00:00 -> 02:dc:5c:30:00:00
01:35:03:880114: ip4-input
  ICMP: 10.1.1.2 -> 10.1.1.1
    tos 0x00, ttl 64, length 96, checksum 0xb43f
    fragment id 0xb059
  ICMP echo_reply checksum 0x3092
01:35:03:880124: ip4-lookup
  fib 0 dpo-idx 8 flow hash: 0x00000000
  ICMP: 10.1.1.2 -> 10.1.1.1
    tos 0x00, ttl 64, length 96, checksum 0xb43f
    fragment id 0xb059
  ICMP echo_reply checksum 0x3092
01:35:03:880178: ip4-local
    ICMP: 10.1.1.2 -> 10.1.1.1
      tos 0x00, ttl 64, length 96, checksum 0xb43f
      fragment id 0xb059
    ICMP echo_reply checksum 0x3092
01:35:03:880185: ip4-icmp-input
  ICMP: 10.1.1.2 -> 10.1.1.1
    tos 0x00, ttl 64, length 96, checksum 0xb43f
    fragment id 0xb059
  ICMP echo_reply checksum 0x3092
01:35:03:880192: ip4-icmp-echo-reply
  ICMP4 echo id 50293 seq 2 send to cli node 620

Packet 7

01:35:03:860055: memif-input
  memif: hw_if_index 1 next-index 4
    slot: ring 0
01:35:03:880103: ethernet-input
  frame: flags 0x1, hw-if-index 1, sw-if-index 1
  ARP: 02:dc:5c:30:00:00 -> ff:ff:ff:ff:ff:ff
01:35:03:880120: arp-input
  request, type ethernet/IP4, address size 6/4
  02:dc:5c:30:00:00/10.1.1.2 -> 00:00:00:00:00:00/10.1.1.1
01:35:03:880130: arp-reply
  request, type ethernet/IP4, address size 6/4
  02:dc:5c:30:00:00/10.1.1.2 -> 00:00:00:00:00:00/10.1.1.1
01:35:03:880187: memif11/11-output
  memif11/11 l2_hdr_offset_valid l3_hdr_offset_valid
  ARP: 02:dc:5c:30:00:00 -> 02:dc:5c:30:00:00
  reply, type ethernet/IP4, address size 6/4
  02:dc:5c:30:00:00/10.1.1.1 -> 02:dc:5c:30:00:00/10.1.1.2

Packet 8

01:35:04:877964: memif-input
  memif: hw_if_index 1 next-index 4
    slot: ring 0
01:35:04:877984: ethernet-input
  frame: flags 0x1, hw-if-index 1, sw-if-index 1
  IP4: 02:dc:5c:30:00:00 -> 02:dc:5c:30:00:00
01:35:04:877995: ip4-input
  ICMP: 10.1.1.2 -> 10.1.1.1
    tos 0x00, ttl 64, length 96, checksum 0xc71b
    fragment id 0x9d7d
  ICMP echo_reply checksum 0x6684
01:35:04:878002: ip4-lookup
  fib 0 dpo-idx 8 flow hash: 0x00000000
  ICMP: 10.1.1.2 -> 10.1.1.1
    tos 0x00, ttl 64, length 96, checksum 0xc71b
    fragment id 0x9d7d
  ICMP echo_reply checksum 0x6684
01:35:04:878011: ip4-local
    ICMP: 10.1.1.2 -> 10.1.1.1
      tos 0x00, ttl 64, length 96, checksum 0xc71b
      fragment id 0x9d7d
    ICMP echo_reply checksum 0x6684
01:35:04:878015: ip4-icmp-input
  ICMP: 10.1.1.2 -> 10.1.1.1
    tos 0x00, ttl 64, length 96, checksum 0xc71b
    fragment id 0x9d7d
  ICMP echo_reply checksum 0x6684
01:35:04:878018: ip4-icmp-echo-reply
  ICMP4 echo id 50293 seq 3 send to cli node 620

Packet 9

01:35:04:896207: memif-input
  memif: hw_if_index 1 next-index 4
    slot: ring 0
01:35:04:896223: ethernet-input
  frame: flags 0x1, hw-if-index 1, sw-if-index 1
  ARP: 02:dc:5c:30:00:00 -> ff:ff:ff:ff:ff:ff
01:35:04:896233: arp-input
  request, type ethernet/IP4, address size 6/4
  02:dc:5c:30:00:00/10.1.1.2 -> 00:00:00:00:00:00/10.1.1.1
01:35:04:896239: arp-reply
  request, type ethernet/IP4, address size 6/4
  02:dc:5c:30:00:00/10.1.1.2 -> 00:00:00:00:00:00/10.1.1.1
01:35:04:896341: memif11/11-output
  memif11/11 l2_hdr_offset_valid l3_hdr_offset_valid
  ARP: 02:dc:5c:30:00:00 -> 02:dc:5c:30:00:00
  reply, type ethernet/IP4, address size 6/4
  02:dc:5c:30:00:00/10.1.1.1 -> 02:dc:5c:30:00:00/10.1.1.2

Packet 10

01:35:05:912057: memif-input
  memif: hw_if_index 1 next-index 4
    slot: ring 0
01:35:05:912086: ethernet-input
  frame: flags 0x1, hw-if-index 1, sw-if-index 1
  ARP: 02:dc:5c:30:00:00 -> ff:ff:ff:ff:ff:ff
01:35:05:912104: arp-input
  request, type ethernet/IP4, address size 6/4
  02:dc:5c:30:00:00/10.1.1.2 -> 00:00:00:00:00:00/10.1.1.1
01:35:05:912120: arp-reply
  request, type ethernet/IP4, address size 6/4
  02:dc:5c:30:00:00/10.1.1.2 -> 00:00:00:00:00:00/10.1.1.1
01:35:05:912201: memif11/11-output
  memif11/11 l2_hdr_offset_valid l3_hdr_offset_valid
  ARP: 02:dc:5c:30:00:00 -> 02:dc:5c:30:00:00
  reply, type ethernet/IP4, address size 6/4
  02:dc:5c:30:00:00/10.1.1.1 -> 02:dc:5c:30:00:00/10.1.1.2

Packet 11

01:35:05:912057: memif-input
  memif: hw_if_index 1 next-index 4
    slot: ring 0
01:35:05:912086: ethernet-input
  frame: flags 0x1, hw-if-index 1, sw-if-index 1
  IP4: 02:dc:5c:30:00:00 -> 02:dc:5c:30:00:00
01:35:05:912112: ip4-input
  ICMP: 10.1.1.2 -> 10.1.1.1
    tos 0x00, ttl 64, length 96, checksum 0x2efb
    fragment id 0x359e
  ICMP echo_reply checksum 0x9f5d
01:35:05:912181: ip4-lookup
  fib 0 dpo-idx 8 flow hash: 0x00000000
  ICMP: 10.1.1.2 -> 10.1.1.1
    tos 0x00, ttl 64, length 96, checksum 0x2efb
    fragment id 0x359e
  ICMP echo_reply checksum 0x9f5d
01:35:05:912196: ip4-local
    ICMP: 10.1.1.2 -> 10.1.1.1
      tos 0x00, ttl 64, length 96, checksum 0x2efb
      fragment id 0x359e
    ICMP echo_reply checksum 0x9f5d
01:35:05:912209: ip4-icmp-input
  ICMP: 10.1.1.2 -> 10.1.1.1
    tos 0x00, ttl 64, length 96, checksum 0x2efb
    fragment id 0x359e
  ICMP echo_reply checksum 0x9f5d
01:35:05:912218: ip4-icmp-echo-reply
  ICMP4 echo id 50293 seq 4 send to cli node 620



VPP2:
*******

Packet 14

01:35:02:546138: memif-input
  memif: hw_if_index 1 next-index 4
    slot: ring 0
01:35:02:566721: ethernet-input
  frame: flags 0x1, hw-if-index 1, sw-if-index 1
  IP4: 02:dc:5c:30:00:00 -> 02:dc:5c:30:00:00
01:35:02:566740: ip4-input
  ICMP: 10.1.1.1 -> 10.1.1.2
    tos 0x00, ttl 255, length 96, checksum 0xa598
    fragment id 0x0000
  ICMP echo_request checksum 0xf06f
01:35:02:566751: ip4-lookup
  fib 0 dpo-idx 8 flow hash: 0x00000000
  ICMP: 10.1.1.1 -> 10.1.1.2
    tos 0x00, ttl 255, length 96, checksum 0xa598
    fragment id 0x0000
  ICMP echo_request checksum 0xf06f
01:35:02:566767: ip4-local
    ICMP: 10.1.1.1 -> 10.1.1.2
      tos 0x00, ttl 255, length 96, checksum 0xa598
      fragment id 0x0000
    ICMP echo_request checksum 0xf06f
01:35:02:566774: ip4-icmp-input
  ICMP: 10.1.1.1 -> 10.1.1.2
    tos 0x00, ttl 255, length 96, checksum 0xa598
    fragment id 0x0000
  ICMP echo_request checksum 0xf06f
01:35:02:566778: ip4-icmp-echo-request
  ICMP: 10.1.1.1 -> 10.1.1.2
    tos 0x00, ttl 255, length 96, checksum 0xa598
    fragment id 0x0000
  ICMP echo_request checksum 0xf06f
01:35:02:566784: ip4-load-balance
  fib 0 dpo-idx 8 flow hash: 0x00000000
  ICMP: 10.1.1.2 -> 10.1.1.1
    tos 0x00, ttl 64, length 96, checksum 0x36e4
    fragment id 0x2db5
  ICMP echo_reply checksum 0xf86f
01:35:02:566787: ip4-rewrite
  tx_sw_if_index 1 dpo-idx 8 : ipv4 via 10.1.1.1 memif11/11: mtu:1500
02dc5c30000002dc5c3000000800 flow hash: 0x00000000
  00000000: 02dc5c30000002dc5c3000000800450000602db50000400136e40a0101020a01
  00000020: 01010000f86fc4750001301fb34af627000000010203040506070809
01:35:02:566792: memif11/11-output
  memif11/11 l2_hdr_offset_valid l3_hdr_offset_valid
  IP4: 02:dc:5c:30:00:00 -> 02:dc:5c:30:00:00
  ICMP: 10.1.1.2 -> 10.1.1.1
    tos 0x00, ttl 64, length 96, checksum 0x36e4
    fragment id 0x2db5
  ICMP echo_reply checksum 0xf86f

Packet 15

01:35:02:574138: memif-input
  memif: hw_if_index 1 next-index 4
    slot: ring 0
01:35:02:586875: ethernet-input
  frame: flags 0x1, hw-if-index 1, sw-if-index 1
  ARP: 02:dc:5c:30:00:00 -> 02:dc:5c:30:00:00
01:35:02:586911: arp-input
  reply, type ethernet/IP4, address size 6/4
  02:dc:5c:30:00:00/10.1.1.1 -> 02:dc:5c:30:00:00/10.1.1.2
01:35:02:586921: arp-reply
  reply, type ethernet/IP4, address size 6/4
  02:dc:5c:30:00:00/10.1.1.1 -> 02:dc:5c:30:00:00/10.1.1.2
01:35:02:587026: error-drop
  rx:memif11/11
01:35:02:587037: drop
  null-node: blackholed packets

Packet 16

01:35:02:574138: memif-input
  memif: hw_if_index 2 next-index 4
    slot: ring 0
01:35:02:586911: arp-input
  reply, type ethernet/IP4, address size 6/4
  02:dc:5c:30:00:40/20.1.1.1 -> 02:dc:5c:30:00:40/20.1.1.2
01:35:02:586921: arp-reply
  reply, type ethernet/IP4, address size 6/4
  02:dc:5c:30:00:40/20.1.1.1 -> 02:dc:5c:30:00:40/20.1.1.2
01:35:02:587026: error-drop
  rx:memif222/222
01:35:02:587037: drop
  null-node: blackholed packets

Packet 17

01:35:03:550132: memif-input
  memif: hw_if_index 1 next-index 4
    slot: ring 0
01:35:03:570202: ethernet-input
  frame: flags 0x1, hw-if-index 1, sw-if-index 1
  IP4: 02:dc:5c:30:00:00 -> 02:dc:5c:30:00:00
01:35:03:570212: ip4-input
  ICMP: 10.1.1.1 -> 10.1.1.2
    tos 0x00, ttl 255, length 96, checksum 0xa598
    fragment id 0x0000
  ICMP echo_request checksum 0x2892
01:35:03:570218: ip4-lookup
  fib 0 dpo-idx 8 flow hash: 0x00000000
  ICMP: 10.1.1.1 -> 10.1.1.2
    tos 0x00, ttl 255, length 96, checksum 0xa598
    fragment id 0x0000
  ICMP echo_request checksum 0x2892
01:35:03:570227: ip4-local
    ICMP: 10.1.1.1 -> 10.1.1.2
      tos 0x00, ttl 255, length 96, checksum 0xa598
      fragment id 0x0000
    ICMP echo_request checksum 0x2892
01:35:03:570231: ip4-icmp-input
  ICMP: 10.1.1.1 -> 10.1.1.2
    tos 0x00, ttl 255, length 96, checksum 0xa598
    fragment id 0x0000
  ICMP echo_request checksum 0x2892
01:35:03:570233: ip4-icmp-echo-request
  ICMP: 10.1.1.1 -> 10.1.1.2
    tos 0x00, ttl 255, length 96, checksum 0xa598
    fragment id 0x0000
  ICMP echo_request checksum 0x2892
01:35:03:570237: ip4-load-balance
  fib 0 dpo-idx 8 flow hash: 0x00000000
  ICMP: 10.1.1.2 -> 10.1.1.1
    tos 0x00, ttl 64, length 96, checksum 0xb43f
    fragment id 0xb059
  ICMP echo_reply checksum 0x3092
01:35:03:570239: ip4-rewrite
  tx_sw_if_index 1 dpo-idx 8 : ipv4 via 10.1.1.1 memif11/11: mtu:1500
02dc5c30000002dc5c3000000800 flow hash: 0x00000000
  00000000: 02dc5c30000002dc5c300000080045000060b05900004001b43f0a0101020a01
  00000020: 010100003092c4750002ea6cc0d9f627000000010203040506070809
01:35:03:570242: memif11/11-output
  memif11/11 l2_hdr_offset_valid l3_hdr_offset_valid
  IP4: 02:dc:5c:30:00:00 -> 02:dc:5c:30:00:00
  ICMP: 10.1.1.2 -> 10.1.1.1
    tos 0x00, ttl 64, length 96, checksum 0xb43f
    fragment id 0xb059
  ICMP echo_reply checksum 0x3092

Packet 18

01:35:03:582132: memif-input
  memif: hw_if_index 1 next-index 4
    slot: ring 0
01:35:03:602210: ethernet-input
  frame: flags 0x1, hw-if-index 1, sw-if-index 1
  ARP: 02:dc:5c:30:00:00 -> 02:dc:5c:30:00:00
01:35:03:602229: arp-input
  reply, type ethernet/IP4, address size 6/4
  02:dc:5c:30:00:00/10.1.1.1 -> 02:dc:5c:30:00:00/10.1.1.2
01:35:03:602236: arp-reply
  reply, type ethernet/IP4, address size 6/4
  02:dc:5c:30:00:00/10.1.1.1 -> 02:dc:5c:30:00:00/10.1.1.2
01:35:03:602297: error-drop
  rx:memif11/11
01:35:03:602302: drop
  null-node: blackholed packets

Packet 19

01:35:03:582132: memif-input
  memif: hw_if_index 2 next-index 4
    slot: ring 0
01:35:03:602229: arp-input
  reply, type ethernet/IP4, address size 6/4
  02:dc:5c:30:00:40/20.1.1.1 -> 02:dc:5c:30:00:40/20.1.1.2
01:35:03:602236: arp-reply
  reply, type ethernet/IP4, address size 6/4
  02:dc:5c:30:00:40/20.1.1.1 -> 02:dc:5c:30:00:40/20.1.1.2
01:35:03:602297: error-drop
  rx:memif222/222
01:35:03:602302: drop
  null-node: blackholed packets

Packet 20

01:35:04:559990: memif-input
  memif: hw_if_index 1 next-index 4
    slot: ring 0
01:35:04:560005: ethernet-input
  frame: flags 0x1, hw-if-index 1, sw-if-index 1
  IP4: 02:dc:5c:30:00:00 -> 02:dc:5c:30:00:00
01:35:04:560013: ip4-input
  ICMP: 10.1.1.1 -> 10.1.1.2
    tos 0x00, ttl 255, length 96, checksum 0xa598
    fragment id 0x0000
  ICMP echo_request checksum 0x5e84
01:35:04:560019: ip4-lookup
  fib 0 dpo-idx 8 flow hash: 0x00000000
  ICMP: 10.1.1.1 -> 10.1.1.2
    tos 0x00, ttl 255, length 96, checksum 0xa598
    fragment id 0x0000
  ICMP echo_request checksum 0x5e84
01:35:04:560026: ip4-local
    ICMP: 10.1.1.1 -> 10.1.1.2
      tos 0x00, ttl 255, length 96, checksum 0xa598
      fragment id 0x0000
    ICMP echo_request checksum 0x5e84
01:35:04:560030: ip4-icmp-input
  ICMP: 10.1.1.1 -> 10.1.1.2
    tos 0x00, ttl 255, length 96, checksum 0xa598
    fragment id 0x0000
  ICMP echo_request checksum 0x5e84
01:35:04:560032: ip4-icmp-echo-request
  ICMP: 10.1.1.1 -> 10.1.1.2
    tos 0x00, ttl 255, length 96, checksum 0xa598
    fragment id 0x0000
  ICMP echo_request checksum 0x5e84
01:35:04:560036: ip4-load-balance
  fib 0 dpo-idx 8 flow hash: 0x00000000
  ICMP: 10.1.1.2 -> 10.1.1.1
    tos 0x00, ttl 64, length 96, checksum 0xc71b
    fragment id 0x9d7d
  ICMP echo_reply checksum 0x6684
01:35:04:560037: ip4-rewrite
  tx_sw_if_index 1 dpo-idx 8 : ipv4 via 10.1.1.1 memif11/11: mtu:1500
02dc5c30000002dc5c3000000800 flow hash: 0x00000000
  00000000: 02dc5c30000002dc5c3000000800450000609d7d00004001c71b0a0101020a01
  00000020: 010100006684c4750003a6eacd68f727000000010203040506070809
01:35:04:560040: memif11/11-output
  memif11/11 l2_hdr_offset_valid l3_hdr_offset_valid
  IP4: 02:dc:5c:30:00:00 -> 02:dc:5c:30:00:00
  ICMP: 10.1.1.2 -> 10.1.1.1
    tos 0x00, ttl 64, length 96, checksum 0xc71b
    fragment id 0x9d7d
  ICMP echo_reply checksum 0x6684

Packet 21

01:35:04:618290: memif-input
  memif: hw_if_index 1 next-index 4
    slot: ring 0
01:35:04:618327: ethernet-input
  frame: flags 0x1, hw-if-index 1, sw-if-index 1
  ARP: 02:dc:5c:30:00:00 -> 02:dc:5c:30:00:00
01:35:04:618347: arp-input
  reply, type ethernet/IP4, address size 6/4
  02:dc:5c:30:00:00/10.1.1.1 -> 02:dc:5c:30:00:00/10.1.1.2
01:35:04:618354: arp-reply
  reply, type ethernet/IP4, address size 6/4
  02:dc:5c:30:00:00/10.1.1.1 -> 02:dc:5c:30:00:00/10.1.1.2
01:35:04:618402: error-drop
  rx:memif11/11
01:35:04:618409: drop
  null-node: blackholed packets

Packet 22

01:35:04:618290: memif-input
  memif: hw_if_index 2 next-index 4
    slot: ring 0
01:35:04:618347: arp-input
  reply, type ethernet/IP4, address size 6/4
  02:dc:5c:30:00:40/20.1.1.1 -> 02:dc:5c:30:00:40/20.1.1.2
01:35:04:618354: arp-reply
  reply, type ethernet/IP4, address size 6/4
  02:dc:5c:30:00:40/20.1.1.1 -> 02:dc:5c:30:00:40/20.1.1.2
01:35:04:618402: error-drop
  rx:memif222/222
01:35:04:618409: drop
  null-node: blackholed packets

Packet 23

01:35:05:594891: memif-input
  memif: hw_if_index 1 next-index 4
    slot: ring 0
01:35:05:594915: ethernet-input
  frame: flags 0x1, hw-if-index 1, sw-if-index 1
  IP4: 02:dc:5c:30:00:00 -> 02:dc:5c:30:00:00
01:35:05:594935: ip4-input
  ICMP: 10.1.1.1 -> 10.1.1.2
    tos 0x00, ttl 255, length 96, checksum 0xa598
    fragment id 0x0000
  ICMP echo_request checksum 0x975d
01:35:05:594941: ip4-lookup
  fib 0 dpo-idx 8 flow hash: 0x00000000
  ICMP: 10.1.1.1 -> 10.1.1.2
    tos 0x00, ttl 255, length 96, checksum 0xa598
    fragment id 0x0000
  ICMP echo_request checksum 0x975d
01:35:05:594948: ip4-local
    ICMP: 10.1.1.1 -> 10.1.1.2
      tos 0x00, ttl 255, length 96, checksum 0xa598
      fragment id 0x0000
    ICMP echo_request checksum 0x975d
01:35:05:594953: ip4-icmp-input
  ICMP: 10.1.1.1 -> 10.1.1.2
    tos 0x00, ttl 255, length 96, checksum 0xa598
    fragment id 0x0000
  ICMP echo_request checksum 0x975d
01:35:05:594955: ip4-icmp-echo-request
  ICMP: 10.1.1.1 -> 10.1.1.2
    tos 0x00, ttl 255, length 96, checksum 0xa598
    fragment id 0x0000
  ICMP echo_request checksum 0x975d
01:35:05:594958: ip4-load-balance
  fib 0 dpo-idx 8 flow hash: 0x00000000
  ICMP: 10.1.1.2 -> 10.1.1.1
    tos 0x00, ttl 64, length 96, checksum 0x2efb
    fragment id 0x359e
  ICMP echo_reply checksum 0x9f5d
01:35:05:594960: ip4-rewrite
  tx_sw_if_index 1 dpo-idx 8 : ipv4 via 10.1.1.1 memif11/11: mtu:1500
02dc5c30000002dc5c3000000800 flow hash: 0x00000000
  00000000: 02dc5c30000002dc5c300000080045000060359e000040012efb0a0101020a01
  00000020: 010100009f5dc47500043a7e00fbf727000000010203040506070809
01:35:05:594962: memif11/11-output
  memif11/11 l2_hdr_offset_valid l3_hdr_offset_valid
  IP4: 02:dc:5c:30:00:00 -> 02:dc:5c:30:00:00
  ICMP: 10.1.1.2 -> 10.1.1.1
    tos 0x00, ttl 64, length 96, checksum 0x2efb
    fragment id 0x359e
  ICMP echo_reply checksum 0x9f5d



On Thu, Mar 12, 2020 at 3:49 PM Damjan Marion <dmar...@me.com> wrote:

>
> That’s weird…. Can you capture packet trace on both sides?
>
>
> On 12 Mar 2020, at 11:16, vyshakh krishnan <vysh...@rtbrick.com> wrote:
>
> Hi Damjan,
>
> We don't have any worker threads and memif is in polling mode:
>
> DBGvpp# sh int rx-placement
> Thread 0 (vpp_main):
>   node memif-input:
>     memif11/11 queue 0 (polling)
>     memif222/222 queue 0 (polling)
>
> Thanks
> Vyshakh
>
> On Wed, Mar 11, 2020 at 9:03 PM Damjan Marion <dmar...@me.com> wrote:
>
>>
>> Are you running VPP with worker threads and using interrupt mode in memif?
>>
>> can you capture “sh int rx-placement” on both sides?
>>
>> —
>> Damjan
>>
>> On 11 Mar 2020, at 15:44, vyshakh krishnan <vysh...@rtbrick.com> wrote:
>>
>> Hi All,
>>
>> When we try to ping back to back connected memif interface, its taking
>> around 20 milli secs:
>>
>> vpp1 (10.1.1.1) ---- (10.1.1.2) vpp2
>>
>> DBGvpp#  ping 10.1.1.2
>> 116 bytes from 10.1.1.2: icmp_seq=1 ttl=64 time=15.1229 ms
>> 116 bytes from 10.1.1.2: icmp_seq=2 ttl=64 time=20.1475 ms
>> 116 bytes from 10.1.1.2: icmp_seq=3 ttl=64 time=20.0371 ms
>> 116 bytes from 10.1.1.2: icmp_seq=4 ttl=64 time=14.9237 ms
>> 116 bytes from 10.1.1.2: icmp_seq=5 ttl=64 time=20.1059 ms
>>
>> Statistics: 5 sent, 5 received, 0% packet loss
>>
>> Is it expected to take 20 msecs for a direct ping?
>>
>> Thanks
>> Vyshakh
>>
>>
>>
>>
>> 
>
>
>
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