2 Replies Latest reply on Oct 2, 2019 10:53 AM by rajala

    Jumbo pings between transport node vtep and edge vm vtep failing

    rajala Lurker

      Setup

      I have two transport nodes and one edge VM.  The transport nodes vteps are 172.16.1.10 and 172.16.1.11 and The edge node vm vtep is 172.16.1.15.

       

      Issue

       

      Jumbo pings between transport nodes vteps works, whereas between transport node and edge vm fails.

       

      Jumbo ping dump between transport nodes vteps:-

       

      [root@srv104-26a:~] vmkping ++netstack=vxlan 172.16.1.10 -c 5 -s 9000

      PING 172.16.1.10 (172.16.1.10): 9000 data bytes

      9008 bytes from 172.16.1.10: icmp_seq=0 ttl=64 time=0.993 ms

      9008 bytes from 172.16.1.10: icmp_seq=1 ttl=64 time=0.886 ms

      9008 bytes from 172.16.1.10: icmp_seq=2 ttl=64 time=0.932 ms

      9008 bytes from 172.16.1.10: icmp_seq=3 ttl=64 time=0.872 ms

      9008 bytes from 172.16.1.10: icmp_seq=4 ttl=64 time=0.841 ms

       

       

      --- 172.16.1.10 ping statistics ---

      5 packets transmitted, 5 packets received, 0% packet loss

      round-trip min/avg/max = 0.841/0.905/0.993 ms

       

      Jumbo ping dumps between transport node vtep and edge vm vtep

       

      [root@srv104-26a:~] vmkping ++netstack=vxlan 172.16.1.15 -c 5 -s 9000

      PING 172.16.1.15 (172.16.1.15): 9000 data bytes

       

       

      --- 172.16.1.15 ping statistics ---

      5 packets transmitted, 0 packets received, 100% packet loss

       

      Regular ping dumps between transport node vtep and edge vm vtep

      [root@srv104-26a:~] vmkping ++netstack=vxlan 172.16.1.15 -c 5

      PING 172.16.1.15 (172.16.1.15): 56 data bytes

      64 bytes from 172.16.1.15: icmp_seq=0 ttl=64 time=0.734 ms

      64 bytes from 172.16.1.15: icmp_seq=1 ttl=64 time=0.845 ms

      64 bytes from 172.16.1.15: icmp_seq=2 ttl=64 time=0.851 ms

      64 bytes from 172.16.1.15: icmp_seq=3 ttl=64 time=0.644 ms

      64 bytes from 172.16.1.15: icmp_seq=4 ttl=64 time=0.689 ms

       

       

      --- 172.16.1.15 ping statistics ---

      5 packets transmitted, 5 packets received, 0% packet loss

      round-trip min/avg/max = 0.644/0.753/0.851 ms

       

      Probable Root Cause

       

      I observed Dropped No Memory counters incremented during jumbo frame pings. Any inputs in resolving this issue would be of great help.

       

      hqnsxtedge03(vrf)> get stats

      Logical Router

      UUID        : 736a80e3-23f6-5a2d-81d6-bbefb2786666

      VRF         : 0

      LR-ID       : 0

      Name        :

      Type        : TUNNEL

      Statistics

          Dropped No Memory             : 115

          Dropped No Route              : 0

       

       

      hqnsxtedge03(vrf)> get stats

      Logical Router

      UUID        : 736a80e3-23f6-5a2d-81d6-bbefb2786666

      VRF         : 0

      LR-ID       : 0

      Name        :

      Type        : TUNNEL

      Statistics

          Dropped No Memory             : 118

          Dropped No Route              : 0

       

       

      hqnsxtedge03(vrf)> get stats

      Logical Router

      UUID        : 736a80e3-23f6-5a2d-81d6-bbefb2786666

      VRF         : 0

      LR-ID       : 0

      Name        :

      Type        : TUNNEL

      Statistics

          Dropped No Memory             : 119

          Dropped No Route              : 0

       

      Thanks

      Mahi