Performance Issues and Slowness due to Jumbo Frames


SDWAN_Diagnostics.log file will display Jumbo Frames as follows:

Command: drop_counts
************************************************************************************************************************
  Index      Count                                File Name                                                Function Name  Line #  Reason text
--------------------------------------------------------------------------------------------------------------------------------------------
      1         12          forward/interfaces/interfaces.c                                             do_ip_forwarding    5979  This packet matches a DISCARD route
      2         77           forward/virtual_path_service/path.c                                               store_reliable    4161  Free reliable packets on dead Virtual_Path
      3         10         forward/integration/wan_WAN to LAN.c                                           wan_WAN to LAN_Virtual_Path     561  TRP control packets received outside acceptable time sent range
      4      12214          forward/interfaces/interfaces.c                        do_receive_frame_processing_on_packet    4136  Received an IPv4 packet from an ethernet interface that failed IPv4 header validation
      5     180989          forward/interfaces/interfaces.c                                                  eth_receive    7420  Received a packet from the ethernet port that was too large
      6        445          forward/interfaces/interfaces.c                                    do_ip_host_sns_processing    3287  Received a user packet on an untrusted interface for local service
      7        501        forward/integration/wan_LAN to WAN.c                                wan_LAN to WAN_enqueue_scheduler     390  Packet dropped due to RED
      8         18          forward/interfaces/interfaces.c                                               do_ttl_expired    5117  The IPv4 TTL count was exceeded
      9         11    forward/virtual_path_service/WAN to LAN_flow.c                                   egf_Virtual_Path_process_packet    3243  duplicate standalone TCP ack packet
     10          1    forward/virtual_path_service/WAN to LAN_flow.c                                   egf_Virtual_Path_process_packet    3791  duplicate packet
     11          6         forward/integration/wan_WAN to LAN.c                                           wan_WAN to LAN_Virtual_Path     636  The WAN WAN to LAN classifier marked this as IGNORE
     12        102           forward/virtual_path_service/path.c                                          retransmit_reliable    4605  The path queue cost was greater than 400ms for a retransmitted packet.

 

Problem Cause