TFTP Block-size Configuration
 
  ExtremeXOS supports the TFTP client block-size option configuration based on
   RFC 2348, which can range from 8 octets to 65000 octets. The block-size refers to data octets and
   does not include TFTP header. This feature added the user configuration option for data
    bock-size:
    - in the generic commands that are used for downloading/uploading image/configuration/log/core
     file etc.
- ranging from 24 bytes to 65000 bytes, taking into consideration the local/remote file name
     size and the current busy box TFTP client support limits.
- to support larger TFTP data packets exceeding normal MTU especially on a front-panel
          port in case of in-band management, enable jumbo frames on that port. Please refer "Jumbo
          Frames" for the usage and its functional restrictions that affect TFTP data packet
          transfers.
 If you do not specify block-size, the default is 1400 bytes.